I repaired many LCs. All of them with leaky caps and absolutly dead. After recap all where working fine. But i never managed to get a dead power supply working ^^. I love your content, keep up your great work and best regards from Germany.
Thanks for showing that pizza box Mac so much love in a mail call video! An unexpected treat for sure. My first home computer as a child was a Performa 400 (rebranded LC II) and I have a huge amount of affection for that Mac form factor. I hope you revisit the repair in a future video.
Apple was in a let's-make-dozen-models-based-on-the-same-hardware mode from late 80s to late 90s; they changed the name (performa, LC, server, etc) but were really variations on 3 or 4 base models, that was one of things Jobs axed when he took charge back in Apple, along with clone licensing for MacOS
I had an LC III back in middle and high school. My school was throwing it out, so I literally brought it home on the bus with me. I upgraded the hard drive, maxed out the RAM and had a good time with it for many years. Then it died on me. I'd like to get another vintage Mac, but space is at a premium.
Oh my goodness thank you for wearing that MECC shirt! I recognized the state of Minnesota so I was curious and went to the site. To my surprise, it was filled with all the Apple II stuff I did in grade school as late as ‘99! We were the last class to use those machines before the school was combined and updated to those funky color mac’s, I think the G3’s. Brings back a ton of memories I almost forgot about like playing number munchers and working those old machines.
Ah Søren Lund. Makes you proud to be Danish. I remember a disk I got back in the 90s with a bunch of his tracks on it. I listened to them often, and later I met the guy aswell. Cool to get this throwback :)
I love the LC II! I'm really nostalgic for it because it was the first color Macintosh that I ever saw-I was in 8th grade and they used LC IIs in the computer lab to teach HyperCard.
@23:30 Left to the switching transformer, there's opto for isolated feedback. Check which voltage line is monitored and put some small load on it - some SPSes won't turn on if their 'primary' output line is not loaded (as it cannot regulate it's pure capacitive load in such case).
The LC pizza boxes won’t always show video without the lithium battery installed. There’s a trick though: turn it on, then flip the switch off and on again and it will boot again, this time outputting video.
The LC III was actually a really good Mac at the time. (The earlier LCs not so much.) An LC III was my desktop Mac at work from the mid-'90s until I moved to a Power Mac, and I had no complaints.
Some of the differences you're hearing are due to SID filter differences. They could never produce them consistently, some of them are muffled, some are wide open. It's an analog filter and was made for a computer. So won't be very accurate. Many musicians didn't bother using it for that reason.
I’d love to see some quantitative measurements (instead of qualitative) of those SIDs using an oscilloscope. Comparing waveforms on that test program would be super interesting.
I've put ROMs backwards in machines before, so they've got too hot to touch, and they've worked fine afterwards. Have you tried reading the LC's original ROMs out using the programmer, to see if they still read?
I would like to start by saying that over the years i have repaired a large number of these machines and have also found ROMs in the wrong position in the sockets (possibly even some i have installed myself, but only possibly) that have worked fine when put back correctly. I would suspect the machine is quite likly still working (to a degree) but it will need recapping (Sound is oftern lost when the caps degrade and weep out, which they do.), how ever i suspect the lack of image is a result of a subject brought up in another recent video regarding systems not turning on when the battery is not present. Well this model is one of those where it is infact the case, if the battery is not present or has gone flat it will either not start at all, or just not output any video signal. You can test if this is the problem by simply turning the machine on for a few seconds then swithing it off and back on again quickly, as long as the caps on the board arn't completly dead then the machine should be able to hold enough power for it to come up before the PRAM looses its memory again.
@@smeezekitty My favourite incident with a ROM was dropping an AMX Super Art ROM for the BBC Micro while I was riding a bicycle at 15mph, sometime in the 90s. All the pins were bent or broken and there was a big scuff mark on it. I straightened the remaining pins, soldered replacements to the stubs of the broken ones, and it worked fine. I still have it to this day.
Really enjoyed this one, lots of fun at the bench. Looking forward to the conclusion on the LC2/3. Nice to see the 64C short-board make an appearance too :D
I would like to start by saying that over the years i have repaired a large number of these LCII, LCIII and Preforma machines and have also found ROMs in the wrong position in the sockets (possibly even some i have installed myself, but only possibly) that have worked fine when put back correctly. I would suspect the machine is quite likly still working (to a degree) but it will need recapping (Sound is oftern lost when the caps degrade and weep out, which they do.), how ever i suspect the lack of image is a result of a subject brought up in another recent video regarding systems not turning on when the battery is not present. Well this model is one of those where it is infact the case, if the battery is not present or has gone flat it will either not start at all, or just not output any video signal. You can test if this is the problem by simply turning the machine on for a few seconds then swithing it off and back on again quickly, as long as the caps on the board arn't completly dead then the machine should be able to hold enough power for it to come up before the PRAM looses its memory again.
just confirming that i am subscribed with notifications on and I don't get notifications for your channel. I do for other channels but it's when youtube feels like it.
I am probably completely wrong but I seem to get notifications of "Live" events "pop-up" when I am online on the web app and I get a note under the Bell Icon that a video has arrived to watch but no "notifications" on any mobile devices (I would have those turned off anyways). In this way it does seem to still "work" Great video. As a musician I can confirm that I could hear the (probably high pass) filter was broken (and maybe both) immediately upon you playing the second version of the track with waves - that did work. It was manifestly obvious in the tones. Have a nice day
I think this may have been the version of Apple computer used in the computer lab in my high school. At least it looked like this (physically). I'm really not sure, but they looked like this. I graduated in 1993. Boy this brings back some memories; especially the After Dark screen saver - lawn mower dude, flying toasters, and the asteroids like Lunatic Fringe game. This is the computer that introduced me to Sim City.
My senior year in high school I was on the yearbook staff, and they had just barely installed brand new Macintosh LC 520s in our lab. The two work horses that the co-editors used were Quadras with large monitors. It was the first time I had ever used a color Mac for anything.
The top bell icon makes new videos show up in the in-app notifications: the red number. For you they are probably lost among the comment notifications but for us consumers it’s useful.
I get all notifications for your videos. With that Mac - definitely investigate the clock and reset circuits. Also not sure those rooms are programmed right still.
Not sure what the issue is with notifications. I ticked subscribe and selected all and I always get every notification of new videos and have never had one missed. I never trust chips from AliExpress. I am more surprised when they work 🙂
15:13 have you tried removing the video ram and putting back the other ram where it was? Or the system can show signs of live without that ram board? Could you read the original ROM chips? If you can read them in some device maybe they are not dead. Don't throw them away just yet in the dead parts bin. About 2 years ago I was fixing a PS3, it had to be reflown (the usual) but some forum entries said maybe the potentiomenter needs to be fiddled with in the PSU. I saw a huge, like 400V capacitior and I was curious how much current it's holding at the moment, minutes after I unplugged, shorted the leads with an insulated screw driver and I jumped at how loud it was, it was like a firecracker blew up in the room next to me. At the end it wasn't the PSU's fault and I could resurrect the PS3 but it died not long ago again (stupid ball soldering). I have a PlayStation 1 and the PSU is not working, it has all sorts of stuff on the board, it has some weird patina colored leakage and some rust. I'll try to clean it up and find which component(s) died, the board itself is really dark around a transistor, maybe it's fried.
I watched this over lunch at 1.5x speed so I may have missed if you mentioned it but I have an LCIII (the badge is actually a Performa 475 but same thing under the hood) and it either only boots or only displays video if the battery is installed. So don't forget to pop a new battery in at some point.
I seem to get all the RUclips notifications for the channels I have set. Side note, I can believe it's been 3 years since one of your LED bulb videos popped up in my recommended video list. I'm sure it's because I was watching the entire back catalog of Big Clive videos.
On the LC PSU (TDK and Aztec) the cap failure requires that you replace ALL the caps on the low voltage side. But there is a problem, not only do you need the correct farad and voltage of the cap, you need it to be the same physical size or you will have issues closing the PSU case. Once all the caps on the low voltage side are replaced, you fixed the PSU.
The 12" RGB 512x384 resolution screen was just the lowest cost color monitor for the LC series. They always worked with 640x480 grayscale and color displays too, and if I recall correctly, 640x870 portrait displays too. Later models supported a much wider range, including higher resolutions ("Apple" 21" resolutions 1152x870@70Hz, SVGA 640x480@60Hz, 800x600@56Hz etc).
Actually the "ode to c64" tune I did, is supposed to distort a bit. The mild type that you can get when using filter on more than one voice on the 6581 chips - in my case I have used a 6581R4. :) BUT as far as I remember, it doesn´t distort that much on my 6581 chips. :)
I like how companies known for manufacturing other products manucaturer other things like that TDK power supply. And i saw Techmoan's Mac had a Cannon cooling fan.
Adrian, I’d love a video of “pushing SID to its limits.” How many can I stuff in a 64? Using a 2x cartridge doubler, 2 messiah, 2 - C64’s and midi, in, out and thru, how many can you REALLY run. I have a decent collection of both kinds, and dont forget the Swinsid and SID2SID cartridge, I acquired a commodore MK-10 midi keyboard and I’d like to push it to the extremes. If I had the ability I’d make an 88 SID MIDI player using this rare Commodore music keyboard I snatched up. But I’d be happy with just a comparison video of every version of the SID. I think this is the most under-rated chip made in the 80’s.
Nice video, as always! By the way, I just wanted you to know that, at least for me, notifications work just fine when I tap the bell icon on my phone upon subscribing to a channel. Same goes for the site. Just make sure to always enable ALL notifications. I don't even know why the other setting has to be there, to be honest.
I would consider looking for the schematics for that power supply, and build a new one, but as I have described before, that what only a consideration.
I think there was a Performa 460 in my kindergarten class in 2002, and there where a few other models i can't remember aside the main pcs the school had, Dell Optiplex GX110 desktops.
Mousetrap Monday had a great explanation of the notification issue... Checking to see if I can link it here... Can't find it in my history, bit he had a great q&a segment that describes the use of notification settings... I have run into similar issue with youtube notification not working, and I think it boils down to enabling it per device... I will have to do more research, but he had a great explanation of how he figured it out.
You inspired me to look up those two demo songs. It's amazing hearing sounds I normally associate with the Sega Genesis coming out of a computer that predates the Nintendo. It really goes to show how even some of the best professional composers for 64 games didn't take full advantage of its capabilities.
Really love that little Philips CRT! Absolutely perfect to have on your bench without taking up too much room (which even 14" sets do). What diagonal screen size is it?
Thanks for the exciting video, Adrian :) Oh and what did I write a month ago? Use a power supply with current limiting. You have one, don't you? (Ouch :)) The Conan (The Barbarian: P) method just breaks more than necessary ... and makes me sad.
@Adrian's Digital Basement Thanks for another enjoyable and interesting video. And I apologise for suggesting something that most likely appears stupid, but if You don't get ANY YT-notifications at all on Your "phone". It just possibly might be that You have set one of the (in my opinion) plethora of different ways that You can (knowingly and by mistake) disable notifications from being displayed on Your phone... I know that I have managed to do it unintentionally more than once ;) ... Just a thought. Best regards.
Good video! In the couple of LCIIs I’ve repaired they were dead like that because it required the battery installed. Not sure if that applies to the LCIII/Performa boards. Both of them also had PSU issues (All ELNA “Long-Life” secondary side failed. Non “Long-Life” were all ok.)
Man, we had stacks of LCII's and LCIII's that were getting phased out in favor of G3's and iMac's back in our school in 2000. They had a massive pile of at least 100 these things in our media center that went to the district computer grave yard never to be heard from again...
That's interesting about the ROMS. Amiga's with twin Kickstart ROMS are the same. You install them moved down a pin with extra socket holes available, yup. AND. If you install them wrong, swapped. They cook. However they tend to still work if you catch it quick. Ask me how I know. :)
A Turbo Chameleon 64! I have one of those. Primary reason I had for buying it was for the VGA output, but it's very useful. I've also played with it in standalone mode, where it functions like a MiSTer.
Makes for a great repair video! I myself am stuck with a dead LC II, which definitely needs recapping. Watching repair videos like Adrian makes gives me motivation to work on them. Even if it is an entry level machine...
I actually find fiberglass pencils take a long time to remove solder mask and the fibers break off and get everywhere. My preferred tool for removing solder mask is a sewing needle--the largest size you can get, hold it firmly and use a side to side action rather than pushing it. You can also use the point of a pair of tweezers if they're hard enough or don't have too fine of a point to begin with.
Killing incorrectly installed components with an overpowered PSU... been there, done that. (it was an EPROM. Beeping it through showed the +5V pin had no more continuity. I thought "what do I have to lose", popped the window and tried inserting a wire to hook up to the what was left of the wire bond (it worked like a fuse), but either that was a too small scale to work with or the chip had died too). My aunt's LCII (an actual LCII) also didn't work, black screen, weird noises from the speaker. I once got a white screen, but it locked up before anything else showed up. I ended up replacing the capacitors, which got rid of the noises, but still black screen. Then I wanted to remove the PSU to look at the caps inside and then I saw another leaked electrolytic hiding under the cable to the PSU. Replaced it and pling - the LCII booted right up. And I just fixed a Roland XP-50 keyboard. When I looked at the mainboard, I got instant Adrian Black Leaked Macintosh Electrolytics flashbacks. Thanks for the hint with just twisting them off. I only damaged one pad. Nowadays, most SID files are written for the 8580 because they all sound more or less the same, while with the 6581, if you have 5 of them, you'll get 4 different sounding versions of each song if the song uses filters. My guess at the fault is either the ring modulator is bad or there is a problem synchronizing the oscillators. Or the resonance.
My main computer at the office I work at back in the 90’s through early 2000’s was an LCIII. It was ok. A co-worker of mine one time watered a hanging plant above the monitor I had with it. It dripped into the monitor and into the computer. When the tech came to replace the motherboard they noticed the water stain and I said I had no idea what happened! LOL. It was utilized until we got a PowerPC clone Radius.
That little capacitor in the middle; that looks similar to the one in a Apple IIgs power supply that died. I replaced it and all was well. I was wondering what it did.
12:20 - nope - the LC & LCII only had a 16-bit data path and a maximum of 10Mb support RAM. The good news is that it has 256Mb on board VRAM, so you don't need to populate the socket to get a video signal.
ick, that things a wreck. I have a working lc 2 in the basement. I think it's currently holding up the Performa, which is holding up the mac se and the mac cube.
Notifications work fine for me without having the bell clicked, but then again I don't think I'm subscribed to that many channels. Side note, do those big chip flashers work with flashrom? The only programmer I have is a CH341A that I use to resurrect machines from bios corruption, works pretty well.
I know this might not be the problem... Back from 93-98 I used to work on the olders Mac in College. Of the No screen or Boot problems also kicked back the need for a New battery or have one in.
I've commented on this before, sorry I sound like a broken record. My little collection has LC II, LC III & Q605 boards and each of these will not post without a PRAM battery installed.
There's a trick to make it work: turn it off and back on again. Really! Turn the power on for a 10-count, then off for a 5-count, then back on and the Mac should put video out. I think it's the video system in the pizza box LC derived machines not initializing without the priming charge from a good PRAM battery.
The bell notification thing is weird. I get notifications for things that I didn't click, and when I do get them, they don't come until days later, but for other channels where I did click it, it comes right away.
Oddly the notifications seem to work for me at the moment. But it seemed like they were totally broken for over a year for me at one point. So I haven't really gone back to using the notifications page yet.
Could the sid just be different and not bad? Maybe that's why the changed manufacturing? Would love to see more comparisons of different sid chips as you find them
Apple had many Mac's with the moniker LC (12 in total IIRC), but only 5 "pizza box" designs. The LC, II, III, III+ & 475. The where very similar in fact so much so that Apple offered an upgrade path from the LCIII to the LC475 - it consisted of a new motherboard and top lid. Worth noting that the LCII isn't really an upgrade over the LC (I consider it a downgrade, despite the fact that the LCII has 4Mb on board over the LC @ 2Mb, it also had a slight tweak to the video output to improve multisync monitor support, but my main gripe is the fact that Apple decided to remove the second floppy drive port!). I still have at least 60 of the various LC iterations as I used them in combination with Thursbys DAVE to share over 4Gb of data back in the day! Oh I must get around to creating a few videos!
![I.N "HALLUCINATION" | [Stray Kids : SKZ-PLAYER]](http://i.ytimg.com/vi/n5B5q1Hwt_U/mqdefault.jpg)
![Noob To Max With DRAGON REWORK In Blox Fruits [FULL MOVIE]](http://i.ytimg.com/vi/LnBMOinoOvA/mqdefault.jpg)
I repaired many LCs. All of them with leaky caps and absolutly dead. After recap all where working fine. But i never managed to get a dead power supply working ^^. I love your content, keep up your great work and best regards from Germany.
I am loving the comments put in during editing. It really makes me realize that backseat troubleshooting is easier even when it's yourself!
Chip from Poland, tested in machine bought in Slovakia, and testing done in USA. World is a global village indeed.
Thanks for showing that pizza box Mac so much love in a mail call video! An unexpected treat for sure. My first home computer as a child was a Performa 400 (rebranded LC II) and I have a huge amount of affection for that Mac form factor. I hope you revisit the repair in a future video.
So many Mac’s I never knew existed.
For what it’s worth, notifications work perfectly for me.
Apple was in a let's-make-dozen-models-based-on-the-same-hardware mode from late 80s to late 90s; they changed the name (performa, LC, server, etc) but were really variations on 3 or 4 base models, that was one of things Jobs axed when he took charge back in Apple, along with clone licensing for MacOS
Fun fact, this machine was literally on sale for 3 weeks before being discontinued. October 18th 1993, to November 1st 1993.
haha, this weeks mini (deep troubleshoot, disassembly, reprogramming, explain everything) mail call, i love it :D
I actually have an LC III, and it’s one of the best pizza box LCs, because they didn’t limit the 030 to a 16-bit data path like the prior LCs
Ditto! My LC III is a wonderful little box.
I had an LC III back in middle and high school. My school was throwing it out, so I literally brought it home on the bus with me. I upgraded the hard drive, maxed out the RAM and had a good time with it for many years. Then it died on me. I'd like to get another vintage Mac, but space is at a premium.
I had a Mac 6100 pizza box. A shame it fell prey to a leaking pram battery....
Oh my goodness thank you for wearing that MECC shirt! I recognized the state of Minnesota so I was curious and went to the site. To my surprise, it was filled with all the Apple II stuff I did in grade school as late as ‘99! We were the last class to use those machines before the school was combined and updated to those funky color mac’s, I think the G3’s. Brings back a ton of memories I almost forgot about like playing number munchers and working those old machines.
Ah Søren Lund. Makes you proud to be Danish. I remember a disk I got back in the 90s with a bunch of his tracks on it. I listened to them often, and later I met the guy aswell. Cool to get this throwback :)
I love the LC II! I'm really nostalgic for it because it was the first color Macintosh that I ever saw-I was in 8th grade and they used LC IIs in the computer lab to teach HyperCard.
@23:30 Left to the switching transformer, there's opto for isolated feedback. Check which voltage line is monitored and put some small load on it - some SPSes won't turn on if their 'primary' output line is not loaded (as it cannot regulate it's pure capacitive load in such case).
Ahh yes, the Mac LC line, I saw a lot of these in my school system back in the 90's, right next to low cost Dell, HP, and Gateway machines.
Really my favourite retro channel, this Digital Basement!!! Cheers, M
The new workbench camera angle is great, Adrian. Manfrotto make quality camera mounts.
I hit the Bell and select All, and I get all notifications. Sometimes I notice they are delayed compared to the actual channel, but it's not too bad.
Interesting SID-Chip comparison. I didn't think there would be such differences in details.
Greetings, Doc64!
The LC pizza boxes won’t always show video without the lithium battery installed. There’s a trick though: turn it on, then flip the switch off and on again and it will boot again, this time outputting video.
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I always do get notifications from your channel, don't seem to have issues with that. Keep up the great work.
The out of focus segments were fine, I just watched them in 144p and pretended it was 2006.
I’m still pretending I don’t need glasses so I didn’t even notice them at 1080p.
Ironically, youtube was 240p *only* in 2006, so you didn't have 144p.
Notifications definitely work for me. That's how I knew this video was posted.
Same, but I watch on the web. I don't get emails like I used to though. I think they removed that on purpose.
I'm on android so maybe that's the difference.
The LC III was actually a really good Mac at the time. (The earlier LCs not so much.) An LC III was my desktop Mac at work from the mid-'90s until I moved to a Power Mac, and I had no complaints.
Some of the differences you're hearing are due to SID filter differences. They could never produce them consistently, some of them are muffled, some are wide open. It's an analog filter and was made for a computer. So won't be very accurate. Many musicians didn't bother using it for that reason.
I’d love to see some quantitative measurements (instead of qualitative) of those SIDs using an oscilloscope. Comparing waveforms on that test program would be super interesting.
The Aliexpress one sounds like it's got a dead noise generator and possibly a broken VCA.
@@Stoney3K Oh that could be. the VCA could be shorted and just overloading the preamp with a high peak signal.
I've put ROMs backwards in machines before, so they've got too hot to touch, and they've worked fine afterwards. Have you tried reading the LC's original ROMs out using the programmer, to see if they still read?
I would like to start by saying that over the years i have repaired a large number of these machines and have also found ROMs in the wrong position in the sockets (possibly even some i have installed myself, but only possibly) that have worked fine when put back correctly.
I would suspect the machine is quite likly still working (to a degree) but it will need recapping (Sound is oftern lost when the caps degrade and weep out, which they do.), how ever i suspect the lack of image is a result of a subject brought up in another recent video regarding systems not turning on when the battery is not present. Well this model is one of those where it is infact the case, if the battery is not present or has gone flat it will either not start at all, or just not output any video signal. You can test if this is the problem by simply turning the machine on for a few seconds then swithing it off and back on again quickly, as long as the caps on the board arn't completly dead then the machine should be able to hold enough power for it to come up before the PRAM looses its memory again.
Mask roms are so simple, they should be almost impossible to kill
@@smeezekitty My favourite incident with a ROM was dropping an AMX Super Art ROM for the BBC Micro while I was riding a bicycle at 15mph, sometime in the 90s. All the pins were bent or broken and there was a big scuff mark on it. I straightened the remaining pins, soldered replacements to the stubs of the broken ones, and it worked fine. I still have it to this day.
Really enjoyed this one, lots of fun at the bench. Looking forward to the conclusion on the LC2/3. Nice to see the 64C short-board make an appearance too :D
Just about to start an LC475 full Refurb and loving these latest Mac videos - the RF panel ground plane was fascinating!
Love your channel! Keep up the good work! Warm greetings from Bulgaria!
The LCIII I remember very fondly because I got one from my aunt in the 90s. It was my first color Mac.
I would like to start by saying that over the years i have repaired a large number of these LCII, LCIII and Preforma machines and have also found ROMs in the wrong position in the sockets (possibly even some i have installed myself, but only possibly) that have worked fine when put back correctly.
I would suspect the machine is quite likly still working (to a degree) but it will need recapping (Sound is oftern lost when the caps degrade and weep out, which they do.), how ever i suspect the lack of image is a result of a subject brought up in another recent video regarding systems not turning on when the battery is not present. Well this model is one of those where it is infact the case, if the battery is not present or has gone flat it will either not start at all, or just not output any video signal. You can test if this is the problem by simply turning the machine on for a few seconds then swithing it off and back on again quickly, as long as the caps on the board arn't completly dead then the machine should be able to hold enough power for it to come up before the PRAM looses its memory again.
I want MORE out-of-focus segments because then I can look at the stuff behind you which is COOL.
just confirming that i am subscribed with notifications on and I don't get notifications for your channel. I do for other channels but it's when youtube feels like it.
I am probably completely wrong but I seem to get notifications of "Live" events "pop-up" when I am online on the web app and I get a note under the Bell Icon that a video has arrived to watch but no "notifications" on any mobile devices (I would have those turned off anyways). In this way it does seem to still "work"
Great video. As a musician I can confirm that I could hear the (probably high pass) filter was broken (and maybe both) immediately upon you playing the second version of the track with waves - that did work. It was manifestly obvious in the tones.
Have a nice day
Thanks for the video! I am looking forward to a future video on the Chameleon cartridge.
I think this may have been the version of Apple computer used in the computer lab in my high school. At least it looked like this (physically). I'm really not sure, but they looked like this. I graduated in 1993. Boy this brings back some memories; especially the After Dark screen saver - lawn mower dude, flying toasters, and the asteroids like Lunatic Fringe game. This is the computer that introduced me to Sim City.
My senior year in high school I was on the yearbook staff, and they had just barely installed brand new Macintosh LC 520s in our lab. The two work horses that the co-editors used were Quadras with large monitors. It was the first time I had ever used a color Mac for anything.
The polish Sid sounds awesome a real kettle drum sound
0,5% dislikes on a video, who beats that.. great work, you cracked the code
The top bell icon makes new videos show up in the in-app notifications: the red number. For you they are probably lost among the comment notifications but for us consumers it’s useful.
I get all notifications for your videos.
With that Mac - definitely investigate the clock and reset circuits. Also not sure those rooms are programmed right still.
Loved those Macs back in the day.
Not sure what the issue is with notifications. I ticked subscribe and selected all and I always get every notification of new videos and have never had one missed. I never trust chips from AliExpress. I am more surprised when they work 🙂
15:13 have you tried removing the video ram and putting back the other ram where it was? Or the system can show signs of live without that ram board? Could you read the original ROM chips? If you can read them in some device maybe they are not dead. Don't throw them away just yet in the dead parts bin.
About 2 years ago I was fixing a PS3, it had to be reflown (the usual) but some forum entries said maybe the potentiomenter needs to be fiddled with in the PSU. I saw a huge, like 400V capacitior and I was curious how much current it's holding at the moment, minutes after I unplugged, shorted the leads with an insulated screw driver and I jumped at how loud it was, it was like a firecracker blew up in the room next to me. At the end it wasn't the PSU's fault and I could resurrect the PS3 but it died not long ago again (stupid ball soldering).
I have a PlayStation 1 and the PSU is not working, it has all sorts of stuff on the board, it has some weird patina colored leakage and some rust. I'll try to clean it up and find which component(s) died, the board itself is really dark around a transistor, maybe it's fried.
I'm looking forward to the LCII troubleshooting series!
I watched this over lunch at 1.5x speed so I may have missed if you mentioned it but I have an LCIII (the badge is actually a Performa 475 but same thing under the hood) and it either only boots or only displays video if the battery is installed. So don't forget to pop a new battery in at some point.
I seem to get all the RUclips notifications for the channels I have set.
Side note, I can believe it's been 3 years since one of your LED bulb videos popped up in my recommended video list. I'm sure it's because I was watching the entire back catalog of Big Clive videos.
As always, the best Electronic Home schooling for me 😁
On the LC PSU (TDK and Aztec) the cap failure requires that you replace ALL the caps on the low voltage side. But there is a problem, not only do you need the correct farad and voltage of the cap, you need it to be the same physical size or you will have issues closing the PSU case.
Once all the caps on the low voltage side are replaced, you fixed the PSU.
After the day I’ve had I need this video!
I use the Manfrotto mounts as well. Four tripods and one over-bench view.
Now you've done it, I'll be betting over the next couple of months, you'll be inundated with short-board C64cs... :P
The 12" RGB 512x384 resolution screen was just the lowest cost color monitor for the LC series. They always worked with 640x480 grayscale and color displays too, and if I recall correctly, 640x870 portrait displays too. Later models supported a much wider range, including higher resolutions ("Apple" 21" resolutions 1152x870@70Hz, SVGA 640x480@60Hz, 800x600@56Hz etc).
Nice camera mounts Adrian, looking good.
Actually the "ode to c64" tune I did, is supposed to distort a bit. The mild type that you can get when using filter on more than one voice on the 6581 chips - in my case I have used a 6581R4. :) BUT as far as I remember, it doesn´t distort that much on my 6581 chips. :)
I loved it. I actually have a complete LC II that i still use
You should have a little laminated checklist next the camera mounts in each shot location. Reminding you to focus and change other settings .
Thank JEDEC (a memory company association) for standardizing ROM pinouts.
I like how companies known for manufacturing other products manucaturer other things like that TDK power supply. And i saw Techmoan's Mac had a Cannon cooling fan.
Adrian, I’d love a video of “pushing SID to its limits.”
How many can I stuff in a 64?
Using a 2x cartridge doubler, 2 messiah, 2 - C64’s and midi, in, out and thru, how many can you REALLY run.
I have a decent collection of both kinds, and dont forget the Swinsid and SID2SID cartridge, I acquired a commodore MK-10 midi keyboard and I’d like to push it to the extremes.
If I had the ability I’d make an 88 SID MIDI player using this rare Commodore music keyboard I snatched up.
But I’d be happy with just a comparison video of every version of the SID.
I think this is the most under-rated chip made in the 80’s.
Another great mail call. thanks
Told you you'd be happy with those quick releases 😎
Nice video, as always! By the way, I just wanted you to know that, at least for me, notifications work just fine when I tap the bell icon on my phone upon subscribing to a channel. Same goes for the site. Just make sure to always enable ALL notifications. I don't even know why the other setting has to be there, to be honest.
I would consider looking for the schematics for that power supply, and build a new one, but as I have described before, that what only a consideration.
I think there was a Performa 460 in my kindergarten class in 2002, and there where a few other models i can't remember aside the main pcs the school had, Dell Optiplex GX110 desktops.
Hocus pocus, no worries about focus! We're here for the content! :) Say hi to Rami please! Still loving the Mexican Tang as well as Mexican Klass. :)
Check the capacitors inside that Antec Truepower for leakage.
Mousetrap Monday had a great explanation of the notification issue... Checking to see if I can link it here... Can't find it in my history, bit he had a great q&a segment that describes the use of notification settings... I have run into similar issue with youtube notification not working, and I think it boils down to enabling it per device... I will have to do more research, but he had a great explanation of how he figured it out.
I do have an spare LCIII motherboard that I can get you the Roms from to test yours. I sent an email to you as well on it.
You inspired me to look up those two demo songs. It's amazing hearing sounds I normally associate with the Sega Genesis coming out of a computer that predates the Nintendo. It really goes to show how even some of the best professional composers for 64 games didn't take full advantage of its capabilities.
Really love that little Philips CRT! Absolutely perfect to have on your bench without taking up too much room (which even 14" sets do).
What diagonal screen size is it?
Thanks for the exciting video, Adrian :)
Oh and what did I write a month ago? Use a power supply with current limiting. You have one, don't you? (Ouch :)) The Conan (The Barbarian: P) method just breaks more than necessary ... and makes me sad.
YT notification bell is scuff... Thanks for the vids!
@Adrian's Digital Basement
Thanks for another enjoyable and interesting video.
And I apologise for suggesting something that most likely appears stupid, but if You don't get ANY YT-notifications at all on Your "phone". It just possibly might be that You have set one of the (in my opinion) plethora of different ways that You can (knowingly and by mistake) disable notifications from being displayed on Your phone...
I know that I have managed to do it unintentionally more than once ;)
... Just a thought.
Best regards.
Good video! In the couple of LCIIs I’ve repaired they were dead like that because it required the battery installed. Not sure if that applies to the LCIII/Performa boards. Both of them also had PSU issues (All ELNA “Long-Life” secondary side failed. Non “Long-Life” were all ok.)
Man, we had stacks of LCII's and LCIII's that were getting phased out in favor of G3's and iMac's back in our school in 2000. They had a massive pile of at least 100 these things in our media center that went to the district computer grave yard never to be heard from again...
I do receive notifications for new videos from your channel
That's interesting about the ROMS. Amiga's with twin Kickstart ROMS are the same. You install them moved down a pin with extra socket holes available, yup. AND. If you install them wrong, swapped. They cook. However they tend to still work if you catch it quick. Ask me how I know. :)
A Turbo Chameleon 64! I have one of those. Primary reason I had for buying it was for the VGA output, but it's very useful. I've also played with it in standalone mode, where it functions like a MiSTer.
"Hey, here's a half gutted, half bricked, entry level machine no one really cared about, have fun."
Makes for a great repair video!
I myself am stuck with a dead LC II, which definitely needs recapping. Watching repair videos like Adrian makes gives me motivation to work on them. Even if it is an entry level machine...
I actually find fiberglass pencils take a long time to remove solder mask and the fibers break off and get everywhere. My preferred tool for removing solder mask is a sewing needle--the largest size you can get, hold it firmly and use a side to side action rather than pushing it. You can also use the point of a pair of tweezers if they're hard enough or don't have too fine of a point to begin with.
Great work Adrian 🕹
Killing incorrectly installed components with an overpowered PSU... been there, done that.
(it was an EPROM. Beeping it through showed the +5V pin had no more continuity. I thought "what do I have to lose", popped the window and tried inserting a wire to hook up to the what was left of the wire bond (it worked like a fuse), but either that was a too small scale to work with or the chip had died too).
My aunt's LCII (an actual LCII) also didn't work, black screen, weird noises from the speaker. I once got a white screen, but it locked up before anything else showed up. I ended up replacing the capacitors, which got rid of the noises, but still black screen. Then I wanted to remove the PSU to look at the caps inside and then I saw another leaked electrolytic hiding under the cable to the PSU. Replaced it and pling - the LCII booted right up.
And I just fixed a Roland XP-50 keyboard. When I looked at the mainboard, I got instant Adrian Black Leaked Macintosh Electrolytics flashbacks. Thanks for the hint with just twisting them off. I only damaged one pad.
Nowadays, most SID files are written for the 8580 because they all sound more or less the same, while with the 6581, if you have 5 of them, you'll get 4 different sounding versions of each song if the song uses filters.
My guess at the fault is either the ring modulator is bad or there is a problem synchronizing the oscillators. Or the resonance.
My main computer at the office I work at back in the 90’s through early 2000’s was an LCIII. It was ok. A co-worker of mine one time watered a hanging plant above the monitor I had with it. It dripped into the monitor and into the computer. When the tech came to replace the motherboard they noticed the water stain and I said I had no idea what happened! LOL. It was utilized until we got a PowerPC clone Radius.
That little capacitor in the middle; that looks similar to the one in a Apple IIgs power supply that died. I replaced it and all was well. I was wondering what it did.
12:20 - nope - the LC & LCII only had a 16-bit data path and a maximum of 10Mb support RAM. The good news is that it has 256Mb on board VRAM, so you don't need to populate the socket to get a video signal.
256mb:D
love C64 sid music i have huge playlist on my pc
ick, that things a wreck. I have a working lc 2 in the basement. I think it's currently holding up the Performa, which is holding up the mac se and the mac cube.
Notifications work fine for me without having the bell clicked, but then again I don't think I'm subscribed to that many channels.
Side note, do those big chip flashers work with flashrom? The only programmer I have is a CH341A that I use to resurrect machines from bios corruption, works pretty well.
I know this might not be the problem... Back from 93-98 I used to work on the olders Mac in College. Of the No screen or Boot problems also kicked back the need for a New battery or have one in.
That lighting though, your forehead is a beacon of shining glory!
7:30 At least this Mac doesn't rely on RF shielding for sound
haha
I've commented on this before, sorry I sound like a broken record. My little collection has LC II, LC III & Q605 boards and each of these will not post without a PRAM battery installed.
Yup, can confirm this on the LC475 (Q605)
There's a trick to make it work: turn it off and back on again. Really! Turn the power on for a 10-count, then off for a 5-count, then back on and the Mac should put video out. I think it's the video system in the pizza box LC derived machines not initializing without the priming charge from a good PRAM battery.
@@needfuldoer4531 Thanks, I'll have to remember this the next time one of my batteries dies.
@@needfuldoer4531 I can confirm!!!
Was going to post the same thing - one of the fist thing to try if you don't know the Mac is make sure the battery is there/has power.
The bell notification thing is weird. I get notifications for things that I didn't click, and when I do get them, they don't come until days later, but for other channels where I did click it, it comes right away.
Holy smokes, Adrian. That programmer needs its own apartment it's so big.
@Mr Guru Good lord! Thats the vintage programmers holy grail from the looks of it!
I have'nt had a YT notification in my PC inbox for about a year. But they are in the drop down menu when you click the bell at the top of the YT page.
Oddly the notifications seem to work for me at the moment. But it seemed like they were totally broken for over a year for me at one point. So I haven't really gone back to using the notifications page yet.
i used to have a virtual synth that allowed you to play various SIDs and iirc it has a slider to make it sound more or less broken also.
Could the sid just be different and not bad? Maybe that's why the changed manufacturing? Would love to see more comparisons of different sid chips as you find them
Dave Jones on EEVBlog uses Manfrotto stuff.
Apple had many Mac's with the moniker LC (12 in total IIRC), but only 5 "pizza box" designs. The LC, II, III, III+ & 475. The where very similar in fact so much so that Apple offered an upgrade path from the LCIII to the LC475 - it consisted of a new motherboard and top lid.
Worth noting that the LCII isn't really an upgrade over the LC (I consider it a downgrade, despite the fact that the LCII has 4Mb on board over the LC @ 2Mb, it also had a slight tweak to the video output to improve multisync monitor support, but my main gripe is the fact that Apple decided to remove the second floppy drive port!). I still have at least 60 of the various LC iterations as I used them in combination with Thursbys DAVE to share over 4Gb of data back in the day! Oh I must get around to creating a few videos!
CSG *were* MOS. Commodore bought into MOS pretty heavily in order to get their hands on enough 6502s.