Trying to revive a dead Amiga 2000
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- Опубликовано: 28 авг 2020
- In this video, I'm working on an Amiga 2000 that was donated to the channel. It had suffered the usual NiCD battery damage which killed it. Can I bring this machine back to life?
--- Video Links
Amiga Schematics:
www.amigawiki.org/doku.php?id...
Naval Jelly:
www.loctiteproducts.com/en/pr...
--- Tools
Deoxit D5:
amzn.to/2VvOKy1
store.caig.com/s.nl/it.A/id.16...
Jonard Tools EX-2 Chip Extractor:
amzn.to/2VazxDS
www.jonard.com/Products/EX-2-...
Wiha Chip Lifter:
amzn.to/3a9ftWw
www.wihatools.com/precision-c...
O-Ring Pick Set: (I use these to lift chips off boards)
amzn.to/3a9x54J
Elenco Electronics LP-560 Logic Probe:
amzn.to/2VrT5lW
Hakko FR301 Desoldering Iron:
amzn.to/2ye6xC0
Rigol DS1054Z Four Channel Oscilloscope:
www.rigolna.com/products/digi...
Head Worn Magnifying Goggles / Dual Lens Flip-In Head Magnifier:
amzn.to/3adRbuy
TL866II Plus Chip Tester and EPROM programmer: (The MiniPro)
amzn.to/2wG4tlP
www.aliexpress.com/item/33000...
TS100 Soldering Iron:
amzn.to/2K36dJ5
www.ebay.com/itm/TS100-65W-MI...
EEVBlog 121GW Multimeter:
www.eevblog.com/product/121gw/
DSLogic Basic Logic Analyzer:
amzn.to/2RDSDQw
www.ebay.com/itm/USB-Logic-DS...
Magnetic Screw Holder:
amzn.to/3b8LOhG
www.harborfreight.com/4-inch-...
Universal ZIP sockets: (clones, used on my ZIF-64 test machine)
www.ebay.com/itm/14-16-18-20-...
RetroTink 2X Upconverter: (to hook up something like a C64 to HDMI)
www.retrotink.com/
Plato (Clone) Side Cutters: (order five)
www.ebay.com/itm/1-2-5-10PCS-...
Heat Sinks:
www.aliexpress.com/item/32537...
Little squeezy bottles: (available elsewhere too)
amzn.to/3b8LOOI
--- Links
My GitHub repository:
github.com/misterblack1?tab=r...
Commodore Computer Club / Vancouver, WA - Portland, OR - PDX Commodore Users Group
www.commodorecomputerclub.com/
--- C64 Stuff
JaffyDOS:
blog.worldofjani.com/?p=3544
C64 Test Harness I use:
• Building a Commodore 6...
C64 Homebrew cartridge PCB: (used for the DeadTest / Diag Cart I use)
www.ebay.com/itm/Commodore-64...
EasyFlash 3 Multi-Cart:
store.go4retro.com/easyflash-3/
--- Instructional videos
My video on damage-free chip removal:
• How to remove chips wi...
--- Music
Intro music and other tracks by:
Nathan Divino
@itsnathandivino
Outro Music:
Abyss by | e s c p | escp-music.bandcamp.com
Music promoted by www.free-stock-music.com
Attribution 4.0 International (CC BY 4.0)
creativecommons.org/licenses/... 
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The number 1 thing I love about Adrian's videos is his highly animated talking hands.
i am not sure if they are always in sync with the audio signyl
Plug them into a scope to check!
I love your enthusiasm whenever something starts working.
Every time it happens, it puts a smile on my face.
It even brought water to my eyes a couple of times.
What a great channel.
@@avantesma1 His enthusiasm is impressive, I love it. And when it all works!!! oh yeah, it´s great...
Adrian and my other favorite Mustie1. Such joy after getting something working. Even as simple as making progress.
@@chemmerling Wow, I also watch Mustie1, what a small world.
Nobody's driving the address bus?! We're gonna crash!
It will only crash if you fall below 80Hz/Hr
@@abeleski By the logic of the movie Speed, doesn't that mean it'd blow up?
@abeleski 🤣🤣
@@TechnicolorMammoth let out the magic smoke you mean 😁
@@abeleski Haha that is true!
As a sound engineer in the 80's I was taught to solder and work on our equipment by my friend who has since passed away. He taught me the trick of using nail polish to cover solder joints when building audio cables. I still have that same bottle... it was not clear though, it is a bright fire engine red! That bottle is getting low but amazingly still works and I use it now and then when building or repairing mechanical keyboards. Thank you for another great video. Really enjoy watching your channel.
It's a great tip
Same.
I’m that’s awesome. I would have never thought of doing that.
You are so incredibly cute when you get excited about something that started working.
Amiga repair?! “Grabs popcorn*
Yea i immediately paused the vid and made myself a coffee.. yummmm
Broken Amiga? Get an Atari!
@@paveljelinek772 i love coffee
Instructions unclear. Used the Navel Jelly but my bellybutton is still dirty.
So are my oranges. :-(
@@andrewgwilliam4831 Rubbed it on a battleship, still dirty. :-(
Does it smell like cheese?
You need belly jelly, you got the wrong stuff ;-)
Hunter's Moon - not to be confused with Jelly Bellys.... mmmm....
Back in about 1982, being an electronics/computer geek, I had purchased an Apple II+ clone motherboard kit from a guy selling them locally. It came with a blank motherboard and all the components, so you had to solder all the IC sockets and other components. I loved the challenge and ended up with an Apple II+ clone at a fraction of the cost of a real Apple (which was about $2000 back then). There were a flood of apple and IBM clone parts stores that popped up in the early and mid 80s to help people build those clones much cheaper. When I watch these videos, it brings back so many memories of those early 80s days... the fascination and excitement along with it. I truly get endorphins in my blood seeing you work on these old systems where were the ancestors of today's PCs. Thank you!
Judging by the assortment of nail polish my daughter has, you'd think you could find a close matching nail polish color to PCB Green...
I almost expect a Dr. Phill ep where the daughter is accusing her geek dad of stealing her nailpolish to fix pcb's sometime in the future as an episode.
You're better off not, though. A lot of the stuff added to make nail polish pretty is metallic. Stick with the lacquer-only formula on electronics so you don't have to worry about causing a short.
4.20 am here in NZ, just finished a bad day at work and Adrian pops up, a great "life is good" moment
Keep up the good content, you are certainly worldwide!
Hello from your Aussie neighbour!
"Gee, where should we put the battery full of acid?"
"Right next to the CPU, of course."
"Brilliant, you are promoted!"
Seriously, the A2000 is the king of aggravating repair work- acid does crazy things old boards sometimes. I will definitely swipe that naval jelly tip though, I'd never considered using that on a slot like that- brilliant thinking as always sir. Rock on!
It's almost like the placement was a "Well... customers need a reason to upgrade in 10 or so years anyway".
It's called designed obsolescence
Performa alkaline I think... otherwise, vinegar wouldn’t help...
To be fair to the commodore engineers, they never did "planned obsolescence", they were always trying to make the best most advanced machine they could. But from an engineering tolernace point of view they did only design these machines to last 5 years tops, by which point the machine would have many successors so designing for a longer tolernace lifespan would increase the cost at no benefit to the end users. So batteries left inside the computers for 30 years were always going to leak. I bet many of those batteries stayed good for a lot longer than 5 years, and the fact that many of the chips still work after 30 years is nothng short of a miracle. There is a good talk in youtube from Bil Herd about vintage computers and aging where he explains all this stuff, and mentions how they never ever did planned obsolecence at commodore.
Hm how about placing the battery next to a custom chip we're gonna stop producing in a year so by the time the battery leaks there is no chance on earth to get a replacement for the battery-damaged chip?
Saturday evening. It’s raining outside. New video from Adrian. Life is good.
Those RGB lines normally in the overscan are the AKB (Auto Kine Bias)
During vertical retrace the monitor turns on each gun and monitors the cathode current. By doing this it can compensate for CRT warmup/wear and maintain proper white balance. You'll see this on just about every Sony PVM/BVM but some other monitors do it too.
Great job Adrian - enjoyed that again =D I have to admit to suspecting the 245's related to Zorro as soon as you removed the buster. It seems to be a fairly common when there's been leakage. The green screen was a chip RAM fault, but a red herring caused by that faulty 245. It's interesting that KS1.3 didn't behave the same way though!
I am not surprised you knew the symptoms! You've fixed so many of these boards before. :-) Was my first ECS Amiga repair -- only have worked on that Amiga 4000 previously. Isn't it odd had only 2.0 could see that faulty chip with buster removed. I can't quite explain that.
Do those others chips also die or is that one chip specifically?
Definitely learned a bit from this myself even after all the systems I've fixed. Not sure I'd have made that connection myself. But I guess we're always learning haha.
@@adriansdigitalbasement =D I have so much nostalgia for the A2000 - lovely machines, in some ways I prefer them to the A4000. Either of those 245s can die - it may also have nothing to do with the battery leakage and more to do with someone removing a card whilst powered on, or a bad connection whilst powered on. My friend did that accidentally to his A2000 back in the day - and one of those 245's failed on his. Another interesting thing was seeing how regular they are switched (when you scoped the OE). In some cases it probably failed and then just got put into storage, whereby the battery leaked. It will be interesting to see how you get on with solder mask paint - I've found it to be no better than nail polish tbh (actually I prefer nail polish). Has to be set with UV and the stuff I used kind of goes mat in appearance and doesn't set that well. Keep up the great work, your channel is fast becoming one of my fav tech channels. You often show things I totally skirt past, so its a bit of an eye opener and reminder I should be explaining things a bit more.
@@GadgetUK164 thanks for the feedback! I really appreciate it. And interesting on the PCB paint. Yeah I've always just used the clear nail polish lacquer and never had a single issue... So I'll be curious on the UV curing paint. I suppose it's a bit more resistant to coming off than the polish on the long run.
And fascinating about the 245s right? Yeah was shocked how much buster is switching them, even with zero cards installed. I will certainly always suspect them from now on I've seen some of your videos where you had the RAM 245s on the 4000s die too. Wonder what's up with those chips LOL
@@adriansdigitalbasement I am *not* a Commodore expert, but seeing you guys talking about this twigged a memory about another video I'd watched some time ago. It was the 8-Bit Guy's Commodore 128 history video. Bil Herd was a guest, and he talked about how the VDC (80-column chip) on the C128 didn't have an interrupt, so the computer had to keep checking a register to see if the VDC was done with its current assignment. I wonder if the same issue arose when trying to integrate the Buster chip with the 245s. That is, Commodore might've had a problem getting the 245s to communicate "hey, we're doing something" or "hey, we need something" so the Buster is just ALWAYS checking them.
The way you’re able to backtrack the signals from the chips to find the exact broken chip is absolutely astounding to me, being a computer engineering student who studied electronics at a tech high school. It’s so educating to me!
“You have failed me for the last time, chip!” - Darth Engineer.
Love seeing skilled people trying to fix faults.
I miss my Amiga 500, sigh. Though the motherboards were different it brought back memories of upgrading my good old Amiga. I added/swapped out the Agnes for the fatter Agnes, added extended memory and a hard drive. I always wanted a 2000 and drooled over the Video Toaster when it came out, scanning my monthly Amiga World for the latest upgrades, applications and games. Thanks for the memories.
What still amazes me is your enormous patience. Well, the same people would say when I am programming, but you are dealing with designs you didn't made.
Nice job fixing this huge B2000 ('B' stands for Beast) mainboard Adrian 👍 Such great machines! Quite easy to work on as well.
Mine also had battery damage but it was only an eaten HALT-trace and some corroded sockets and pins that kept it from booting. Pretty similar. I fixed it by cleaning the sockets and pins and simply adding a bodge-wire. I'm sure this one will keep running forever. Mine did 👌
I suffer from Depression, shame you cant fix that permantely but the videos you make, make my life a little easier thanks!
6:00 that's a pretty bodge wire! Nice job.
I could watch you debug anything, all day. So expert, patient and knowledgeable.
Even if this was a typical Amiga repair video from you we would still watch it Adrian! Your work is uniquely satisfying! Keep it up!
It's so beautiful watching you reparing those lost cases.
Dude, you've got great explanations always. I find it to be very valuable to be able to firsthand experience your thought process. The stuff you share does not only apply to the device you're fixing and is usually useful more generally and I find that to be awesome. Thnx a lot.
So glad you decided to make a video of the repairs. There are always little nuggets to pick up.
An another Amiga saved! Congratulation Adrian! 😃👍🙌
Just started watching, instant like for the shirt!
Was thinking quite the same. Been on the ride 2016, 18+19 ;) (+ had that Amiga board including the 2630)
Adrian, you simply amaze me. I never imagined that anything, most especially a computer could function with IC chips removed entirely! Your troubleshooting methods are awesome and make me wish I still had some of my vintage stuff so I could play along. Keep the great videos coming.
Same battery issue with my A500+. Brought it up from the basement one day and saw the carnage. Although there were actually no destroyed traces, nor components. Only the silkscreen around the battery. Removed it and cleaned the board thoroughly. Works very well. :)
This has really become my new fav channel. I don't have the resources or time to do all these projects you work on so it's really great to watch you do all this stuff.
There may be other A2000 repair videos out there but few are as informative, engaging, and as satisfying to watch as this one.
Adrian you are awesome! We can see the passion to fix old tec in your eyes.
Good job my friend!
I never realized until 32:30 how BIG that motherboard is! Good job on this video!
Thanks for the video Adrian! I look forward to them every Wednesday and Saturday.
I'm always impressed with your diagnostic skills. Very nice!
Adrian, I’ve been watching your videos for a while now and I’ve gotta tell you, you’ve really come a LONG way! Expertly done!
I really enjoyed this video, especially the methodical approach you took to fixing it.
But, capacitors have what motherboards crave!
Awesome fix and great video.
Ahh!! The Amiga is close to my heart. I got my Amiga 500 Plus when I was 12 years old and it was the most amazing thing.
Did it survive or was it also killed by a battery leak?
@@adriansdigitalbasement I had sold it way before to fund a Pentium 90 :( But these days I've got lots and lots of Amiga's... to many :P
Amazing knowledge you've got about all of this vintage stuff. I always get amazed.
Your enthusiasm is infectious backed up with a "have a go" approach and deep knowledge. Fascinating stuff, Adrian, even though I only follow 20% of what you say. Keep the content flowing.
I used have to have an Amiga 2000 with a hard drive and the 68030 card as well. One of my best computers I ever had. Thanks for the great trip down memory lane. The multitasking ability of the Amiga was ground breaking.
:-)
Great repair, well done. Cool to see the Amiga 2K getting some love.
Good stuff. Amigas are so awesome to work on. Everything is so well thought out on the boards.
Your troubleshooting skills are impressive!
Awesome stuff. Thanks for saving such a beautiful piece of hardware. All defective Amiga compiters should be saved like this one.
Another Amiga repair! Nice job Adrian
Thank you SO MUCH for these videos! Absolutely delightful and deeply educational. Your debugging mindset is inspirational and worthy of emulation.
Brilliant detective work leading to a fix!
What I've learned from your videos over the years: LS24X bus transceivers are the devil!
I am very impressed with your deduction technics. I am learning a lot from you. Thank you
I must say when youtube alerts me that there is a new Adrians Digital Basement video I cant wait to watch it just as if a new Dukes of Hazard episode was about to come on as a kid. Great video. Great topic (my fav: Amiga!). Great channel. One of my favorite channels. Thanks for making videos.
well done, as always. i've never owned, or worked on, or even used a commodore or an amiga. i watch cuz i always learn useful skills from you. thank you. take care & stay safe.
Adrian you have excellent troubleshooting skills. I am thoroughly impressed. Fred
13:40 - instead of bending the CPU leg, put a second socket into the board and bend the leg on that.
Yes, that is always the better option.
There's nothing worse than when a leg breaks flush with the chip package.
Great job Adrian, enjoyed the problem-solving. 👍 Brings me back to my successful A2000 repair viddy back in March.
I can't get enough of A2000 Repairs as i own one myself and its my collection pride... great vid...
Adrian, you are some kind of Retro Necromancer bringing these boards back to life =)
Excellent work, sir!
Great video Adrian! Love your Amiga videos!
Excellent troubleshooting :) I learned quite a bit about troubleshooting the 68000. The Amiga 2000 was the first Amiga I ever used - in High School with the Video Toaster and the Amilink EDL.
I used to have one of these when I was a teenager. I used to play Space Hulk all the time loved the manual too lots of cool stuff in there.
I don't remember subscribing to you but I am so glad I did! Awesome video, I absolutely love this style of vid.
This vídeo is for sure not a leakage like that batery was! Love your vids
Good to see that Amigas are still getting some love.
That debug session was absolutely mindblowingly genius.
Great work, Adrian!
Man, keep doing videos like this one, I loved it!
great video adrian, awesome work mate
Love the chip pin out off to the side. When I inevitably use this for reference someday that will be invaluable
Man, seeing your videos with the Amiga computers really brings back good memories when I was a child playing on my dad's old Amiga 1000 (it was maybe 10 years old when I started playing with it). It was the first computer I had ever printed in color from too using the Okimate! Nothing important ever, just the doodles I'd make in deluxe paint. I remember playing a couple of games on it whenever I would earn a break from having to play Reader Rabbit on the newer 486 system that sat next to it. I only can remember the name of the one game, The Three Stooges game, since I played that one the most of the few we had. Now I've got the urge to dig it out next time I visit home.
Nice, your persistence paid off! I was suspecting something shorted under the accelerator slot, without proper ultrasonic cleaning.
The highlight of Saturdays!
Popcorn yes. It could be a knockout chocolate brownie time as well. Adrian never fails to guide us through the tiny storms here in the workshop. And a rather brilliant pop by the shop time it was.
Great video. Learned a lot about the Amiga 2000. Thanks!
I'm a fan of the clear nail polish on the repairs. I like when consoles are put in clear cases, so I can see the boards, wires and other innards. So the clear finish, to me, is like one of those cases. You can see the fix and what went into fixing it.
This is making me want to get an Amiga. I've never had the chance to have one as a kid, as I was like 3 or 4 years old 😅
But yeah. I'm going to try my hand at repairing one.
You Sir, inspire me.
Awesome job! love seeing your videos!!!
Loving your channel!
Nice troubleshooting... A big thumbs up
It's always tricky to track down a logic chip problem, so this is a good catch. A lot of people, when looking into repairing a board, will overlook the logic chips and run themselves in circles.
Love your videos Adrian. Wish they were a little longer. 😀
adrians vids are one of the most useful in the net..
You were totally right! This isn't a never seen video, but the problem turned to be VERY interesting for a video!
This channel is fantastic. I just love the thorough troubleshooting employed, and learned quite a bit. Half makes me wish that I had studied EE versus CS, but hey, the world needs programmers too.
I was a CS major too -- so this is all self taught. :-)
@@adriansdigitalbasement I was a film major. ALL this sort of stuff has to be self-taught (although I also picked up plenty of soldering tips from working in the IBM Z test lab)
Nicely done!
I hadn't considered trying naval jelly, although it makes sense for this use-case... Seems like you got good results, so I'm willing to try it on the next board I'm doing corrosion repairs on.
So, I know you're hesitant about doing board repair videos if there are others on RUclips, but you're so incredibly awesome (and a joy to listen to and watch work) that I am sad you won't do a video on putting together that replica Amiga 2000 PCB. You keep teasing about it too!
Brilliant repair.
That was quite informative, thanks Adrian.
Your videos always amaze me, they are inspiring and - damn do you have patience when troubleshooting!
You did an amazing job on troubleshooting love it! Keep it up ^^
There can never be to many Commodore repairs, thumbs up for this one👍🏻 Thanks for this video, as always verry clear. Would you do an Amiga repairathon once?😁
Looove this detective work!
Sooo interesting! 👍
My 2000 had _far_ worse corrosion, but no bad chips. I think I might have had an easier time. Great job debugging.
I know I am late to this, but I love these educational videos! And if I ever get a faulty Amiga, I might actually be able to fix it
Sir, you are a necromancer. Great job!
Nice to see another A2000 up and running again. One of these days I will have to go through this type of process on my own A2000. I did finally clip out the battery but that is as far as I've gone. My A2000 has a CHIP RAM memory expansion board in it. One of the wires has come undone. I will have to see if I can find the docs for the mod in order to determine where the wire goes.
Fantastic video another 2000 saved great job.