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Nice work

Will not last...just run heater voltage up to half a volt for a minute ...

At least it was a standard IC that failed, and not a custom one!

Background music during explanation is distracting.

thank you for explaining

I always love your videos! Thanks. Simple fix this time eh?! Great.

Nicely done :)

GBA starts flashing red at approximately 3 hours, 10 minutes, and 8 seconds I can't tell when it exactly died, but it definitely died somewhere around 30 seconds after the Pocket died Game Gear starts blinking at approximately 5 hours, 31 seconds It dies at 5 hours, 23 minutes, and 48 seconds (perfect timing with the song too, lol)

Thx for the extra info on your repair proceedures .

Great video. Can't wait to watch more of your stuff.

Dude, just discovered your channel. You need to do more vids. They are very well done!

I have exactly the same mk2 board , and i also have the sound problem, when i put her on to work in 30-40 seconds the passive cooler on the audio amplifier is very very hot !! Do you have the same thing? I dont know what to do

Hey what did you do to get it out of the initial watchdog problem? The board watchdogs whether or not I have it in test mode and if I bypass DMAG0 it doesn't boot so CPU side. My ROMS look good - going to start swapping some RAM to see if I can get it to boot at least the RAM test mode.

Hi, thank you for making this repair video, I learned a lot. I have this game PCB and it showed sub CPU ROM error when I boot up the game. Could please help me by telling me which file should I write into the EPROM? Thank you.

Awesome things to learn thanks

Thanks so much for showing this! I had never seen one before, only heard of it. So, it uses a CdS cell to sense that the gun is holstered (trapping the light and thus lowering the resistance)?

Are you still doing these 2 years later?

I have an arkanoid 2: revenge of doh that I can't get working... I don't have an EPROM tester or writer... do you sell replacement EPROM sets?

What does the SUB CPU do? the purpose of the SUB CPU is doing what

Homer Simpson

Super interesting that when you were looking at the diff between the known good ROM image and the one you pulled off the chip, ALL of the incorrect bit pairs had only shifted one place to the left. What in god's name would cause seemingly random bits to _all_ shift one place to the left? (i.e. 5C becomes 5B, 43 becomes 42, etc...) I've watched a few videos on "earth level radiation" (the low-levels of radiation coming from our sun and the environment around us) causing "bit flip" in memory (where a 1 becomes a 0 or vice versa) in memory, causing otherwise unexplainable blue screens/kernel panics. Given that these are ROMs we're talking about, I can't imagine any other hardware on that board actually managed to _write_ those incorrect bits to the ROM chip, so I wonder if the cause of this issue was something like a bad ground, transient spikes, or even low-level radiation! I'm sure there's some more mundane explanation (which I'd love to hear your thoughts about!), but it's fun to think about stuff like this =P

Happy new year! Would love to see more repair videos if possible. 🙂

cool

cool video, you just earned yourself a new subscriber, mister. i've got a few tubes that probably need cleaning.

Could you tell me how I would replace the monitor for the 1981 Sega Turbo cabinet game. I am a girl not that it matters but may help you help me. Also it worked just fine until it didn’t. Every thing still turns on sound and all just no picture so I am assuming it’s the monitor. Please help me

I’ve never played this one, I do spy Black Tiger in behind it! I’ve got the music stuck in my head now lol.

Good video. And i applaud you for keeping crt and not swap to lcd.

Which joystick did you use for your Gyruss cabaret? I know the regular uprights came with Monroe joysticks - any idea if you can just use an 8-way leaf joystick instead or does a Monroe make that much of a difference?

Thanks for the demonstration! I was curious how the picture is holding up these days, still as vibrant as when you did it?

Hi! I’m looking into replacing a tube in my old cabinet, is there a more detailed video of the actual tube swap (and the possible adjustments which need to be made)? Or just a guide on how to do it properly? Thanks!

Excellent work! I've been using a Mister Multisystem with their console case for a while but what I really wanted was a home computer styled case with a keyboard, as I mostly want to replicate my time with the CBM 64, ZX Spectrum etc. I've spent ages trying to figure out which vintage model to base it on though, bearing in mind the Multisystem design means I'd need a deeper case for it to sit behind rather than under the keyboard. On my shortlist were the Oric Atmos and Acorn Electron (albeit both needing to be extended back) and... yes, the Apple IIc! In fact I've been searching for old IIc cases to modify, but haven't found the right one - they either work, so I wouldn't want to ruin that, or they're too banged up. Anyway, I just came across your video and couldn't believe you had the same idea several years earlier! Great choice and hopefully I'll make my own version at some point in the future!

Awesome stuff. Thx for sharing your knowledge. Much appreciated.

Awesome stuff. Thank you for sharing this knowledge.

Ok how do i fix a bad rom uE13 the graphics are bad? Do i reflow it?

Hi i have a te pcb and when i turn it on theres no leds that turn on for power and the game dont boot up just a white screen.

Come back. Make more videos!

So cool! Great video, too!

I have an odd question. I'm working on a video that will compare every single 2nd gen console game to their arcade counterpart. I think this is the one game out of everything that I've come across for that video that isn't on MAME. Would it be at all possible to get like 30 seconds of gameplay footage from this to use in the video? If it's too much of an ask I totally get it as it doesn't look like an easy game to play and record at the same time.

I got a no led on mine no sound and no bong and does the iq thing also

Is there anywhere to get just the 16 bit adapter for the GQ if you don't have it? I bought the base version so it came with only some PLC adapters.

Excellent video. Thank you for the time and dedication invested to make this type of content.

Thanks for sharing your knowledge. Do you know how to access the test mode for the board Captain America And The Avengers by Data East PCB? I have problems in the graphics and I would like to know the Mask ROM that do not work correctly

I have a bad PAL on a DJ Boy I can't fix until someone translates it...

Funny. Last weekend I fixed a Vendetta (same HW as Simpsons). Guess what was bad? The same main CPU Chip Select PAL (but every output was stuck at a clean LOW). Also the palette RAMs. As for the Street Fighter EPROM... I usually check if the errors are 0s that flip to 1. Because if they are, I try burning the same image to the original EPROM which works most of the time. Sometimes the boards are stored in sunlight and bits do flip.

Let me send you an Xmen pcb with graphics glitches for your next episode :)

Where do you find the files to program masked rom on street fighter

Would it be at all possible to get your help with a BurgerTime upright I have that's experiencing a couple of issues? One of which is my own doing unfortunately. It started out with just having a sound issue where it was pulsing the same sound at startup but video and gameplay worked, I pulled the socketed chips and lightly sanded off any corrosion I could see and cleaned them off along with cleaning the sockets and reseated them all on both the CPU board and the sound I/O board. Now I'm getting no video at startup and the self diag test shows a ROM error. 😞 The error specifically is ROM TEST ER AA06 13B. Any help is greatly appreciated.

Tim here, this is my unit, I find that most tubes respond well with just a clean and balance, although sometimes one gun may actually get worse after the first cycle, requiring a second cycle. You are basically blasting material off the guns, and that material CAN find it's way onto another gun. Once in a while I will encounter a tube that requires "rejuvenation"... but they generally will improve somewhat. I have not had a tube worse off after the process though. If you do encounter a tube with bad gun(s), there is no repair... it is garbage.

Amazing video! Like & Subscribe. Thank you.

Hello.. I was just wondering if this CPU-7A PCB was still available?