Picked up this Donkey Kong cocktail non working. The Sanyo 14AZZ was not giving me an image so I recapped it which got me something to look at.
At that point I had a bunch of garbage on the screen. I pulled the roms/proms and found a leg on 5H corroded and broken. I replaced that rom and got the image here. I verified the rest of the roms are good. I cleaned the entire boardset but no change. The bars go through Donkey Kong and a couple other spots on the screen. It is very similar to what this Youtube video is showing: https://www.youtube.com/watch?v=5Muy8WpSEBw (my bars are horizontal but his are vertical). I've got 5v on a few areas I've checked on the board as well.
I have some sound issues as well but they sound fairly typical. Digital sounds are all very very quiet, analog sounds are fine. I've got a LM324 and DAC08 on order to hopefully resolve that.
Any ideas? I'm fairly certain that this is going to force me to buy a logic probe and learn how to use it and read schematics. I've never had to use one before but I had a feeling it would come eventually.
At that point I had a bunch of garbage on the screen. I pulled the roms/proms and found a leg on 5H corroded and broken. I replaced that rom and got the image here. I verified the rest of the roms are good. I cleaned the entire boardset but no change. The bars go through Donkey Kong and a couple other spots on the screen. It is very similar to what this Youtube video is showing: https://www.youtube.com/watch?v=5Muy8WpSEBw (my bars are horizontal but his are vertical). I've got 5v on a few areas I've checked on the board as well.
I have some sound issues as well but they sound fairly typical. Digital sounds are all very very quiet, analog sounds are fine. I've got a LM324 and DAC08 on order to hopefully resolve that.
Any ideas? I'm fairly certain that this is going to force me to buy a logic probe and learn how to use it and read schematics. I've never had to use one before but I had a feeling it would come eventually.
