TKG3-06 Donkey Kong repair log: special 'Jehuie' edition
Thanks to Jehuie, I'm now the proud owner of an 'untested' 4 board DK stack. I'll try to keep this thread as a way to document my attempt to get this board set going. Since I already have a working 4 board set, I have something to go on.
I'm by no means an arcade repair expert, but I'm learning.
Received the board well packed - thanks. Yes, the board was VERY VERY dirty.
Mouse nest between the board stack, turds stuck to the board, all kinds of nastiness. Why did I take this on??
I donned some rubber gloves and took apart the 4 boards, removing them from the frame. I removed every socketed chip and set them aside. I will test them in my eprom reader later, to make sure the data on them is OK. Interesting thing I noted on this board set - on the clock board, 2N, 2P, 2R, and 2S are all socketed. On my working 4 board set, these 4 chips are not socketed. Does that mean that this board set has been worked on before? Not sure.
After a quick bath in the dishwasher, things are already beginning to look a bit better:
As I was disassembling the board stack, here are the other things I noticed:
1. The ribbon cables are all shot. Chewed up. How hungry do you have to be to eat a ribbon cable? I don't know, but try asking the mouse that took THIS bite:
The other 3 cables are all damaged as well. I'll need to replace them.
I also noticed a ceramic capacitor on the clock board is damaged. Not sure if that will affect things, but it would be a good idea to replace it:
There's also a leg on eprom 4S from the clock board that's about to fall off. I'm not sure if it's a leg that's redundant or n/c, but I'll figure that out later. The leg is barely hanging on by a thread right now, so I'll try to repair it. Unfortunately the near break in the chip leg is about half way down, so to repair the chip I'll probably have to clip the leg off a bit higher and splint on a donor leg from a junk chip. Not sure that's worth doing to an eprom chip that I can replace for a couple bucks. Does anyone have a quick jpeg of the eprom pins and what they do? That way I could determine if my problem chip leg is an issue or not.
Also, I seem to be missing a chip on the clock board. It's the one at 2S. Google search tells me the chip is an 8 bit universal shift/storage register - Texas Instruments. Anyone know where I can get this chip? I don't think I can test the board without this chip in place.
Thanks to Jehuie, I'm now the proud owner of an 'untested' 4 board DK stack. I'll try to keep this thread as a way to document my attempt to get this board set going. Since I already have a working 4 board set, I have something to go on.
I'm by no means an arcade repair expert, but I'm learning.
Received the board well packed - thanks. Yes, the board was VERY VERY dirty.
Mouse nest between the board stack, turds stuck to the board, all kinds of nastiness. Why did I take this on??
I donned some rubber gloves and took apart the 4 boards, removing them from the frame. I removed every socketed chip and set them aside. I will test them in my eprom reader later, to make sure the data on them is OK. Interesting thing I noted on this board set - on the clock board, 2N, 2P, 2R, and 2S are all socketed. On my working 4 board set, these 4 chips are not socketed. Does that mean that this board set has been worked on before? Not sure.
After a quick bath in the dishwasher, things are already beginning to look a bit better:
As I was disassembling the board stack, here are the other things I noticed:
1. The ribbon cables are all shot. Chewed up. How hungry do you have to be to eat a ribbon cable? I don't know, but try asking the mouse that took THIS bite:
The other 3 cables are all damaged as well. I'll need to replace them.
I also noticed a ceramic capacitor on the clock board is damaged. Not sure if that will affect things, but it would be a good idea to replace it:
There's also a leg on eprom 4S from the clock board that's about to fall off. I'm not sure if it's a leg that's redundant or n/c, but I'll figure that out later. The leg is barely hanging on by a thread right now, so I'll try to repair it. Unfortunately the near break in the chip leg is about half way down, so to repair the chip I'll probably have to clip the leg off a bit higher and splint on a donor leg from a junk chip. Not sure that's worth doing to an eprom chip that I can replace for a couple bucks. Does anyone have a quick jpeg of the eprom pins and what they do? That way I could determine if my problem chip leg is an issue or not.
Also, I seem to be missing a chip on the clock board. It's the one at 2S. Google search tells me the chip is an 8 bit universal shift/storage register - Texas Instruments. Anyone know where I can get this chip? I don't think I can test the board without this chip in place.

