John's Arcade Forum - Classic Arcade and Pinball Collecting and Restoring Discussion Forum - RETRO MAME - Nintendo Vs Forum

So I've finally managed to pick myself up a DK PCB! ....... And it doesn't work.  :(

So I have come here to search for help. My issue is that when I start up the game,  the game constantly resets -- showing only the "L=00", "1UP", and some video garbage ((blinking)). I do get the DK jump sound when I boot the game up (this is always good). I also notice some rust on multiple ram chips, but I don't think it is bad enough to make the game not work...but it's always possible.
I doubt the EPROMs are in wrong positions but just put a close-up of them for you to make sure. Also, the wiring and voltage feeding from power supply is correct. Hopefully, you guys can help.

Here's a detailed video on my pcb and error -- https://www.youtube.com/watch?v=9eK75AFE68w&feature=youtu.be

Here's some pictures of the pcb and error --

Blinking Error:
(http://s30.postimg.org/fw76gvq2p/IMG_5034.jpg)


Whole PCB:
(http://s30.postimg.org/pndoyc3b5/IMG_5021.jpg)

EPROMs:
(http://s30.postimg.org/o5s8mrykh/IMG_5022.jpg)

Rust Example on Rom Chip:
(http://s30.postimg.org/3kdguvgzl/IMG_5023.jpg)

Thanks in advance!  ;)

Bad 5A:

http://www.brasington.org/arcade/tech/dk/

That's a 2532 eprom. Try reseating it first.

Reseated the 5A and Z80.. No luck. Guess, I'm going to have to get a new 5A, wish I had a eprom burner.   :-\
Thanks for the help! ;)

I don't have any 2532's but I can get some in and make one up for you

I can get that rom , in fact the one I get might already work Lemme check into it.
.. but I don't have my burner yet its in the mail lol

I had that exact same issue when I bought my DK cab. Like has been suggested it is likely a rom issue, it's what my issue was.
(in fact they ALL turned out to be bad)

In my case I fixed it just by installing a Braze High score save kit since it replaces the 4 main program roms,
in fact I removed them completely from the PCB.

The common problem with these Nintendo boards is the uncovered rom windows which often lead to data corruption, otherwise they are very tough, well made boards.

If you ever intend to add a save kit in the future it couldn't hurt to do that now.

I seem to remember I paid $40 for it, it added features like board test, attract sound and freeplay, all things I wanted anyway, and when I did the math it was cheaper than if I had ordered replacements for just the 4 program eproms..... it would have cost me close to $60
since at the time I didn't own a Eprom programmer.

I'm considering buying a Donkey Kong High Score Save Kit, because I was already considering buying one anyway, once I got the board working.
So, If I understand right, the DK Save kit, will replace "5A","5B","5C", and "5E" on the CPU board. Correct? :)

Ian, I am still interested in that "5A" eprom anyway. Just let me know when there in!  ;)

Yes, you are correct the save kit replaces 5A,5B,5C,5E on the CPU board.

I just want to give you a heads up:
don't be surprised if some sounds are missing when you get it working, if your CPU roms are going bad, then it's likely the two sound roms have also corrupted.

I just rewrote those two when I bought my programmer, I was even able to reuse the stock ones.

Yes, the high score save kit replaces all the roms on the board. I would get the D2K kit then you get D2K and the high score save functionality and freeplay.

Ok! Thanks Guys!  :D Once I get my kit in the mail, I will tell you how it goes!

THANKS!  :D

Alright, so I received the Braze H/S Kit in the mail, and it works now!  :D The only problem now is that it is upside down. :(
Before, installing the kit, the error was upside down. (after taking pictures of error on screen to post on forum, the picture randomly flipped)
Now, that I have the kit installed DK is fully working but upside down. Also, I don't want to have to do the braze flip screen hack method either, and the reason for that is that it used to be in the right position (not flipped). So, anyone got any ideas?

maybe its in cocktail mode? or maybe just swap the yoke coils

I highly suggest you clean the ROM pin legs with a pin eraser and deoxit. You might just find that those chips aren't bad at all.

Although some of those windows don't have tape/label protecting them from UV light.

If they were sitting exposed to direct sunlight long enough the data could be corrupted.

2532's roms are in stock now. Do you still want a rom burned?

Ok, so I ordered a pin eraser and other cleaning supplies and we will see what happens! Thanks for the suggestion Tighe!  :D

Also, Ian I will send a PM tonight, whether If I want one or not. I need to think it over.

And, Cocktail mode does not effect it.

Check the yoke wires neck then.

Yoke wires are ok. Also, I found this helpful writing over on KLOV (pic below). So, there is still something wrong with the pcb. I have ordered some cleaning supplies for the pcb as Tighe has suggested and once I clean it, I can eliminate if anything was not making contact or not. I stumbled up on another cheap untested DK PCB and it had a prob. So, I took the cpu board from that one and linked it with the video board of the one I have been trying to fix. And it worked! So, my prob. is somewhere on the CPU board. And, I still want to fix it.

(http://s15.postimg.org/dbzibr7iz/Capture.png)
http://forums.arcade-museum.com/showthread.php?t=189783

Thanks!

would you be willing to sell your broken set?

Sorry. I am going to keep one as a spare.

Not a problem. When I get time this weekend I'll run through the schematic and see if I can find something

Awesome! Thanks!  ;) :D

If you do I have a 4 board set  with a bad clock board.