Donkey Kong Forum

General Donkey Kong Discussion => General Donkey Kong Discussion => Topic started by: Pro1 on October 19, 2015, 05:49:22 pm

Title: Donkey kong arcade machine not working
Post by: Pro1 on October 19, 2015, 05:49:22 pm

Does anyone know how to fix this? I haven't used the machine in 4 years or so and this is what appears on the screen.

Title: Re: Donkey kong arcade machine not working
Post by: Pro1 on October 19, 2015, 05:49:58 pm

Another pic

Title: Re: Donkey kong arcade machine not working
Post by: Pro1 on October 19, 2015, 05:51:27 pm

I was thinking of selling this machine but I grew up with this game and really think it is the best game ever made.

Title: Re: Donkey kong arcade machine not working
Post by: aarontruitt on October 19, 2015, 07:55:11 pm

Perhaps this site can help you. It shows screenshots of what different ROM failures look like on DK. Hope it helps.

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

Title: Re: Donkey kong arcade machine not working
Post by: Sock Master on October 19, 2015, 08:18:57 pm

Looks like the Z80 is not running.   This could be the Z80 or RAM or ROM or clock generator or other stuff (in that order of likeliness probably) because the Z80 depends on all sort of other hardware in order to run.

The easiest first thing to try, especially considering it has been sitting unused for a long time, is to pull the Z80 out of it's socket and then put it back in.   (With the power disconnected, of course.)

Sometimes the contacts in sockets get corroded over time and break connection.    Maybe just a simple slap to the center of the board (while the machine is unplugged) for some 'percussive maintenance' would restore loose pin connections.

Title: Re: Donkey kong arcade machine not working
Post by: tilt on October 20, 2015, 07:55:03 am

This is definately z80 related, as sock said.  Carefully remove and reseat all eprom chips (including the forementioned z80) and turn the machine back on.  Use this guide to help you accomplish this: youtube.com/watch?v=RkSCh53fO6Y

Title: Re: Donkey kong arcade machine not working
Post by: BillyGaines on October 20, 2015, 09:51:14 am

I bought a TKG-3 upright (4 board stack) last November with the same type of gibberish on the screen.   I reseated all the chips and it was a working Kong once again.  Good luck. 

Title: Re: Donkey kong arcade machine not working
Post by: Pro1 on October 20, 2015, 07:46:18 pm

Thanks guys. Appreciate the help.
Do you know anyone I can send the board to for repair?

Title: Re: Donkey kong arcade machine not working
Post by: YesAffinity on October 20, 2015, 09:21:15 pm

Mike's Arcade offers repair service.  Possibly Aracade Buffett, on KLOV.  Not sure if there's someone recommended that is regular on this forum.

Title: Re: Donkey kong arcade machine not working
Post by: Pro1 on October 25, 2015, 08:01:54 pm

Thank you

I reset the chips no luck. This machine has multiple boards beyond the regular so hopefully i can repair.

I have a call into mikes.