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Author Topic: Donkey Kong PCB issue  (Read 2900 times)
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Kaboom
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« on: March 30, 2016, 09:18:30 am »

Hi All, Picked up a replacement DK PCB to replace a Double DK PCB in my machine and when I plugged it in I got the following display -



I tried re-seating all the chips and connectors.  Was told this was a working board when I bought it.  Any direction would be appreciated.  Thanks.
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John's Arcade
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« Reply #1 on: March 30, 2016, 10:23:35 am »

Hi All, Picked up a replacement DK PCB to replace a Double DK PCB in my machine and when I plugged it in I got the following display -



I tried re-seating all the chips and connectors.  Was told this was a working board when I bought it.  Any direction would be appreciated.  Thanks.

Did you check your voltages?

I had a DK3 that was doing that after being in storage for a couple of years. I had to reseat all the chips to get it working again. Took several tries too.
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Kaboom
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« Reply #2 on: March 30, 2016, 10:57:39 am »

I did find the z80 chip had a broken leg and swapped that out.  Improved the video image but still needs work.  I will double check my voltages next... thanks for the advice!
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Kaboom
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« Reply #3 on: March 31, 2016, 12:41:03 pm »

Found an eprom with a broken leg.  I'm now considering buying an eprom programmer and have been looking on ebay but I'm not sure what is good and what is junk.  Any advice on what I should buy?  Thanks.
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HarrieD
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« Reply #4 on: April 01, 2016, 03:32:12 pm »

Got this one:

http://nl.aliexpress.com/item/High-Speed-TL866CS-Programmer-USB-EPROM-EEPROM-FLASH-BIOS-AVR-AL-PIC/32479845822.html?spm=2114.48010208.4.6.ttSaBC

Only use it for programming pinball eproms from 2716 to 27c040. Don't know what DK uses.
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Kaboom
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« Reply #5 on: April 02, 2016, 01:19:29 pm »

Got this one:

http://nl.aliexpress.com/item/High-Speed-TL866CS-Programmer-USB-EPROM-EEPROM-FLASH-BIOS-AVR-AL-PIC/32479845822.html?spm=2114.48010208.4.6.ttSaBC

Only use it for programming pinball eproms from 2716 to 27c040. Don't know what DK uses.

Thanks for pointing this out to me... much appreciated!
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