Donkey Kong issue

[Tate10]

Wondering if anyone has any ideas about my problem.  The game works perfect until I get to the first pie board and then the screen scrambles when I get up to the fire.  Never had this problem before and I just did a cap kit on my monitor.  This happened three times in a row at about the same spot on the pie board.  I have an original 2 board pcb.  Any help would be great.  Thanks guys.   Oh yeah this is my first post!

[arcadefan1985]

Might try re-seating everything and hope that works. Sounds like a corrupt rom.

[arcadefan1985]

This might help

Function   Chip Type   2-Board location   4-Board location
Color Maps   256x4 prom   2E (CPU)   2K (CPU)
Color Maps   256x4 prom   2F (CPU)   2J (CPU)
Character Colors   256x4 prom   2N (VIDEO)   5F (VIDEO)
Fixed Characters   2716   3N (VIDEO)   5H (VIDEO)
Fixed Characters   2716   3P (VIDEO)   5K (VIDEO)
Code 0x3000-0x3fff   2532   5A (CPU)   5K (CPU)
Code 0x2000-0x2fff   2532   5B (CPU)   5H (CPU)
Code 0x1000-0x1fff   2532   5C (CPU)   5G (CPU)
Code 0x0000-0x0fff   2532   5E (CPU)   5F (CPU)
Not used - vacant           5L (CPU)
Moving Objects   2716   7C (VIDEO)   4M (CLK)
Moving Objects   2716   7D (VIDEO)   4N (CLK)
Moving Objects   2716   7E (VIDEO)   4R (CLK)
Moving Objects   2716   7F (VIDEO)   4S (CLK)
Digital Sound   2716   3F (CPU)   3J (SOU)
Digital Sound   2716   3H (CPU)   3I (SOU)
Z80 CPU   Z80   7C (CPU)   5C (CPU)
8035 MPU (music)   8035   7H (CPU)   3H (SOU)
CPU RAM   2114   3A (CPU)   XX (CPU)
CPU RAM   2114   4A (CPU)   XX (CPU)
CPU RAM   2114   3B (CPU)   XX (CPU)
CPU RAM   2114   4B (CPU)   XX (CPU)
CPU RAM   2114   3C (CPU)   XX (CPU)
CPU RAM   2114   4C (CPU)   XX (CPU)
Character RAM   2114   2P (VIDEO)   XX (VIDEO)
Character RAM   2114   2R (VIDEO)   XX (VIDEO)
Object RAM   2148   6P (VIDEO)   XX (VIDEO)
Object RAM   2148   6R (VIDEO)   XX (VIDEO)

[Tate10]

I played a quick game this morning without a problem.  Last night the game was on for a couple hours before I even played.  Maybe I have a ROM that is getting hot and going bad? 

[John's Arcade]

I played a quick game this morning without a problem.  Last night the game was on for a couple hours before I even played.  Maybe I have a ROM that is getting hot and going bad? 

Could be anything. bad sockets, bad voltages, heat, etc. Do the simple things first... reseat eproms, check voltages, etc.

[STEVESPEEZE]

I played a quick game this morning without a problem.  Last night the game was on for a couple hours before I even played.  Maybe I have a ROM that is getting hot and going bad? 

What he said... a rom.