Neo Geo 4 slot fails after 5 min

FunkieTom

Timid Neo Newbie
Joined
Feb 16, 2011
Posts
2
Greetings! I recently purchased a replacement motherboard for my MVS cabinet which I haven't used in years. How delighted I was when I switched out the board, turned it on, and play a couple of holes on Neo Turf Masters! Well, 5 minutes in, the screen glitched out and the numbers on the coin counter LCD started blinking to a rhythm. By resetting the system, I was able to play a little more, but maybe for only 3 minutes. It seems as the system cools, I could play again. Any ideas what could be going wrong? Is a component overheating? Any assistance greatly appreciated!
 

maki

Twinkle Star Sprite
Joined
Jan 1, 2022
Posts
30
sounds like dried capacitors in the power rail?

can you measure the voltages and see if they're jumpy/breaking down?
 

Neo Alec

,
20 Year Member
Joined
Dec 7, 2000
Posts
9,475
Check if the voltage regulators and chips are getting very hot. Check the voltages coming from your power supply.
 
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