The Simpsons (Konami) PCB repair #3

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Caius Arcade Repairs & Engineering
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Published on ● Video Link: https://www.youtube.com/watch?v=o32ZPtuRAgM


Duration: 2:35
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Symptoms#1 : board has watchdog active.The game booted properly once disabled temporarily the watchdog by closing the 'JP' jumper.

Fix#1 : Replaced bad custom SIL '051550'.

Symptoms#2 : colors of some parts of backgrounds are bleeding

Fix#2 : replaced bad ASIC '053251' (priority/palette encoder chip) @10J

Symptoms#3 : player 1 coin input is stuck low.

Fix#3 : replaced bad 74LS257 @9C



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