Rush & Crash Repair Logs

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Repairer: Apocalypse
Source: Rush & Crash (The Speed Rumbler) - Capcom 1986 (repair log)

I got this game in very good condition (lacquer was still shiny).
At power up I was greeted by a black screen and no sound.
This board was populated by a lot of Fujitsu chips... First step was to identify and replace all the dead Fujitsu chips. After a first batch (around 20 ICs) I managed to get something on screen:
ApocRNC 1.JPG

Then I had to change more bad Fujitsu chips with floating inputs, harder to diagnose.

Each time I ran the game in the hope of any improvement:
ApocRNC 2.JPG
ApocRNC 3.JPG
ApocRNC 4.JPG
ApocRNC 5.JPG
ApocRNC 6.JPG

To finally obtain correct graphics:

ApocRNC 7.JPG
ApocRNC 8.JPG

The battle wasn't over as the game was still silent. The audio RAM @ 3F (on top board) was dead. Replacing it restored the sound.

Game fixed.