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Hello All.

Hoping someone can help me with a few questions on this repair of Desert Assault I am working on. First, what is this black rectangular component in the picture? It looks to be short to ground and I need to find a replacement. It is right by the jamma connector. It is the first thing in the path from the blue video pad. Thinking a resistor array of some sort. Schematics label it as FB2. So maybe thinking a ferrite bead or maybe a filter or fuse of some sort? But it has 3 legs.

Second question. I removed the component, and it appears to allow the board to boot now (figured it would just not have blue), but I now get a "sub cpu sleeping" error. I have never seen a tired cpu. Any thoughts on what to check.

Repairs on board so far: deep cleaning, removed and polished up all removable chip legs, removed damaged amp (waiting for part to replace), fixed two trace runs ( guessing from shorts - one to amp and one to blue), replaced all electrolytic caps (several had bad esr, so did all), replaced a burned resistor, replaced 3 video transistors (think only blue was bad, but the others had inconsistent measurements so replaced).

Made some progress from it not doing anything.

Thanks for any advice on what to check next.
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