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(SE/30) 2 mainboards both have Simasimac after recapping


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Hi there,

Recently, I picked up two SE/30 boards to repair.

So far, I’ve been having trouble repairing them as both seem to have Simasimac even after cleaning and recapping them.

 

One of the boards has the early stages (artifacts across screen) with death chimes while the other one has zebra bars and no chimes whatsoever.
 

Both persist even when ROM and RAM are pulled out, both have no batteries, and both persist after resetting (both power and buttons on board) 
 

What steps should I take next? 

 

 

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UE8 looks pretty rough on both of these. Have you checked continuity between the tops of each pin and another point on the board it connects to? This effort here should be useful in that regard:

 

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