theres 3 layers.................darn.....did not know that. thought it was just 2

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and each via is a connection point between all 3 layers?...........that just makes them more prone to any kind of acid leak damage..............no wonder the se30 board has wrecked my head way more than any other mac

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come to think of it..............it makes sense now. I was looking at some via's (the 7 just next to the rom slot) on one side of the board they have no traces leading away from them. on the other only 3 have traces heading to the rom slot. I thought the other 4 were not used as I saw no traces on either side of the board. From what you just explained it makes more sense now.

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makes more sense.............but my head hurts more now.

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I got a different se30 working last year by melting pins into vias. It was on the ue8. I used the wire from new caps. hold it on the via, heat it , and it slowly sank into the via. snipped off the wire to the right length and bent it to reach the pin of the ue8. soldered it directly onto the pin. Think I had to do 5 to restore the display.

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out of curiosity is there a diagram of the hidden layer anywhere.

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cheers techknight