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9 fixed traces later (mostly near the DFAC chip) sound is working and the FPU is being recognized by Speedometer. Added the 50MHz crystal and things are looking good. Will probably have to take off that chip and repair the board further but for now i'll enjoy the Mac as is. The new SIMMs were...

Looks like from the Developer guide for the Classic II there is a 16MHz clock coming in to the FPU board so should be working. Ordered an external 5V DIP-14 clock to test (one 25MHz and one 50MHz to see if a 2x overclock works) just in case. Hopefully the MC68882 chip isnt faulty.

Hmm... unless that missing component on the FPU card is a DIP-14 crystal. No info with the manual that came with it.

Thanks for the replies all and thanks for all the help on reddit MrFahrenheit! The RAM was definitely 8x1024 chips and the seller is sending me new RAM (stock was mislabelled). No jumpers installed on my motherboard and also no external ROM on the FPU card. I have the motherboard revision in...

I do also see that some Rev 1 motherboard pictures have a blue bodge wire connecting the eagle chip with another on the top right of the motherboard while mine does not have that. Was that a factory fix for something?

Hello, I recently acquired a Mac Classic II in pretty rough shape and after a lot of work (including epoxying all the plastic screw holders back into place), got it booting with a nice bright image on the CRT. So far I had to recap both the analog and the Rev 1 motherboard after cleaning them...