sorry if this is in the wrong section ..
My mac Si boots to a grey screen with no chime or action after that.
The hdd spins but stops shortly after that.
Anyway - after a look at the board its easy to see why. every cap is leaking or bulged or both. So after 30 mins with a soldering iron, all the caps are replaced and the board has been cleaned with IPA. While the board was out i changed the crystal to 50mhz and gave the old girl a small increase in speed to 25mhz,
pic here on my web page.
only one minor mishap - one cap lifted a track , so i had to add a small jump wire to where the track would of gone.
all good, boots up and seems a little quicker too,