I took a working Pismo with a display ribbon cable issue and replaced the entire screen/case/ribbon cable yesterday. While I was in there I replaced the Pram battery. Took the usual anti-static precautions. Put it all back together and...... nothing works. No fan, no HD spin, no raster on the screen. No keycaps light. Nothing.
Did some research around the web and tried the following:
Hard reset using the Reset button on the back;
removed main battery and let the new Pram battery charge for many hours;
tried starting with the Pram battery unplugged;
tried starting with the old Pram battery plugged in;
Left unit unplugged with all batteries removed overnight;
Took apart again (several times) and checked connectors, and reseated modules and connectors.
This morning after the latest rebuild the the Keycaps light lit up, but still nothing else. After I disconnected the ac and reconnected it.... no more Keycaps light. Any thoughts on how to proceed from here? I greatly appreciate any advice.