As you might have noticed I am restoring an SE! Sorry for the many threads, I just didn't want to hack the existing ones with OT questions.
I have a couple more questions for this system.
1. Battery. I removed the Varta battery (which surprisingly has still 2.9V in it!) and found that my CR2032 battery holders really don't fit elegantly. I'd like a better solution. Before re-inventing the wheel I was wondering if someone has come up with a good solution. Either a better holder or maybe a small PCB interposer to allow a standard holder in place. Maybe - if height allows - to be installed vertically? If not, I'll try to design one and share here!
2. The computer fails to boot every now and then. I turn it on, I have the "fine diagonal lines background". But after around 17 seconds I normally hear a "click" from the speaker and the computer finally boots. Sometimes that never happens and the computer stays with that background forever. If I reset using the button, it works fine.
It seemed it was happening when cold but today it happened after being off for a couple of minutes. Voltages seem ok, maybe -12V is on the low side (-11.6V) but I have a feeling it's not such an important voltage.
I can check the reset line but I was wondering if anybody had any ideas - maybe it's a known issue with this machine!