5 Oct
2015
5 Oct
'15
12:26 p.m.
Is UD11 the only empty socket? If there's a chip
in UD12 I'd remove it in case it's defective or
has bent pins etc.; it'll be an option ROM of some
sort.
Done, I'll see if my programmer can read it once my only working windows box
stops updating itself, sheesh.
Vcc. I would connect the monitor though instead of
just relying on the buzzer for signs of life; if
there's any display at all it might give a useful
clue.
Hm. Nothing at all from the monitor and checking the voltage at 10 + 11 on
the iron lump shows nothing - I didn't check them over the weekend as they
only run the monitor and the other pins seemed ok at 18 and 8VAC.
I'd also check UD7 for poor contact or bent pins
Had that out earlier and it seems ok.
Finally, I'd ask on the Vintage Computer Forum;
even without me (;-) there are some very
knowledgable PET folks there.
OK :)
--
Adrian/Witchy
Binary Dinosaurs creator/curator
Www.binarydinosaurs.co.uk - the UK's biggest private home computer
collection?