I've spoken too soon :( Swapping the 6520s gives no cursor and no keyboard input, so I think I have to find a spare PIA (or design my own PLD version, if I want to spend some months of spare time doing it). Does anyone have a 6520 I can buy? On Thu, Feb 2, 2017 at 1:02 PM, Francesco Messineo <francesco.messineo@gmail.com> wrote: > Hi all, > I've just repaired the 3032 electronics (case and all repaint will > require months). > It smoked a tantalum capacitor on first power-on (no, it wasn't > shorted as I tested all of them before powering on), then it showed > the usual random characters screen until I found and replaced two bad > ROMs. It was an easy repair after all, considering that almost all > chips have a 1979 date codes (two of them have a 1978 date code). > I've wired the power transformer for 240V, it was originally wired for > 220V, the secondaries give a bit more than 16V AC now and all the > supply rails look fine. > Now I'll test (as time permits) the ports (IEEE, parallel, both tapes). > It was the one where I've found the "super tool" UD3 ROM expansion, > and it's my only PET anyway :) > CRT looks fine too, sharp and bright. > Just happy about it, no questions :) > > Frank IZ8DWF Message was sent through the cbm-hackers mailing listReceived on 2017-02-02 15:00:02
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