Hi there, I hardwired the two pins to the back of the board, switched on, still nothing on screen, S25 north.
Checked continuity of wires....ok
I took the last requested set of measurements again ....no change.
DaveLecky wrote: ↑
Mon Sep 30, 2019 10:45 am
here are the readings, taken twice to confirm.
IC51 pin 1 to IC1 pin 25 (6502 CPU A15) = 0.4
IC51 pin 1 to IC51 pin 28 (+5V / VCC) = 0. Open circuit
IC51 pin 27 to IC1 pin 24 (6502 CPU A14) = 0.4
IC51 pin 27 to IC51 pin 28 (+5V / VCC) = 0 open circuit
Put the adapter in again....no change
Removed adapter....inserted Trickys test rom......S25 north.
And got this....
The image is flashing, but not changing or progressing, even when hitting Break.
Looks like the first frogger screen of the test sequence, I wasn’t getting that before.
Must be more than one fault.
I’ll change the socket first to eliminate it from the equation.
Electron, A3000, A3010,A4000,A5000, A7000+,RiscPc, PC....dumped or sold most.....Started again....now have, Electron, Plus1/6, Plus3, Pres3/4, BBC B, Master ........retired early to play.....8bit...and Elite Dangerous on PS4 of course.