Hello all, I picked up an SE SuperDrive last week and been busy restoring it. Cleaned the floppy drive and replaced the eject gear, recapped the analog/logic board and the power supply (it has an astec power supply and all capacitors tested good, but replaced them anyway), also dealt with melting rubber bumpers in the quantum hard drive (wrapped several layers of teflon tape around it as removing the bottom magnet requires taking out the head assembly).
Now after putting everything back together, it greets me with a checkerboard pattern:
Thought it might be a ram issue, i replaced all 4 ram sticks with known good ones (1Mx8, 8 chip, 80ns), but it still boots to checkerboard. However, after about 10 seconds it chimes and booted up as usual, and sees all 4MB ram. Power cycled it several times, it will always get stuck at the checkerboard screen for ~10s before chiming and booting up
Is this normal for an SE FDHD/SuperDrive? All SEs I have chime instantly when power is switched on. Reset is slow too, after pressing reset button it takes about 10s to chime. Otherwise this SE FDHD is fully functional.
Now after putting everything back together, it greets me with a checkerboard pattern:
Thought it might be a ram issue, i replaced all 4 ram sticks with known good ones (1Mx8, 8 chip, 80ns), but it still boots to checkerboard. However, after about 10 seconds it chimes and booted up as usual, and sees all 4MB ram. Power cycled it several times, it will always get stuck at the checkerboard screen for ~10s before chiming and booting up
Is this normal for an SE FDHD/SuperDrive? All SEs I have chime instantly when power is switched on. Reset is slow too, after pressing reset button it takes about 10s to chime. Otherwise this SE FDHD is fully functional.