Recent content by kjoh

Hello folks. I have this very excellent MEX68KECB trainer, which I have verified to work by talking to it over RS232 with an old PC. At one time I imagined trying to do cross-development using Linux and gcc, but now that I have a couple of Classic Macs around here, I figured it would be way...

That pretty much sums it up, lol.

Holy crap, it's booting!!! I am beside myself, thanks guys!

Hi, all. The VIDOUT and HYSNC to the molex plug were fine. HOWEVER, ringing out pins on the UE8 show that pins 2 and 7 don't make it to where they're supposed to. I'll bodge in some wires, and see what happens.

That sounds like a logical place to start, thank you.

Yes, those are notably crusty, and closest to the worst of the capacitor leakage. And thank you bibilit for your response and those forum links. I guess I'm going to be shelling out for a hot air station.

Ya, hi, aside from some light toothbrush scrubbing with IPA on visible areas, I did not wash the board. There was electrolyte juice everywhere, and I did not touch anything hidden under ICs, so maybe that's a thing to look at, thanks.

History, symptoms: Came to me with leaky caps on the logic board. Replaced surface caps with tantalums, and repaired known bad traces. The computer bongs on power up along with hard disk and floppy activity, but usually no video. Occasionally I will get a screen like the one shown...