After fixing the M102 keyboard and replacing the top-case went so well, I figured I'd go ahead and put in a Y2K ROM. Removed the old and put in machined headers to have a makeshift socket. M102 powers up, contrast can go light/dark on the screen, but nothing else. Checked the solder joints and related traces on the PCB with and without the ROM. Unit has good batteries and 6VDC. I've done this before -- twice, so this one has me in a quandary. I am limited to my Fluke 77/BN for testing. Have not been able to find the M102 Service Manual anywhere to have more reference. Did notice the LCD ribbon was a bit pushed in (one wire worth) on the keyboard side of the ribbon.
With that I pose the question of, any ideas? Appreciate anything, GregS <><
