My last thread was almost the same problem, but then with a regular STe.
This time, I got a "cheap" mega ste and it shows practically the same symptoms:
Note: the diagonal lines move horizontally (different speeds)
Tiny difference: When i hit keys on the keyboard: no sound.(also tried with a mega st 4 keyboard) and the floppy drive doesn't initiate.
I tried different (tested working) ram, TOS roms (2.06, also tested working) and a replacement shifter chip (model B instead of D) but no cigar.
I wanted to do the same fix (wich was replacing the
) but I can't for the life of me find it on the board.74s257 74hct257 OR 74als257
Could be they are using a different but similar chip, but I don't know the location or the corresponding U/R/C + number.....
Does anybody know where the chip is and if it needs to be replaced, or is it another problem?
Please help me restore this mega ste!