They had the misfortune of new mot software that was made for 10 yo 8080, 286 or whatever with an old IBM keyboard so you had to know what the new keyboard keystrokes were that could march you through the software.? Had to be DOS on a 486 or older in low memory with a BIOS switch to make the processor slow.? Haven't done it since the 90s so dont know where the cable went...? Schematic is on Batboard.
?
Rebuilt a lot of PAs on them.? Like Maxtrac with a goofy heat sink glued on with a pound of Wakefield.? The Hi power brick would eat the driver, so best to go with the medium power ones and try not to rag-chew it to death.
?
Good luck with the chips.
