By 9lifes
Tue Feb 21, 2023 10:30 am
Since a few days the memory on my MPC-60 MK1 OS 3.10E has dropped down from 1.5Mb to 750Kb (26.2 to 13.1 sec).
I checked the 14256 DRAM IC's from the expansion by swapping them from expansion to the voice board. They all check out. I already checked continuity on all traces and looked for broken solder joints.
Can it be a faulty 74HC541P or 74hc125p ?
I checked the 14256 DRAM IC's from the expansion by swapping them from expansion to the voice board. They all check out. I already checked continuity on all traces and looked for broken solder joints.
Can it be a faulty 74HC541P or 74hc125p ?