Have a STTNG that i picked up non working - the DMD did not work, and found the 60V section out on the DMD driver board - so i repaired the HV section, and put another (old with some lines missing) display in the machine and it worked for 10 mins or so, then the display died. Tested the voltages and the 60V was out again (was reading 0)!
So i send the DMD driver away to a tech, and he rebuilt it again (i thought my repairs must have been dodgy), put the newly repaired board in, worked for 10 mins again, then the display was dead - could smell a slight hot smell and the resistor for the 60V section on dmd driver board was really hot.
I am at a bit of a loss - could the display be causing the issue and taking out the 60V section of the DMD driver board? I tested the transformer without it plugged into anything and left it on for 20 mins - the purple pair of wires going to the DMD driver board stayed stable at around 109VAC, and the white pair 87VAC. So i am assuming its not something funny with the transformer putting out too high voltages.
Is there anything else to test or check (voltages, power driver board?) before putting a different display in there - i don't want to keep killing DMD driver boards!!