Good morning, I have a problem with one dmd controller (Wpc 89).
The screen on dmd is Black.
In the past I have always bought kits at the various sites and they have always worked at the first shot.
Then I decided to buy the individual components on aliexpress.
I replaced all the components of the high voltage (mje, 2n,vary resistor, zener diode, etc) with components bought on aliexpress.
Result: The screen is Black.
The voltages, however, seem correct to me:
The first time I turn on, I have these values
-110v -98v 12v 4.95v 62v
After a few minutes
-114v -102v 12v 4.95v 66v
If I connect a pin2dmd to the controller I see everything correctly.
If I use another controller I see everything well on the dmd gas.
So there's something about high voltage that I can't figure out the problem, because everything seems ok. Any advice?
Can it be the poor quality of some component even if the values are correct?
Thank you!