Hi,
I'm trying to repair an oscilloscope of type: pm3335/60Mhz. If i switch the power on, only the lcd display shows settings. crt screen stays dark. I've tried to measure the power supply output. All voltages seem ok, except for the EHT output. Instad of -2,1 kV i measure -1,8 Kv dc. (10 resistors of 1Meg in series trick)
At the input of the voltage multiplier i measure 0 ac. (also before c6209)
Test point X49 (input of transformer T6201) shows correct voltage signal.
T6201 measures 13 ohms between 6 & 11, 43 ohms between 6 & 12.
Anyone an idea what to try next ?
Regards,
Hans