I dug out a 740n LCD with IP-35135B PSU, which I had stored away. I knew I had taken out the lamps but turns out that PSU is faulty too. I just tested it with CCFL-s which are in 100% working condition. They turn off after a second.
I tested transformers´ (TM-1222) secondaries, which were 1300 and 1306 ohms.
All caps are replaced.
I even noticed I had replaced previous mosfets with a couple of new ones.
Without any load, 5V rail reads 5.2V and 13V rail reads 18.3V.
I even randomly checked diodes for shortages - all OK
Is there anything else I should check?
I tested transformers´ (TM-1222) secondaries, which were 1300 and 1306 ohms.
All caps are replaced.
I even noticed I had replaced previous mosfets with a couple of new ones.
Without any load, 5V rail reads 5.2V and 13V rail reads 18.3V.
I even randomly checked diodes for shortages - all OK
Is there anything else I should check?