- Jan 30, 2010
- 3
- 0
- 18,510
I have 4 lcd monitors NEC LCD1550v is the model number, one works fine and three do not power on they instead have a quickly flashing power LED and no other symptoms. I know from exchanging the boards that all 4 work fine save for three of the PSU's this is my problem- these PSU's are not really Physically damages in any visible way and are not replaceable so repair is seeming grim. I have gone over them with the multimeter a great number of times looking for a difference between the one working board and the other three. All I have really found is that the non working boards seem to have slightly lower readings all the way around as far as resistors and capacitors but nothing jumping out as bad. There are some component i can not seem to get a reading on either board and seem to be the likely culprit how ever i can not test to be sure and i am not sure how to test the transformers. I am really new to this but im a quick learner, also very dedicated and i have accrued many broken lcd monitors and will not stop until they are mostly all fixed. Solving this one would be a tremendous help as i am struggling financially and will not sell the working one until the other three are fixed. Posted are two pictures one of the monitors and the other of the board, circled in yellow are some of the components i can not test. Any pointers or help of any kind is super appreciated, Thank you
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