Dell monitor E153FPF no power

[String2016]

Hi everyone i need help this is the first time im repairing desktop computer monitor the problem with this dell E153fpf is suddenly goes off and cannot turn on anymore there is no light so i took off and open i found beeping on big capacitor and also the mosfet 9960d beeping on s2 to drain and s3 to drain s1 to drain is ok no beeping.anyone can help guide me to repair this please

[SEAWOLF]

Re: Dell monitor E153FPF no power

Hi everyone i need help this is the first time im repairing desktop computer monitor the problem with this dell E153fpf is suddenly goes off and cannot turn on anymore there is no light so i took off and open i found beeping on big capacitor and also the mosfet 9960d beeping on s2 to drain and s3 to drain s1 to drain is ok no beeping.anyone can help guide me to repair this please

I also have a Dell E153fpf monitor which my brother gave me a few days ago
and does not power on .I have checked the fuse,capacitors,resistors,mosfet and
diodes and they have all tested ok.I have plugged the board into the AC outlet
and there is DC at various points of the power supply.I am also searching for a
service manual.

[budm]

Re: Dell monitor E153FPF no power

Mount the board back in place, DC Volt meter Black lead on the chassis, the use red probe to measure each pin of that white connector with Black wires and one red wire, tell us what the Voltages are.
I also need the straight shot picture of the board, and pictures showing how all the board are connected together since there are more than one version of this model.
BTW, beeping really does not mean much, the resistance reading is more important.

[CapLeaker]

Re: Dell monitor E153FPF no power

Also reseat that socketed IC next to the big filter cap.

[buddacedcc]

Hi,
I have same issue with this monitor..during normal usage switch off and never switch on by power button. Eye analysis is ok, no components damaged or burned. Checked just the diode with multimeter and are all ok. Suggestion ?