Important Notice: Our web hosting provider recently started charging us for additional visits, which was unexpected. In response, we're seeking donations. Depending on the situation, we may explore different monetization options for our Community and Expert Contributors. It's crucial to provide more returns for their expertise and offer more Expert Validated Answers or AI Validated Answers. Learn more about our hosting issue here.

How Do You Repair Dell E152fpb LCD Monitor?

April 26, 2017Dell lcd monitor Repair repairs troubleshooting

0

Posted

How Do You Repair Dell E152fpb LCD Monitor?

1 Answer

0

Posted

The complaint for this DELL E152Fpb LCD Monitor was when switched on has power (LED lit) but no display. LCD Monitor is different from the CRT Monitor where you could feel the static at the front of the picture tube or hear the rushing sound from the high voltage produced by the flyback transformer. In LCD, if no display you wont be able to know if the inverter board is working or not unless you use an oscilloscope to point near the inverter board and the scope could display a waveform indicating the inverter board is functioning. A faulty main board may cause no display problem in LCD Monitor. If there is a problem in the main board, it would not send a on (enable) signal to the soft start circuit and no voltage will flow to the inverter IC thus no waveform produce by the high voltage transformer. In the above case, after the cover was removed, the first thing I check was the vcc (supply voltage) to the inverter IC. This model is using the famous TL1451ACN Pulse width modulation (PWM)