Question about Dell E171FPb 17" Flat Panel LCD Monitor

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Display goes black after 5 minutes

Checked your suggestion re. shine light on front of LCD screen but do not see an image. If I turn monitor off and back on the display comes back just fine for a short time. When I try the Dell diagnostic (video cable removed from computer and turn on, the pattern displays but it too eventually goes away after 5 or more minutes). Any suggestions on what part to replace appreciated.

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Repairing the DELL E171Fpc LCD Monitor with the complaint of display shutdown after few seconds (power LED still on) was not difficult. Normally when this type of problem happens, we would first suspect the inverter board, then the filter capacitors and lastly the main board. A defective in one of the lamps and a faulty TL1451AC PWM IC or inverter ic may caused the display to shutdown as well. If the lamp is defective, it will send a feedback to pin 3 or 14 of TL1451AC IC and caused it to stop producing output signal thus the display just shut off once you switch it on.

Posted on Jun 02, 2007


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