Question about BenQ FP757 Monitor

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Power indicator is on, but there are not any signals on display, not responding on any of buttons on front panel either

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There are two places to look for the problems, the backlight inverter board and the power supply. Look at the power supply first since it is easier to get to, look for burnt parts, bad capacitors, etc.
http://en.wikipedia.org/wiki/Capacitor_plague
Please post back what you find.

Posted on Nov 14, 2009

  • Vytasas123 Mar 01, 2011

    there was 3A fuse burned. And one Inverter transistor (neares the voltage-up coil)

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SOURCE: SGI F180 Flat Panel Display no longer turns on.

If the power button does not stay on, the monitor might be burned out.

Posted on Aug 20, 2009

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Here's is what you need to look for when describing a problem for troubleshooting purposes:

0) What model is the TV (you've covered that)

1) Does the TV respond to command to turn on?
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2) Once it responds (clicks), does a front LED or other indication show that it turns on? It's OK if there's no display.

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Here is a link for test/repair of the power supply of your TV, hope it would help:

http://www.coppelltvrepair.com/p/895/samsung-pn58a550s1fxza-power-supply-repair-service-for-dead-or-clicking-on-and-off-problem

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Please perform the following steps:

1. Unplug the power cord from the unit.

2. Press and hold OK and Cancel buttons together while plugging in the power cord back to the unit.
3. Turn on the unit.

If the issue persists, please replace the unit. From my experience repairing coast HP OfficeJet 7310xi is almost equal to the coast of a new printer.

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If the power button does not stay on, the monitor might be burned out.

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Check the resolution in the Windows while connected to the old monitor. If greater than 1280 X 1024 and/or the refresh rate exceeds 75 Hz, the monitor may not respond. But you should at least see the BIOS splash when the computer is turned on. If that does not appear, maybe a problem has occurred in the monitor. Another indicator: if you turn the monitor power button off and then back on, you should get some sign of life such as "no signal", or "out of range". If nothing appears, that would indicate some problem within the monitor.

If you find my suggestions to be helpful, please share with us some details so that others may benefit from knowing the whole story. Thank you!

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