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Philips bdm4065uc Monitor

When the monitor is turned on it shows a blue welcome screen, just a little bit dimmer that normal. The backlight is on. After few seconds the screen turns off and the backlight is off. I managed one time to see the no input message before it turned off. What I need to do is to validate if the LEDs or the PSU is broken. Can I apply 42V directly on the wires to the LEDs from the PSU? Disconnecting them first of course. And thus validating if the LEDs are ok. All voltages on PSU measures ok, except the +VLED and -VLED. The +VLED on = 42,5V and off = 27,3V the -VLED is on = 0V and off = 9V. Is the LedDriver on these PSU board known to fail? PSU board no: 715G6985-P01-000-002R Led Driver: TPV101D Are there any known issues with capacitors on this PSU board?

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5 Suggested Answers

Anonymous

  • 624 Answers

SOURCE: My monitor says "input ......" and then the screen flashes off.

This is a duplicate post, click the following link to read the active posting: http://www.fixya.com/support/t138012-sony_sdm_hs74p_s_17_monitor_stay_right

Posted on Mar 16, 2007

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bammbammfran

Fran Bednar

  • 159 Answers

SOURCE: RE:monitor goes black

Monitor going black after a few seconds can be causd by a faulty power supply or inverter. Some monitors have both as one unit.
Sometimes it is basic failed capacitors, After that then I would look at transistors.
The average monitor from 17 to 20 and sometimes the 22s have usually 4 bulbs in them. One bad bulb will also cause the inverter to not fire up.
Bad bulbs usually show pinkish tint, or flickering or are dark at center top or bottom of the display.
ebays bammbammfran

Posted on Oct 05, 2008

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Anonymous

  • 1 Answer

SOURCE: BenQ FP51g LCD monitor

Dear Friend:
There is a Switch transistor to power on -off the hi voltaje for lights. Check 15V from power source go to this transistor colector, Using soldering Iron, make a juntion between colector and emiter, to short 15V to Hi voltaje power. I´m fixing 10 monitor the same trouble. I will remove a liter transistor.
Late I will post here the driver transistor number, and the replace number transistor I will use.
Pictures , etc. Best Regard

Posted on Oct 25, 2008

amit goswami

  • 55 Answers

SOURCE: Screen shows message "no input signal" and monitor goes to sleep.

monitor show "no input singnal" error masage when not gating any type of video singnal ,
so if u realy check your monitor wires for correctty plugged in .
then:-

Two possibilities:

either the video/mainboard of the monitor is defective; or
the video card/ CPU is the faulty.

A way to verify is to try the PC with another monitor or to try the monitor in another PC.

thanks

Posted on Apr 30, 2009

John Cunningham

  • 6771 Answers

SOURCE: Samsung's LCD monitor SyncMaster 740N; backlight

There is a inverter transformer on the board that may be defective that generates the high voltage that drives the lamp, you may end up having to replace the whole inverter board to get it working again.

Posted on Jan 26, 2011

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How to lock / unlock a channel in Philips TV? Press the 'MENU' button. Press the cursor right. Press cursor down to select CHANNELS. Press cursor right. Press cursor down to select CHANNEL LOCK. If the PIN code is correct, the channel list reappears. Select the channel with the cursor up/down and press the 'OK' button ...

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