Question about Insignia 15 in. Flat Panel LCD HDTV

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Schematic pointing to a video sync pulse out for the above tv.

I am looking for the schematics for this 15" Insignia TV to find a video sync pulse that I can use with a video sync sensor for on and off status tests for a IR control system. This monitor does not have a video monitor out and I am looking for the equivalent on board schematic to make this connection happen. This is not a voltage sensor, this is a video sync sensor, and no it does not work on voltage as I have already tried it...

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I dont know if they will have what you are looking for but try: www.eserviceinfo.com you might find it there. By the way why not use an oscilloscope? Good luck in your search.

Posted on Oct 03, 2008

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Where can I get a TV schematic for Insignia NS32D200NA14 ?


If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
Power supply schematics to many popular brand TVs and others are illustrated.

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Where can i find a TV schematic for Insignia NS32D200NA14


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I have a Samsung 55 in LCD tv that keeps powering on & off. I checked the caps & they look good and have the higher voltage rating of 25 volts not 12 volts. Any idea what the issue could be?


The capacitors can fail and show no outward signs. You need a special meter to check them. Without a schematic and voltage test points it would be hit and miss trying to find the bad part without the right test equipment.

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How to repair the tv if it no power


First take the back off and look for blown fuses; fuse should be on the circuit board close to where the AC cord attaches.
If that doesn't work, you are to a point where you need a schematic and a voltmeter.
Most all TV's use pulse power supplies today and are difficult to repair.
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1 Answer

Tv picture looks grainy like it was shot on video


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1 Answer

Hey every one im looking for kdl-w40a12u sony bravia schematic diagrams, can anyone help me with that please.thanks a ton in advance


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2 Answers

Trouble shooting for dv3250lcd display


Hello raj ro,

The problem you have described is a possible problem in the RF/IF section before the video and audio are separated. I would check the tuner, and the signal into the IF/Video/Audio Processor. I say this because in most televisions now the IF, Video, and Audio are preprocessed through the same microprocessor with input from the tuner or some sort of amplifier after the tuner. Check the output of the processor to the various stages Video, Audio, Sync, etc. In addition to this check the DC bias voltages, and the signal waveforms on the processor also. This should lead you down the right path of solving this problem.

You will need:
  • a schematic diagram of the TV (To locate test points and signal)
  • a Digital Multimeter (To measure DC volts and test passive components)
  • an Oscilloscope (To measure waveforms)
  • a signal generator (To provide proper reference signals)
  • an Isolation AC power supply (To prevent shorting out the test equipment while testing the TV set)
These are the basic pieces of test equipment needed to do this type of troubleshooting.

If you do not feel you can do this please contact a qualified TV repair person to troubleshoot this problem.


I hope this helps
Thank you,
Shuttle83

Jan 19, 2008 | Flat Panel Televisions

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