Question about Philips Magnavox 51MP392H Rear Projection Television

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Sony bravia screen flickering

The picture flickers or flashes but the tv is brand new what could be causing this?

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  • cardiff81 Jan 06, 2009

    I have the same problem. My bravia is a 19" and is connected to my desktop as my monitor. Any ideas what is causing this?

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5 Suggested Answers

jomaru
  • 337 Answers

SOURCE: Flickering Picture?

Your set might have a high voltage leak and that is the noise you hear when is showing the screen problem or even maybe an arking too ,either one is related to the high voltage and it can be dangerous,if you are familiar with tv service you can try to see where is arking and replace the part with an exact replacement but if the set has a leak you will not see it and is not safe to be close to it,if you are not too familiar be safe and call for assistance from a servicer.

Posted on Oct 27, 2006

leorcid
  • 281 Answers

SOURCE: tv repair

You don't have to buy a new tv, it is a fairly simple problem, your vertical ic is blown, and it could be the powersupply to the vertical ic also. To verify, slightly increase the screen voltage, and a horizontal line will appear on the screen, if the voltages is okay, change the ic, but first try resoldering the ic pins. Good luck

Posted on Jan 24, 2008

  • 476 Answers

SOURCE: Flicker on playback

Could be tracking, dirty / faulty heads, or mis-alligned guide rollers.

First,adjust the tracking on the player during playback. This is done by pressing P+ or P- on the remote control.

If this doesn't work, use a video head cleaner. This consists of a video cassette and fluid. Follow the instructions with the cleaner.

If this still doesn't help, and you are confident in opening up the VR550, you could cleaner the heads manually.

Disconnect from the mains.

Remove the screws from the back and sides of the VCR.
Gently ease the lid off the machine.
Locate the large silver coloured head drum towards the back of the machine. There are four small receptors around the side of the drum. These are the video heads.
Take a small piece of clean white paper about 1.5 inches square. (Copier paper)
Hold the paper square over 1 finger and rub each head in turn. Keep the head near the centre of the paper so as not to catch the heads with the edges of the paper.
Check the paper for dirt from the heads.
Reconnect the player and try a tape. If the problem is still there, try cleaning again.

If none of this works, insert a tape NOT recorded on this machine (Mis-alligned rollers affect recording as well as playback) and play. Locate the rollers which guide the tape around the mechanism. Particulary either side of the head drum.

The rollers have adjustments on the top, which can be turned to move the guide up and down slightly. This is a fiddly job, and over adjustment could cause the tape edge to be damaged.
Adjust the rollers to get a clear picture. It is mainly trial and error.


If all fails then the video is probably destined for the skip.

If you need a replacement, www.cheapestelectrical.co.uk , will sell you a VR550 at a very good price.

Posted on Apr 11, 2008

imran_usa9
  • 13 Answers

SOURCE: Philips 190B - flickering screen

Its looks that Inverter board not work well for CCFL cus a CCFL inverter is a device (an inverter) for providing drive power to a Cold Cathode Fluorescent Lamp CCFL

Posted on Jun 17, 2009

  • 187 Answers

SOURCE: FLICKERING PICTURE

Check power supply for the 24Volts connected to the backlight inverter ,bad caps could be the fault

Posted on Jul 20, 2009

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32nx500 Sony bravia TV flickering issue. if any one have any idea about how to resolve the issue.


Flickering can be adjusted. http://electronicshelponline.blogspot.com/ Visit the site linked here to know more. Search the site by type in the brand name of your device in the search box at the top right of the display window to get gathered all the related posts.

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Fault with the main power supply regulator board. Ubnormal DC voltage output from it. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/
It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and precious time.

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If your LCD TV or monitor has stopped working, or is displaying one of the following symptoms, then it's a candidate for some new capacitors
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- Screen image disappears after several seconds
- Dim screen
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- Unusual colors and/or lines
The primary cause of LCD TV and monitor failure is caused by faulty capacitors. You can examine the capacitors in your LCD TV or monitor and actually see if they are bad.
If they appear bulged on top, then they need to be replaced.
New capacitors will solve a host of problems in LCD monitors and TV's and will extend the life of your monitor or TV by several years.
Check the cables, connectors and connections.
Take it to a repair shop.

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1 Answer

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1 Answer

New sony tv screen flickers. other tv's in house ok. could it be the cable box?


check the following
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FLICKERING PICTURE


Check power supply for the 24Volts connected to the backlight inverter ,bad caps could be the fault

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alo all..

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