Question about Philips 50PF9731D/37 50 in. Plasma Television

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No display on right side of picture


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Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
In some models of LCD TVS; the backlight inverter and its T'Con board will be a part of the panel itself, and will be a built-in type inside the LCD panel. If so, they can't be replaced. In this case; a panel replacement is the only repair. For some other models, the backlight inverter section circuit will be a part of the main power supply regulator [SMPS]. To such sets, the power supply section circuit too should trouble shoot. Contact any service technician. The circuit will differ with models and versions.

Posted on Apr 17, 2015

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This is an LCD television, you may find at the top of the LCD display a module referred to as a t-con module (timing control module).
There are usually two ribbon cables that make connection from the T-con to the display itself. Check these cables for corrosion or burn marks that might be preventing video passing from t-con the the display.

Posted on Apr 17, 2015


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Posted on Jan 02, 2017

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SOURCE: Picture problem

If the set is no longer under warranty, open up the back and reseat all of the connectors and cables. You are seeing a heat related connection problem. If it is still in warranty, bring it in for warranty repair. The other possibility is a heat related connection at the processing chip(s). This is a more complicated repair that should only be done by an experienced tech that works with surface mounted components.
Keep us posted.

Posted on Apr 23, 2008

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burn in run  a white screen

Posted on Jun 07, 2009

  • 1 Answer

SOURCE: 26PF9956/12

Take the back off the unit. There are 2 20 pin cables that go to a small board that sits on the right side (viewed from the rear) spray the back of the plugs with contact cleaner and wiggle these cables where they plug into the small board. 

Posted on Jul 20, 2009

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SOURCE: phillips tv model #42pf5321d/37 we replace the

You should have downloaded the eprom information onto a usb stick then transfered it back to the new board, or just removed the eprom off the old board onto the new. It is my recommendation to have an authorized service center come out and realign it within the factory service mode.

Posted on Dec 11, 2009

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SOURCE: no picture on left side of screen and bad picture on right side.


Have the Digital board and logic board replaced. the most common problem will be the logic board assembly. Altho the Digital board can also cause this problem. Try taking off the back and making sure the LVDS Cable is connected tightly to the logic board assembly and the panel, (Scrn), The LVDS Cable will look like a small wire harness with two metal clips on each end make sure it is secure, try disconnecting it and reconnecting it again.

Posted on Jan 13, 2010

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If you have tried using different input devices, looked for loose contacts
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Left side is dark and right side is good

The LCD sets use backlights and also a pair (some models combine both into one unit) of inverters- one drives left side and the other right side.

You could have a bad inverter (some versions call it T-con) or even a bad display panel(main screen unit).

In most cases this is not a do it yourself repair.

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I have this model and its been giving me probem with the picture coming on and if it came on only half the picture come on

It sounds like the inverter board for that side of set is bad(uses either one large or two small boards--if two small the one for that side is bad OR the main display panel itself is bad.

Seen more than a few of this brand come on with picture on one side and then the other side gets real bright for a few seconds and set shuts down.

Shutdown circuit will detect something is drawing a lot of current and shut set off.

This if the display panel itself is bad will not be worth fixing.

Some Plasma sets have same issue and use names like sustain board etc for the same function--they drive the display panel left side, right side or top and bottom.

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2 Answers

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