Question about RCA TruFlat 27F520T 27" TV

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My 29" LG golden eye T.v is view pictures in concave

The telly is only viewing pictures at the center with the sides gone pitch black and the little that is seen is in concave shape

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Thyere is a fault in the horizontal stage or supply, I suggest Horizontal, if electronically minded check capacitors around the HO stage, could also be a ceramic cap....Phil

Posted on May 19, 2009

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I have a panasonic pt-53wx54 picture went black with a view vertical color lines then they went and it's now just black. sound is good no picture.. what do i need to do? thanks so much


This is one of several models that had a common problem.

If set comes on with sound and you after a minute or two see a faint odd band of noise top to bottom on the screen to the right side C509 which is a .047 cap at 200 volts is bad.

Cap is seen in attached photo(location marked and cap here gone).

The cap when you locate it from the C509 number which is on top and bottom of board may have a crack or not---it is the cause of this problem.

There is a hard way and a easy way to get at it--let me know and I will explain.

3.00 part....................


4_20_2012_7_24_56_pm.jpg
Pencil is point to location on Right side board seen from right side.


4_20_2012_7_26_02_pm.jpg

There are several brown caps here and some plugs here are removed.

I would not try operation of the set in this condition too long.

Apr 20, 2012 | Panasonic PT-53WX54 53" Rear Projection...

1 Answer

THE PICTURE HOUR GLASSES IN SHAPE


Your symptom sounds like a damaged component in the pincushion circuit.

If your colors line up in the middle of the set and at the top but the picture is concave then you may have a faulty component in the pincushion circuit. When this circuit fails the picture will have an hourglass shape to it with black in the middle on the sides, or you will see square objects as hourglass shapes.

I would recommend that you have a local service center diagnose the set for you and give you an estimate of the repair.
I have seen this type of repair run from $250.00 - $350.00.

I hope this information allows you to resolve this issue.
If I have helped you, please help me, and rate this suggestion the highest FixYa rating. (Two Thumbs Up)
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If you need further assistance please comment to this post and I will try to help you further.

Jul 09, 2009 | Mitsubishi WT-42311 42" Rear Projection...

1 Answer

I have a problem with my Tv pt-47wx42


Your symptoms sounds like a damaged convergence IC.

There are two and sometimes three very large IC’s that control the convergence in a big screen set. They are secured to a very large aluminum heat sink.

If your colors line up in the middle of the set and at the top but the picture is concave then you may have a faulty component in the pincushion circuit. When this circuit fails the picture will have an hourglass shape to it with black in the middle on the sides, or you will see square objects as hourglass shapes. If it is like you described and it is in the top and bottom, you may have a problem in the top and bottom pincushion circuit.

You stated that the charge will be $80.00 to diagnose this problem, I would ask if the diagnostic applies to the repair, if you choose to repair the set.
I have seen this type of repair run from $250.00 - $350.00.

If one of the convergence IC’s are found to be bad, I would replace them both, if one has gone bad the other may go soon and it should only add the cost of the part to the repair.

I hope this information allows you to resolve this issue.
If I have helped you, please help me, and rate this suggestion the highest FixYa rating. (Two Thumbs Up)
Please Note: If you cannot rate this post with the highest rating, then please do not leave any rating. I am doing this for free and I do not think that any rating other that the best is needed.
If you need further assistance please comment to this post and I will try to help you further.

Jul 07, 2009 | Panasonic PT-47WX53 47" Rear Projection...

1 Answer

Picture shows down the middle--both sides are black


may just need servicing, adjustment of the picture shape like parallel, etc service man can do it, its impossible for us to help.

or the high voltage is bad

Mar 29, 2009 | Akai LCT2715 27 in. LCD Television

1 Answer

Picture in concave on all sides and blue and red are off


The shape of the picture indicates that the convergence circuit is not working properly. Generally speaking this occurs without making any sound at all. The popping you heard may have been a capacitor in the power supply. If the power line effected supplied the convergence circuit, repairing the supply should return the set to normal. If not, then the convergence ICs may be faulty. If you can solder, and are confortable working inside the set where potentially dangerous high voltages exist (even when unplugged), you may be able to repeir this yourself.

Let me know and I'll provide additional details and instructions.

Dan

Jan 27, 2009 | RCA P52960 52" Rear Projection Television

1 Answer

Mitsubishi 55" 1080HD


it sounds as though your convergence board is going out or gone out

Oct 23, 2008 | Mitsubishi WS-55613 55" Rear Projection...

1 Answer

No Picture


Rarely picture tube also shows the same symptom. High pitch sound is due to through deflection area LOT power supply is loaded. Compulsary horizontal output transister short. From your statement i think Lot puncture takes place. Change LOT and horizontal output transister and check tv is now working.

Aug 23, 2007 | Zenith A32B86R 32" TV

1 Answer

Screen Image is Concave


sony trinitron colour 29ins tv its black and white not colour but the teletext is colour

Sep 01, 2006 | Sony FD Trinitron WEGA KV-27FS100 27" TV

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