Question about Toshiba 32AF43 32" TV

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Our 37" Toshiba has developed a concave picture

The picture is 'hourglass' shaped.

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This is called "pincushion distortion" and the circuit that is supposed to correct it is not working. This is often due to solder connections to some parts failing because of heat. It may also be caused by component failure. It is a problem that is not difficult to correct once the bad connections are repaired or parts replaced, and the cost of a repair would be far less than replacement cost.

Posted on Dec 19, 2008

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I own a Philips 34PW8502/37, The picture is hourglass shaped, the images "bow-in" on the left and right of the screen


You have an East/West error caused by an amplifier that "modifies" the frame pulse and modulates the line scan to compensate for a tupe that has not got a 90degree scan.
Follow the scan coil leads and there will be probable dry joints and the pcboard or a power IC that has failed.
Hope this helps but a service manual will be of great assistance to you.

Nov 12, 2010 | Philips 34PW8502 34" TV

1 Answer

Sometimes the picture looks caved in and the color isn't as good as it used to be also some times there is a shadow


Your symptoms sounds like a damaged or intermittent convergence IC.

There are two and 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 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.

You will want to get this symptom fixed before there is a complete failure of the convergence circuit, which may take out other components.

I hope this information allows you to resolve this issue.
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Sep 05, 2009 | Mitsubishi WS-55857 55" Rear Projection...

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Lines in upper lefthand corner


Your symptoms sounds like a damaged or intermittent convergence IC.

There are two and 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 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.

You will want to get this symptom fixed before there is a complete failure of the convergence circuit, which may take out other components.

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.

Sep 05, 2009 | Mitsubishi WS-55511 55" 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)
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 09, 2009 | Mitsubishi WT-42311 42" Rear Projection...

2 Answers

Toshiba 65h81


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 | Toshiba 65HX81 65" Rear Projection...

1 Answer

Picture is smaller, has hourglass shape, no sound


Took back off, removed control board and inspected for bad solder joints. found no obvious problem. Cleaned and reinstalled. Working ok now. I'm crossing my fingers.

Jan 27, 2009 | Philips Magnavox TS3260C 32" TV

1 Answer

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1 Answer

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Hello, Check and replace IC1606 (P/N: 875292571) and IC1608 (P/N: 875982987). Best regards, Arpi http://www.partstore.com/sl/2/418644-ic-cxp86448635q-875292571.html

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