Question about Panasonic PT-53WX54 53" Rear Projection HDTV

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Pincushion(concave top and bottom) on Green Tube

Hey guys awesome site. My TV has a PIncushion at the top and bottom of the Green Tube. Is there a way to adjust this or is some part fried? If its a fried part where can I order a new one and what would I need? Seems like the IC chips need to be replaced from reading other posts, but I don't want to put words into anyone mouth. Thanks for reading.

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Re: Pincushion(concave top and bottom) on Green Tube

You need to replace the ic chips aka convergence amps stk's avail thru parts John

Posted on Sep 11, 2007

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I was given a P52960 ,2002 rca 52 projection tv and the sides of the piture are concaved in.Can this be fixed easy enough,i am good with electronics/wireing..iI was told by the old owner that the solu

concave or bloated pictures on crt projection tv's are corrected with what's called a 'pincushion' adjustment. Look for it in the menu under video controls.

Dec 22, 2012 | RCA P52960 52" Rear Projection Television

2 Answers

My screen image is concave, like a funhouse mirror. The image is distorted at the top and bottom of the screen. Any suggestions?

it is called pincushion circuit. either the diode went bad, the capacitors, or just maybe a simple solderond the bad connections.

Nov 17, 2009 | RCA D52W20 52" Rear Projection HDTV-Ready...

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Big Screen Projection receiver TV vertical pincushion problem

the aliment is out need a profession to adjust it for you

Jul 24, 2009 | Projection Televisions

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My rear projection 51mp392h has color distortion on the bottom third of the screen,it curves up in the middle. Is this a picture tube

Hello tj444,

This is not a picture tube problem. This could be what is called pincushion distortion. It is caused when the is a malfunction in the deflection coils and the inability to correct for the curvatures caused by the CRT. The pincushion distortion can also be caused by the degradation of the functionality of the convergence amplifiers in the TV set. I would suggest that you have a TV technician examine the deflection circuitry and the pincushion circuit, this would also include the convergence amplifiers.

I hope this helps,

Thank you,


Jul 12, 2009 | Philips Magnavox 51MP392H Rear Projection...

1 Answer

Tv picture looks warped

I am Vortash this is a problem we call pincushion where the picture appears bowed or concave . It is a fault associated with convergence problems also green or red lines around people and objects if this is the case on your set try your manual and look up the proceadure for the auto convergence , if you do not have a manual try downloading one from for free most likely but there are a few of the more later models they charge for hope this helps regards Vortash

Jun 08, 2009 | Mitsubishi WS-55511 55" Rear Projection...

1 Answer

Hitachi 50gx30B Pincushion problem

Please let me know in which direction the picture is distorted. Does it bow in from the top and bottom or left and right?


Mar 06, 2009 | Hitachi 50GX30B 50". Rear Projection...

1 Answer


you probably need to adjust the setting for " pincushion "

Apr 03, 2008 | Projection Televisions

1 Answer

Sony Wide Screen Projection TV 46"

Can you post a picture of what the screen looks like? It could be convergence amps or a pincushion problem. The pic would help clarify the diagnosis.

Feb 26, 2008 | Sony KP-46WT500 46" Rear Projection...

1 Answer

Blue pincushion

Shannon you have a blue convergence failure. this problem can be repaired in home, by a good tv repair guy. John

Sep 11, 2007 | Sony KP-51HW40 51" Rear Projection...

2 Answers

Pincushion Picture on a big TV screen!!!

The set has 3 IC's(one for each color)strictly dedicated for the aligment of each color,if one them does not align is because is going bad or is already bad becuase picture can not be adjusted,the IC's can be identify because they are mounted on a heat sink and have the markings STK--- ---,they are all the same and need to be replaced with an exact replacement.If you are familiar with tv service you can replace them,sometimes the new ones need to be aligned from the service menu,you will need the service manual,soldering and unsoldering will be involved,If you are not too familiar be safe and seek the assistance of a servicer.

Nov 03, 2006 | Sony KP-46WT500 46" Rear Projection...

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