Sony KV-29FX66 29" TV Logo

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Jacob Kluger Posted on Sep 18, 2006
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Pincushion Picture My TV set had suddenly started to project a "pincushion" (concave sides) picture. The TV laboratory claims that the Flyback transformer and other parts should be replaced. My impression is that the lab estimation is exaggerated since, as far as I understand, when the Flyback fails, there is no HV supply to the CRT and there should be no picture at all. Please advise.

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  • Posted on Sep 18, 2006
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Joined: Aug 31, 2006
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Lets try something before you call for a second opinion,with the tv ON and the problem showing hit the top and side of the tv,if the picture somehow reacts or corrects itself when you hit it call someone else and tell them what the problem is and that you feel it has a loose conection,dont have to tell them about the first estimate. Dont hit the tv with a hammer,just with the palm of your hand.Is worth the try. Good luck.

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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.
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Occasionally the picture snaps into what looks like a pincushion.

it is infact pincushioning.. these tv's have a maze of boards.. try to contact manufactuer about pincushion pcb also try to auto converge colours if you can.
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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,

Shuttle83

http://www.electron-age-technologies-llc.com
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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 http://www.safemanuals.com for free most likely but there are a few of the more later models they charge for hope this helps regards Vortash
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Fault

you probably need to adjust the setting for " pincushion "
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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.
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too dangerous for a home repair as this requires replacement high voltage components and adjusting the set with the back off while running.
Take to repair store.
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RZ56Z83

The picture on my projection TV has intermittent concave right and left sides. Can you tell me what's wrong with it? your problem is due to pincushion ckt as it is intermittent so that there might loose contact or print break in pincushion ckt it can be rectified easily by skilled tech. there is no parts failure. good luck
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Pincushion Problems

check the cap that couple the horizontal transistor, this could be bad replace the flyback.all caps and transistors in that circuit should be cheked.good luck.
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