RCA P52939 52" Rear Projection Television Logo

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Question about RCA P52939 52" Rear Projection Television

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How to adjust projection tv

Picture is bowed at top &bottom,have the back off a guy said ther are adjustments that can be made,were?,my son was jumping in front of it and picture edges are bowed,verry dusty inside on the lenses,vacumed all the dust &cleaned the lenses,anything else i can do to fix?

Posted by Reuben Hughes on

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5 Related Answers

Slinteriors

Sonny Berry

  • 8617 Answers

SOURCE: rca projection

Conversion problem most likely. Do your conversion controls work both colors in all 4 directions.

Posted on Jan 04, 2008

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Anonymous

  • 206 Answers

SOURCE: RCA P61940 PROJECTION TV

No adjustment will fix this, what has happened is a power supply board for the convergance has failed and needs to be replaced or repaired

Posted on Mar 07, 2008

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Anonymous

  • 10594 Answers

SOURCE: Help with RCA projection TV P46812BL (chasis ptk195AA)

Hi,
your tv requires STK730-020 quantity 02 and you can replace it yourself if you know soldering well.
If you wanna replace complete convergence board, its available Part Store and price is $119
Regards,

Posted on Sep 13, 2008

Anonymous

  • 5138 Answers

SOURCE: I have a 53 in. sony projection tv,. bowed picture tubes?!?

Replace Both STK convergence ICs will have part number on them STK392-560 use same part number on your STKs. Also around ICs ck pico fuses 5/6amps they are green or yellow.

Posted on Jan 08, 2009

Anonymous

  • 1112 Answers

SOURCE: 55 inch mitsubishi rear projection tv red lamp out of adjustment

Have convergence IC's replaced. I believe this unit uses STK-392-570 convergence IC's Only one has gone bad but replace them both, because if one has failed then the other is not far behind, for Blue and Green. One handles Red, One handles BLUE and Grn. There are only two of them in the set, They are the two largest IC's in the entire set.

Posted on Oct 01, 2009

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There is a wave/bow in the bottom and top of the picture on the screen of my Toshiba 70HX50. When I am in the grid screen in the service mode, it looks like the center is 'bowed' out. How do I adjust this...

Slight error in the alignment of a projection TV is pretty much normal. If the problem cannot be seen on a normal TV picture, I would not spend the money.
However, if the problem is severe and causes colour double images, it is convergence and will need parts replaced - about $200-$600 depending on service call, parts, labour, etc.
Minor adjustment takes a skilled technician. attempting it yourself will likely cause the set to stop functioning. (Digital adjustment is not forgiving)
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Screen is bowed on top and bottom. What could be our problem? Picture, letters & words blurry.

go to hatch screen adjust all colrs to make white color boxes , also adjusts linear lines
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The screen looks out of focus and the top and botton bend inward.

Remove front bottom panel behind it is a small black control box top controls are focus controls for R/G/B and Bottom 3 controls are your screen drives adjust one at a time turn off G/B adjust red first,then Do Green and Blue fter adjusting focu to each tube leave them set then adjust screen drive turn color off adjust RGB for a Black and white picture get as close as you can then turn color back If after doing this you still have blurry looking picture look down into Tubes you should be able to see picture clearly in each one if you cannot see picture then projection Fluid need to be changed out. Call Mats 1-800-628-1118.
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http://www.fixya.com/support/t1663670-akai_samsung_pt4299hd_convergence Adjust the convergence manually. It's a pain and takes alot of patience. The diagram for the remote buttons helps a lot. If it won't adjust you'll have to replace a part inside the tv. Good luck! Hopefully it'll adjust.
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RCA P61940 PROJECTION TV

No adjustment will fix this, what has happened is a power supply board for the convergance has failed and needs to be replaced or repaired
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Problem with convergence

bad convergence ic's
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html
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Hitachi 61SDX01B picture...

Sounds like the blue convergence circuit still not working.

Assuming both IC's are good, look for open soldered-in pico fuse.

Once bowing problem is solved,then convergence should adjust ok.     

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