Question about Mitsubishi WS-55809 55" Rear Projection Television

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Middle of screen pic is concaved - Mitsubishi WS-55809 55" Rear Projection Television

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Replace the convergence ics.

Posted on Jul 18, 2009

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Posted on Jan 02, 2017

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My Mits tv has sound no picture ! 3 concave lines,almost like a bowtie in middle of the screen red,green,blue. Please help ???


I would look for dry joints and poor plug socket connections around the line output section.
Mind your fingers!!!!!

Apr 17, 2011 | Televison & Video

1 Answer

My 57hx81 has a slight concave bow in the middle top to bottom


Sounds like a problem in the vertical sweep circuit. Check voltages to your convergence ICs. If they are  not to spec then look for bad fuses and capacitors on the power board. These will throw off the DC voltage to the convergence chips causing the bow effect. I've had a single bad pico fuse ($1) cause this symptom. 

Dec 06, 2009 | Toshiba 57HX81 57" Rear Projection...

1 Answer

Concave picture


sounds like the bulb is on its way out, they can be replaced for about 100 bucks.

Jul 25, 2009 | Philips 51PW9303 51" Rear Projection...

1 Answer

Picture on projection screen is concave in the middle


This set does not use IC's for convergence. Most other brands do use IC's.They use individual transistors in this one and honestly I don't remember ever seeing these go bad. Normally it is the power supply that runs the convergence transistors or more commonly known as the convergence board. It gets pretty technical with this type of problem. Have a repair shop check it out for you and avoid the headache. Thanks

Jun 07, 2009 | RCA P61939 61" Rear Projection Television

1 Answer

RCA P61960 Picture is concaved


this is the conversion chip or sometimes chips that cause these effects the chip or chips are about $30 each but labor is alot more $250 -$300

Oct 18, 2008 | RCA P61960 61" Rear Projection Television

1 Answer

Green on screen


try to do it inside the board.
there are some adjustments except brightness and focusing..
try if you can ...


regards,

Aug 10, 2008 | Mitsubishi WS-65511 65" Rear Projection...

1 Answer

Red Blue and Green colors are not aligned and looks concave


replace fuse looks like cap next to flyback transfomer FL231 it will be the one in the middle.there are 3 of them next to FBT.

May 28, 2008 | RCA D52W19 52" Rear Projection Television

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

52 rca concave pic and bad colors


concave and colors off indicate the convergence cuircit is bad. which can be one of three boards. sorry

Dec 08, 2007 | RCA HD52W56 52" Rear Projection HDTV

1 Answer

Convergence?


Circuit board with STK convergence IC's must come out .....
Replace both IC's, reassemble...test........................
IC's mounted on large heatsinks.............T.

Nov 28, 2007 | Sony KP-57WS500 57" Rear Projection...

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