Question about RCA P52960 52" Rear Projection Television

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P52927 focus and screen module

I have isolated my problem to a part no one has ever heard of, the"focus screen module". It is a box with 6 turnable knobs that focus the image on the RCA projection TV. the part has a S3 location#(supposedly) and is located under front speaker screen behind front access panel which is between front speakers. Once access panel is off it is on righthand side. can someone tell me where I can get replacement or interchangeable? part# on sticker attached to mounting surface with diagram is 15165410. An internet company said 15414390.
the TV'scomplete service # is p52927yx10 Thanx in advance

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Posted on Jan 11, 2009

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1 Answer

How to adjust the lens-focus?


the lens has a wingnut knob on it, loosen the nut and then rotate the thing to focus in and out. there is also an electical focus in the front of the tv, there is a little black box called a focus block, 6 knobs , 3 focuses for each tube, 3 drive controls (screens).. dont turn the screens, just the focus for the color needed.. look closely they are labeled its just hard to see
the front should pop off, remove what screws you can find, the rest are snaps.. really tough ones.. let me know if you need further assistance.

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1 Answer

Sony kp-57HW40, screen flickers with blue tint, then shuts off


The problem with you set is: focus block and(or) intermittent G1 short in a blue CRT(picture tube). To determine the tube failure, you must take front panel off, rectangular cover under it and gain access to CRTs. You will see 3 picture tubes with wiring and boards attached to them. on a bootom of the set there is a black plastic box with 2 rows of 3 potentiometers on it.one raw is for the focuses, the other one is for the screen controls. it will be written on the box with letters R.G.B. first: take a light isolated handle screwdriver and tap very slightly on the neck of the right tube. Do not brake the glass! That's the blue CRT. It might have a blue color sticker on it or blue socket. Tv must be on and running, while you perform the test.If your tapping on the neck makes blue flashing, your CRT is bad, if not, try to play with blue "screen" potentiometer by turning left and right, slightly. If that will cause the blue flashes and hard to adjust, replace the unit.
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Jul 12, 2009 | Sony KP-57WS500 57" Rear Projection...

1 Answer

Double focused, red and green, bow in picture top and bottom


hi
You have a convergence problem
If the set has auto focus and will not complete its cycle.
The Auto focus module is bad, (expensive)
If it completes and the problem is still there.
Then check for bad conv. drivers (stk****) or cold solder joint on one or more of the 3 drivers pins.
Guy9

Jul 08, 2008 | Hitachi 65S700 65" Rear Projection HDTV

1 Answer

RCA model P52927


Look, take out back cover and on the bottom left and right side you will see screw (2 or 4), take out it,Disconnect 2 plugs wire from chasis, pull out the box and you will have space for clean your screen.( You will take out all box with main chasis, convergence chasis )

Apr 22, 2008 | RCA P52926 52" Rear Projection Television

2 Answers

RCA model P52927


let me get some info how to get the screen off and I' get back to you... e-mail me networks@q.com

Mar 23, 2008 | RCA P52926 52" Rear Projection Television

1 Answer

Thin red horizontal lines across screen


replace the focus block or try to adjust the screen control on the focus block for red only. this will affect the white balance of the set so adjust it carefully. the focus block is located on the front inside the set. remove the speaker cover then the 4 screws on the front plate. the focus block is 3" x 2" black box with 6 adjustment posts three for focus and three for screen. adjust only the affected screen (R).

Mar 13, 2008 | Sony Grand WEGA KDP-57XBR2 57" Rear...

1 Answer

RCA projection tv Model # P52927


You need to re-solder the circuit board that contains the STK convergence modules. They're on the center circuit board attached to an aluminum heat sink that's about 8" long and 6" tall, about dead center in the circuit board. You may be able to recreate the problem (hour glass effect) by gently moving the heat sink (which the modules are connected to). This gives the hour glass effect on the picture and the advanced convergence screen. This is an indication that the modules pins aren't solidly connected (meaning soldered) properly. Remove the circuit board and clean the old solder off & resolder the modules pins to the circuit board reconnected the board and then retest by again pushing on the heat sink. This is a caused by a minimum effort (a.k.a. minimum cost) solder job, probably done in some 3rd world sweat shop. The "factory" job was good enough for 3-4 years but the heat (and these modules do create a lot of heat) and stress created from repeated use eventually takes it's toll, weakens the pin connections and our problem occurs. take the appropriate cautions working around the high voltage of the set & use a non-conduting piece of wood to push the heat sink when we doing tests. Best of luck, hope ya fix it.

Jan 03, 2008 | RCA P52939 52" Rear Projection Television

2 Answers

Color misaligned in RCA P52927


Hi,sounds like the convergence power supply reg.has failed,when this ic fails the adj. projection tv leaves the menu,this ic is located on the board above the board with 6 heat sinks on it mounted on the black plastic,its the ic that is heawt sinked on this board,part number is 215530

Nov 06, 2007 | RCA P52926 52" Rear Projection Television

1 Answer

Focus/Screen block bad


This part is called the Focus Block and has 6 controls, 3 for focus and 3 for screen. The screen is the overall brightness of the CRT and the focus is the sharpness. The part can be ordered by description from any RCA parts distributor but the controls should be set by someone with experience.

Jun 26, 2007 | GE D52GW12 52" Rear Projection HDTV-Ready...

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