Question about Toshiba 53H71 53 in. Rear Projection Television

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Changed my stk 392 150 ( both ) did not correct problem - HELP!

I changed my stk 392 150 both of them. My image is worse. Instaed of 3 D its all rainbow like. Can not even read to get to the cross hairs. Still get the Touch Focus Error. HELP Now What?

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  • Tony Ross Feb 18, 2007

    It seems never ending! Its soooo bad

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There are 3 low ohmage 2 watt resistors
for each stk chip, did you change those?
with-out those it may very well look worse!

Posted on Feb 22, 2011

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Make sure you have the three connectors that go to the convergence yokes to the proper spots, otherwise it will look worse.

Posted on Feb 13, 2007

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1 Answer

I have to use reading glasses to use a simmons blazer rifle scope.....othewise the image is blurry.


You can't see the cross hairs or the whole picture is blurry? I know that the rear ring on the scope will bring the cross hairs into focus, glasses or not, and the scope itself should be clear all the way down, I can't see a thing either without glasses and it has really hampered my shooting. It ain't no fun , it's frustrating. Try turning the rear eyepiece, see what happens, hope this helps.

Feb 27, 2010 | Cabela's Cabelas Pine Ridge 3 X 9 X 40...

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Hi I am having the convergence problem with the rca 52" projection. I checked...


FL231. FUSE.... The RCA ITC222 chasis has a common problem. and it not all that difficult to repair. Does your rca projection tv have read blue and green shadows? Does it have bowing in affect on the top and bottom of picture? when you turn it on does some thin red green and blue line bow in from the top then go away. The main question to determine if you have the fl231 fuse problem is if you go into customer menu then setup do you have the "CONVERGENCE' option. If you do not. then i suspect you have this problem. In the manufactering of these sets Lead free solder is used. now there is great debate over the use of lead free. connection tend to be more brittle. cracks develop around the solder connections of the high voltage flyback transformer. this very small crack set up oscillations in the cuicit with a 400 milliamp fuse. THis fuse cant take it. When this fuse blows the processor then does not know its a projection tv with three projection tubes. it thinks its a crt tube tv. and crt tube tv dont need "convergence" so it removes the convergence from the set.

TO REPAIR... 1. Warning. this set can generate leathal dangerous voltages even unplug do not attempt if you have no experence with electronics.
2. Remove the back. there a number of torx 20 screws.
3. what you will see is a number of circit boards There will be one on the right and one on the left. the one on the right is the small signal board. the one on the left is called the power deflection board. it has a large black part with a big red or black wire coming from the top, this is the flyback.Next to the flyback on the right of it there will be three small rectangular componets tan or brown in color. these are fuses. the one in the middle is the fl231 fuse.
4. getting to this fuse can be difficult. these two cuicit boards sit on a tray that is removable. to remove this tray it is pulled out and up. BUt watch the wires.loosen the wire tyes.
5 when you get the tray up the bottom side of the board can be accessed
you will now have to unsolder that fuse. one side of this fuse is under a plastic part of the tray. i have found the easest way is to cut away the plastic to get to it. if you dont want to do this you will have to remove the board. only remove half of the plastic brace
6. REPLACE FUSE RCA PART 259213
7 RESOLDER FLYBACK CONNECTIONS simply heat up and add a little solder
8 reassemble set. make sure you examine the set for loose connections.
9 and remember "BE Careful'

on Jun 09, 2009 | RCA R52WH73 Projection Television

1 Answer

FL231 Fuse not blown


check the convergence power supply board for blown reistors. Thats the upper left board when looking in the rear.

Jun 09, 2009 | Televison & Video

1 Answer

Hi I am having the convergence problem with the rca 52" projection. I checked continuity for the FL231 Fuse and it tests fine. I soldered the flyback even though that looked ok as well. I now have the...


Hi. you will need to replace the entire convergence board in this case. the stk chip or, convergence IC is damaged. i will list the part number below. RCA Part Number: 271860 Unfortunately. the actual individual components for this board are not available.

Jun 09, 2009 | RCA R52WH73 Projection Television

1 Answer

Red rainbow on top half of screen and double images


ch the stk 392-120 try to set the conv.or try to auto set conv. if work then ok if not work you and stk392-120 or 150 you need a sevice man for that.

Jun 02, 2009 | JVC AV-48WP30 48" Rear Projection...

1 Answer

Blue Ghost


you will need to replace 2 stk ic [ parts ] after that the technician will have to realign the picture, sometime also some resistors get bad along with one or 2 fuses

Dec 15, 2008 | Sony KP-51HW40 51" Rear Projection...

1 Answer

Convergence service mode


Hello,
I don't know how to deal with the power settings part but the convergence service mode is "Mute, 1, 8, 3, power".

Jan 03, 2008 | Samsung PCN5425R 54" Rear Projection...

1 Answer

I have a Toshiba 50D9UXA rear projection


Same problem - - needs convergence amps replaced and low ohm resistors tested for change in value.
Bill

Nov 27, 2007 | Toshiba 55H70 55" Rear Projection...

1 Answer

Help I have a 3 D image


You need to replace 2 ships stk 392-150 any question I'll be glad to help you 401 6170008 my name is George

Jan 19, 2007 | Toshiba 53H71 53 in. Rear Projection...

1 Answer

WS-55809 - Video pinched in center, distorted, yellow/blue/red glow


This doesn't sound like a programming issue. I had a very similar problem about 6 months ago and I fixed problem. I had cold solder joint on the video power board. It was the board in the middle. The power supply was to the right. The video board had a driver with a bunch of legs. About 7 solder joint where cold or loose. I solder the board and my mitsu wide screen was fixed. Hope this helps.
Andy

Aug 22, 2006 | Mitsubishi WS-55809 55" Rear Projection...

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