Question about Toshiba 50H71 50" Rear Projection Television

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Toshiba 50H71 Where do I locate the resistors that you think may be burned or open that power the ICs? I looked to make sure there were no bridges and there were none. When I looked at the board on the right hand side there is a plug that says P113 and there is not anything plugged into it. I dont remember anything being plugged into it before but I am not sure. I looked around inside the tv and I cannot find anything to plug into it so I think that it should be left empty.

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The plug on p113 is not the problem I have the same tv and it has nothing plugged into it either :) I to am trying to locate the resistors that might be the problem. I replaced both chips and still have only blue vertical converge not working

Posted on Sep 03, 2008


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I have a Toshiba 50h71 with nothing but a blinking power light and click sound when I plug it in. I found a service manual, I have the TV opened up, and I've got a digital multimeter, but I'm not exactly...

resolder the connections on the board around the caps even though it looks good it could still have a bad connection. While your at it heat up the solder connections around other components. If this doesnt solve you problem concentrate on the high voltage section of you tv check for open resistors. And bad transistors move from there to your driver chips these may be in the in the form of high output transistor chips. If it is overheating it might be the source of your problem. Check your horizontal and vertical output chips and make sure they are not overheating as well

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1 Answer

Can not adjust red convergence up or down it will adjust left or right

replace the convergence ICs and resistors. You can get the repair kit for your model at the following link. The kit contains the parts and instructions.

Jul 10, 2009 | Toshiba 50H81 50" Rear Projection...

1 Answer

Toshiba 50H71 Won't Come On

This could be caused by several different things.. your convergence amplifier ICs could be bad, causing 1 of the 2 pico fuses to open up.. another possibility could be bad solder or defective hybrid voltage regulator to be bad (its usually a light brown color).. worse case could be a cracked picture tube hidden by the deflection coil on 1 of the 3 tubes.. might also wanr to check if the horizontal output transistor is shorted..there is also a 1A pico fuse that could be open..

Dec 22, 2008 | Toshiba 50H71 50" Rear Projection...

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Toshiba 57H81, Looks 3D, with touch focus error. how do I fix this?

you need a convergence repair kit. The 50H71 convergence repair kit available at the following link also applies to the H81 models it contains both ICs and the feed resistors. They also send instructions on how to do the repair. Heres the link.

Nov 29, 2008 | Toshiba 57H81 57" Rear Projection...

1 Answer

42H83 Convergence

Yes the convergence ICs need to be replaced, however so dont the six 1.8 ohm 1watt resistors as Toshiba recomends replacing those six resistors when the ICs are changed. You can get the 50H71 / 50H82 Convergence repair kit as the 42H83 is identical to the 50H71 series, so the kit will work for your model. Heres the link where you can get the kit.

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They are both 1.8 ohm 1watt fusible resistors. Metal film 5% 1.8 ohm 1watt will substitue them

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Did you also check to make sure both pico fuse are good ?

Jun 09, 2008 | Toshiba 50H71 50" Rear Projection...

1 Answer

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you need to replace both the convergence ICs they are STK392-110 you can get new replacement ICs at the following link and they will provide free instalation instructions with pictures so you can do the repair yourself. Heres the link.

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3 Answers

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Did you check to be certain none of the resistors were burned or open that power the ICs ? This is fairly common for one or two of the convergenvce resistors to be open when the ICs go out. Also double check the iC pins to insure that none of the pins are bridged with solder. If you need more assistance please let me know.

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1 Answer

Toshiba 50H71 50 in. Rear... Problem

set most likely has bad convergence ics J.D.W.

Mar 26, 2008 | Toshiba 50H71 50" Rear Projection...

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