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51H93 HORIZONTAL OUTPUT TRANSISTOR FAILURE - Projection Televisions

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  • Anonymous Mar 03, 2009

    when i turn my set on its making a popping sound and will not come on

  • sonale May 11, 2010

    I am using an opocoupler for line driver. The transistor section is driven by 11volt. SOme transistors are used to drive the line. They are failing. Could you please tell me the reason.

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What's the question???

If the transistor has failed, it has to be replaced. The cause must be found and fixed before applying back the power, or the new replacement will probably soon fail.

Jerry G.

Posted on Apr 16, 2008

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1 Answer

Tv will not turn on even when reset button is pushed all you hear is a clicking noise


You need to replace the power supply on your set, this happen when horizontal output fail.

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Horiz output failure repeatedly?


can you please provide the TV model and part #.

Thanks

Apr 15, 2008 | Toshiba 51H93 51" Rear Projection HDTV

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Push power button and lold it in green light blinks one time and then nine times fast and then cuts off light try a few seconds later and green light comes on for a few seconds and off it does this three...


Hi:

You are in HV shutdown mode, Have the Horizontal output transistor replaced as well as the Horizontal output transformer. These are the most common failure for this problem, The three blinks indicates Delfection problem, and these parts are part of the main High Voltage Deflection circuits.

Dec 27, 2009 | RCA D52W20 52" Rear Projection HDTV-Ready...

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What Is There To Ask About A Hori Output Tramsistor?? It Needs To Be Replaced I Guess??


The horizontal output can be open and the set wont have High voltage or it can short which will usually blow a fuse. The transistors cost about 10.00 - 12.00 for quality Horizontal output transistors.

Dec 05, 2009 | Projection Televisions

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No picture


I disagree with given info, this tv has no horizontal output transistor because it is dlp tv.
3 red light blink means lamp cover is not placed back properly after lamp replacement/ lamp checking. Make sure lamp cover is fixed back in its place securely and tight.


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Flyback transformer and horizontal output transistor change out


There is a little loose sleeve at the transformer. It can be pulled out, but it is best to squeeze the sides through hole on each side of the terminal to remove the sleeve. The wire just comes out with a small pull afetr the sleeve is removed. Good luck.

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The error codes...


a 2 3 code means horizontal deflection has stopped thats what is most likely shutting down your set. The most probable cause for this would be a defective Horizontal output transistor.

Jul 17, 2008 | Mitsubishi WS-65809 65" Rear Projection...

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Toshiba 51H93 .


check for cracks in the driver circuit, also i believe this maybe on of the models that had a kit that helped from driving the h-output to hard causing it to get hotter then normal.

Apr 11, 2008 | Toshiba 51H93 51" Rear Projection HDTV

1 Answer

Horizontal output transistor failure


check b+ comming from p/s. also check for blue flat caps in line with h-output circuit. if blown out the side. remove them from circuit. also might have a HVT goin bad. I believe this is also the model that might have a mod for h-out running too hott that requires adding a resister in the h-drive circuit. also try a heavier duty h-output.

Apr 09, 2008 | Toshiba 51H93 51" Rear Projection HDTV

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