Question about Toshiba 32A42 32" TV

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Kids. the red light keeps flashing,i have noticed a transistor thats been shorted with just number 1205 on it which is located on Q803,my two year old son inserted something to cuase this problem,can you please give me a replacement number for that transistor-

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Re: kids.

Dead, led flashing red/green at first, then going to red standby
Replace C604 (1000uF, 16v) elec. cap. It is in the decoupling circuit for the 5 volt supply
Red led blinks on / off, TV does not turn via power button and/or remote but after 20 minutes or so it turns on and works fine
Replace R902, R901, R905, R903, R900A, Q902, and possibly the two (one small and one large) capacitors in the section labeled as the power supply. The board will be black under the components that are bad. Q902 is an NPN transistor and is hard to find.

Posted on Nov 24, 2007

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When switching on the tv the on light is flashing from red to green and there is a clicking sound as though it is switching on and off. Any suggestions as we have no picture or sound.

It may be due to some sort of short in the horizontal output stage inside your TV. You just check the horizontal output transistor, can be located near to the Line Output Transformer [LOT]. It is the transistor that drives the LOT. Check whether it heats up abnormally or not. Anyway keep it out desoldered and check it for any leak. Especially its collector to base leak. If it is found leaky, replace it with the same type and number. If the replaced transisor also overheats, LOT is short. Replace the LOT also with Same Type and Number. Insist on same type and number. Never use substitutions. It is the most critical component in your TVs circuit. Ok
Have any further clarification, report to Fixya. They will give me alert.
Take all precautions before opening your tv by yoursef. Keep chldren away from you. let an adult beside you while you are working as a precaution. Never use metal chair while in work. Wear rubber or plastic footwear while working.

Oct 20, 2010 | Sony FD Trinitron WEGA KV-36FS120 36" TV

1 Answer


The 2 blinks usually mea an over current problem. Perhaps the most common cause of this is a shortde Horizontal Output Transistor (HOT). If you can solder, you should be able to repair this yourself. Realize that there are potentially dangerous high voltages present inside the set even when unplugged. Look for a 3-legged ransistor attached to a heatsink close to the flyback (part with large red wire coming out the top). The part will be marked C5438 or something similar. Post that marking here nad I'll confirm the entire part number.

Keep us posted.


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Toshiba 36HF71 has sound but no picture

Same problem with mine. Relays click, sound, no picture and a flashing power LED. I finally found a schematic online. I went through the high voltage circuits and found the power transistor 2SC5570 was shorted out. There is also a pico fuse in that area but my was not open. I replaced the transistor and prayed the flyback transformer was not shorted. It wasn't, I'm watching my old 36" right now. Not a bad fix (17.00) bucks. Wonder what a service tech would have charged ;)

Jan 02, 2009 | Toshiba 36HF71 36" TV

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My tv has no picture or sound. it makes a sound like its about toi come on but it doesn't. a red light just flashes

The Horizontal Output transistor needs to be changed as it is most likely shorted. The current transistor on this set is a 2SD3402 (no longer available) it's new replacement part number is the 2SC5902.
Order 2 2SC5902 Horiz Output transistors.Replace the transistor by it self once and if all is ok then fine.
If not replace it again and also the the Flyback HV transformer. The HOT transistor is probably shorted again and the transformer is causing it.

Dec 21, 2008 | RCA 32V550T 32" TV

1 Answer

Sony Trinitron 29inch Color TV

The 2 blinks are an indication of over-current. This is usually because of a shorted component. The most common is the horizontal output transistor. This will be a 3-legged part attached to a heat sink close to the flyback transformer (part with red wire coming out the top). This transistor will be marked C4856 or something similar. Update this with the exact marking and I'll provide you with the full part number and approximate cost.


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1 Answer

No picture-- Diagnostics Light blinks twice. Set is about 6 years old. Set and picture look(ed) brand new. This occurred suddenly and for no apparent reason. Please give me some GOOD news! RTNTX

The 2 blinks indicate an over-current condition. Basically that means that there is a shorted component inside the set. My first inclination is to check the horizontal output transistor as that is the most common failure part. Figure on the part costing between $10-$20. Add in the local labor rate for the total repair cost. If you can solder and are confortable workin g with eleectronics, you can repair this yourself. The Horizontal Output Transistor (HOT) is located close to the flyback transformer (part with large red wire coming out the top) and is attached to a heat sink. It has 3 legs. It may be marked C5638 or something similar. Post hte marking here and I'll give you the part number.


May 28, 2008 | Sony FD Trinitron WEGA KV-32FS120 32" TV

1 Answer

Model KV-32FS120

your set may have shorted hori output transistor NTE2324.or bad capacitor by hori.

Jan 17, 2008 | Sony FD Trinitron WEGA KV-32FS120 32" TV

1 Answer

Sony blinking standby light

This is Sony's way of telling you that there is a short in you set.Probably the horizontal deflection circuit.(Horizontal output transistor shorted??). Also any other short. You need to take it to a techincian and have it checked out. It would be wise to get an estimate! Stargazer

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3 Answers

Sony KV-32HS510, worked perfect, turned on the next day and all I gat is flashing red light.

Your tv does not need a reset,what happened something went bad inside the set and it needs to be replaced,if you are familiar with tv service you can start by checking the horizontal output transistor for a short,if he went bad it likely made the fuse or safety resistor open.If you are not too familiar with tv service be safe and call for assistance froma servicer.If you decide to go in looking for problems make sure the set is not plug in.Let Us know how it goes or if you need more information.

Oct 19, 2006 | Sony FD Trinitron WEGA KV-32HS510 32" TV

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