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Can I use a transistor from one TV to anothe - Televison & Video

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You can. But the number should be similar or exact equivalent.

Posted on Apr 30, 2013

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Power supply transistor transistor no. C4237 replaced 4 times. each replacement didnot sustain for a week. which transistor can i use instead.


I have worked to repair a few of these. When the transistor is burned, you most likely have a bad flyback transformer and bad picture tube. In this case you replaced this (transistor) component four times. This TV cannot be saved. Thanks for asking.

Oct 19, 2011 | JVC AV-24F704 24" TV

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My toshiba 20as22 tv suddenly made a loud arcing sound and lost video and audio. when i unplugged and plugged it in again, it still made the arcing sound, what could be causing this ???


Your TV has developed a bad flyback transformer. You also will have a bad horizontal transistor. A bad picture tube can contribute to a stressed transformer and transistor. Another reason this TV is on the fritz, you have bad capacitors. Sometimes a bad capacitor will take down the most important ICs in a TV. I would not recommend a repair, as it will be to costly. Thanks for asking and show all hands of support.

May 18, 2011 | Toshiba 20AS22 20" TV

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Our akai tv 29inches purchased 1998,was OK till 28th Nov 2010..Now it is not working.service engr says transformer part not ok and being old model not available.What do we do? Kindly advise. ratna...


better consult another service technician that TV is repairable tell the repairman to check the regulator transistor and the horizontal output transistor they must be faulty.transformer are repairable not necessarily you have to replace it with a new one you can rewind it..

Dec 24, 2010 | Akai Televison & Video

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Tv will not turn on. I have unplugged it and tried another outlet but still will not turn on. There is power going through the Tv. Any thought on what it could be


check your b+ first. if your tv has no 125 volts your tv will not turn on check your horizontal transistor located in the side of the flyback transformer unsolder the collector then try to power on your tv check your high voltage at the collector without the collector of the horizontal transistor.

Dec 22, 2010 | Akai CF2791 27" TV

3 Answers

Sharp TV 21" screen with a switch mode power supply.


i have a tv receiver with a problem of no power going to the whole system thiis transistor c3807 and connected to bigger transistor c4458 are gone together with connecting diodes.any solution please?

Sep 19, 2008 | Televison & Video

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Tv problem


The F27442 uses the CTC203 series chassis and that symptom is very common. If the horizontal output is shorted you MUST resolder the coil in series with the base of that transistor and the pins of the small horizontal drive transformer. When they have been properly resoldered you can put in a new original horizontal output transistor. If the output transistor shorts out again then your flyback (high voltage) transformer is shorted and needs to be replaced.

Aug 08, 2007 | RCA F27442 27" TV

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