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Transistor d1878 overheating and breaks down in jvc tv

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SOURCE: transistor d1878 get over heat

i have a sony kv-2197m3 i replaced tr D1878 tv turn on,but image it's bad in horizontal seize and tr D1878 was shorted again what's the matter? chek68@gmx.fr Post Solution

Posted on Jan 31, 2010

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SOURCE: can I use the transistor d1878 horizontal instead transistor c5148, I have the specifications for c5148, but I can not find the specifications for d 1878,someone can help me?

I have Sony TV, transistor D1878 is damage, can i use the another type for replacemen?

Posted on Apr 01, 2010

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1 Answer

My Jvc tv has horizontal lines going across it and makes a staticy sound. And there was a smoky smell in the air around it. There is still picture and audio but we have unhooked it from the wall. We tried...


possible yoke has overheated and this was the cause of smoke smell.
has to be replaced as horizontal deflection circuit has blown output transistor. There is also a retrace capacitor that may have to be replaced along with it. Regards, meder's tv service.

Jun 03, 2012 | JVC Televison & Video

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D1878 transistor is getting heat and its not working for 1 hour if we replace new one


check your audio section & replace transistor or" ic. check heat of parts for detect to damage parts.

May 29, 2012 | Televison & Video

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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

1 Answer

Respected sir i want to know the equivalent of d1878 transistor


That is a Sanyo type of line output transistor, sometimes used in power supplies of PT03 style.
Equivalents include the very popular BU508DFY BU808DFI etc or 2SC5885, 2SC5387 etc

I would choose a BU808DFI as a substitute. Slightly higher current and power rating.

Dec 13, 2010 | Televison & Video

1 Answer

The straped Capacitor from D1878 collector to graund,immedaitly blow out or burn out.


The first to do is to check and see if D1878, is shorted, or any other semiconductors shorted in that circuity, taht are related to the Driver (D1878), and or the Cap. Replace the bad components and cap.

Nov 14, 2010 | RCA 27F530T 27" TV

2 Answers

Transistor d1878 get over heat


i have a sony kv-2197m3 i replaced tr D1878 tv turn on,but image it's bad in horizontal seize and tr D1878 was shorted again what's the matter? chek68@gmx.fr Post Solution

Oct 11, 2009 | RCA 27F530T 27" TV

4 Answers

No Power on Sony TV


Be sure to use an ORIGINAL Sony transistor and be sure to resolder the pins of the small horizontal driver transformer and all parts connected to and around it, and your set should be fine.

Aug 17, 2007 | Sony FD Trinitron WEGA KV-20FS120 20" TV

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