Question about Sony Grand WEGA KF60WE610 60" Rear Projection Television

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Berndulay@yahoo.com sony kv-1982m7 power supply problem. all power transistor is ok. the have the power supply but the tv not on or function

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Sony kv-1982m7 tv. power supply problem. the b+ is ok and the supply is ok the power supply transformer is not isulate that why the tv is not work or on

Posted on Oct 15, 2008

  • bobot72 Oct 15, 2008

    sony kv-1982m7 tv. power supply problem. the b+ is ok and the supply is ok. the power supply transformer is not isulate thats why the tv is not funktion or on

  • bobot72 Oct 15, 2008

    pls send me also a schm. diagram of sony kv-1982m7

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Accroding to your model number:(KV-...) In sony tv units power supply porblems is very low unless a power surge.
You have to check these things.
1. Stand by 5V available or not
2.If stand by 5V available press power and check B+ is getting or not
3.If B+ available check Horzontal oscillation
4.May be H-out transistor or video amplifier is bad.

Posted on Oct 14, 2008

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Posted on Jan 02, 2017

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Tv was dead no vvidei no sound after checking found that power supply capacitor and horizontal deflection output transistor was defective i lost that tr no part no please tell me what should i do?


Hello
There are few models of Sony telivisions which uses transistors in vertical output section. It will be a matched pair of PNP and NPN transistors. According to Sony schematic which I have with me used 2SB6494(PNP) AND 2SD669A(NPN) as vertical outputs and 2SC2383 as vertical drive, 2SC1364 as vertical oscillator. Just try to get the orginal numbers or find its equivalents from data book. Ok.

Oct 17, 2010 | Sony KV-35S42 35" TV

1 Answer

No display after on the tv


check horizontal transistor , if it is ok check the regulators 5v and 9v , check all diodes at the secondary side of the power supply
good luck
abebe

May 11, 2010 | Sony FD Trinitron WEGA KV-21CL10 21" TV

1 Answer

Sony TV KV-32v15 Dead Power Supply


you should of recived a 0.01ohm resistor it is wite and sayes sony on it.
its a flame proof resistor that needs to be the very same
look for it on the pcb test it its probly open right.
ask them to send you the right part.
regards,
daniel.

Jan 11, 2009 | Sony KV-32V16 TV

1 Answer

SONY TRINITRON KV-2167MT power not on


Please replace Horizontal Output Transistor in KV-2167MT and TV will start function.

Nov 26, 2008 | Sony FD Trinitron WEGA KV-21CL10 21" TV

1 Answer

TV - worth fixing or pitch?


Horizontal output and regulator transistor often short out on this model causing a dead condition. Also the resistor right next to the regulators goes open as well. Electronix.com has a sony repair kit to fix the power supply. You just have to check the numbers on your Horizontal output transistor to make sure you get the right kit for your model.

Feb 03, 2008 | Televison & Video

1 Answer

Sony KV-32S25 32"


Check Horiz. output transistor = shorted?
1)replace with first quality transistor
2)solder horiz driver circuitry
3)replace shorted converter transistors (2SC4834)
4)Replace open R607 .1 ohm 1/2 w.fusible (resistor ok)
   test.......T.

Oct 25, 2007 | Sony KV-32S25 32" TV

3 Answers

Standby


check secondary voltages and horizontal out put section, and check smps and all the voltages and line out put transformer section...

Sep 29, 2007 | Sony KV-32S42 32" TV

1 Answer

No power.


Usually, in those Sony sets, a crack developes on a small transformer in the horizontal drive circuit, which causes the horizontal output transistor to short. This immediately shorts out the switching transistors in the power supply and blows the Sony 0.1 ohm resistor fuse. A shorted flyback (high voltage) transformer will also have the same result. The power supply does NOT need to be replaced. The parts should be replaced, the flyback checked and the board resoldered by a qualified tech familiar with Sony sets.

Aug 23, 2007 | Sony KV-32V35 TV

1 Answer

Not fixed


power supply and possible horizontal short ,chech power supply if ok check horizontal o/p transistor if ok check the damper diodes for shorts,by the yoke plug./

Aug 22, 2007 | Sony FD Trinitron WEGA KV-34HS420 34" TV

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