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SONY KV-27S65 I'VE PROBLEMAS W/SONY TRINITRON KV-27S65 I HAVE BEEN REPLACED HORIZONTAL OUT TRANSISTOR(Q502)AND IC (IC602)POWER CONV. IT WAS WORKED FINE FOR COUPLE HOURS AND GET SHORT SAME PARTS AGAIN ...ANY IDEA COULD BE MADE IT? THANKS

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6 Suggested Answers

  • 236 Answers

SOURCE: STRS6707 problem

In the past, my experience with Sonys is that you need to use Sony parts to successfully repair them. Also you might have a cold solder joint which creates an arc when you turn it on. This arc will cause a "spike" which could possibly take out the regulator. Stargazer

Posted on Jan 21, 2007

MikeNJ1964
  • 398 Answers

SOURCE: Sony KV-32S40

When the horizontal output (2SC4927) is shorted it means one of 2 things is wrong - the horizontal drive transformer has cracked solder joints or the flyback transformer is shorted inside. If the solder joints on the horizontal drive transformer (the small grey transformer connected to the base of the horizontal output transistor) are cracked then the set will play for a little while and then the parts you just replaced will again be destroyed. ALWAYS resolder the driver transformer when replacing the parts you mentioned! When I replace the parts you mention and I do not see any obvious cracks on the driver transformer then I unsolder the B+ pin of the flyback (labeled 135, for 135 volts) and put a 60 to 100 watt lightbulb (drop-light) in series with the flyback. This means that the 135 volts B+ goes through the lightbulb and then into the flyback, so the lightbulb acts as a current limiter to protect the horizontal output. When you turn the set on the bulb should glow no more than about half bright and you should hear the high voltage come up, but you should not see a picture. If you turn the set on and the bulb glows as bright as if it was plugged into the wall then you can bet that flyback is shorted and must be replaced.

Posted on Jul 13, 2007

  • 1 Answer

SOURCE: Sony Trinitron Wega kv-36fs120 wont turn on, standby/timer LED flashes 9 times.

1. Place set on flat solid surface (garage floor or driveway).
2. Bang into it with SUV 3 or 4 times.
3. If set fails to respond, crush against garage wall or drive over it

Posted on Jul 09, 2008

  • 4234 Answers

SOURCE: sony color TV model kv-c29 11d blown power supply ic and transist

There should be circuit designations printed on the PC board. Without those, there are too many possibilities to give you anything useful. Can you provide those please?

Thanks,
Dan

Posted on Jan 21, 2009

stonephoenix
  • 563 Answers

SOURCE: Sony FD Trinitron WEGA KV-32HS500...red standby light blinks 6 ti

I have over 10 years experience in electronic tech support.

I know this isn't what you want to hear, but the problem you've described can't be fixed with
troubleshooting. Your TV will have to be repaired. There is a part that has developed a defect and needs to be replaced. If you're still in warranty, the TV will be repaired at no charge to you. The warranty would likely be at least one year from the date of purchase from the manufacturer. If you purchased an extended service plan they will repair the TV at no charge as well.

If the TV is no longer in warranty, it will likely cost a minimum of $150 parts and labor. This is assuming that you only need one
circuit board or small part. If the problem is more than one of the circuit boards, the price of repair could go much higher.

I hope I've provided you useful assistance and that this information allows you to make an informed decision as to how to proceed from here. Please be sure to vote on my response. I hope I've earned a good rating from you today.

Please let me know if I can be of further assistance.

Posted on Jul 11, 2009

  • 1 Answer

SOURCE: Sony Trinitron 21 inch KV-G21M1

what is the securet code of this tv. No picutre, sound but video mode is good. how to solve this probles.

Posted on Feb 18, 2010

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1 Answer

SONY trinitron 38" KV-HS38M61 wont turn on...


There is a short circuit inside the circuit board, and the main system IC detects it, and shuts down. That is happening now. you have to check and replace the defective component. In most cases, the horizontal output transistor is found faulty. Check it, and replace it with a new one. To get more details, http://electronicshelponline.blogspot.com/

Nov 12, 2013 | Sony FD Trinitron WEGA KV-32FS120 32" TV

1 Answer

My sony trinitron 32" tv just went black and the


Hello

Six blinks of standby light in Sony TVs denotes the absence of horizontal oscillation.

No Horizontal (H STOP), no raster, goes to the blinking self-diagnosis function immediately. Check C515 & 516 and the jungle IC, IC206.
In most cases the Ic is foud defective. anyway check its soldering points for any loose contact, or bad solerings. Check the line drive transformer, a very little transformer soldered directly to the main printed circuit board, very close to the horizontal output transistor. Check its primary winidngs for open. If it gets open no horizontal drive signal will be present at the base of the horizontal output transitor, that also may the cause of horizontal stop.

Nov 20, 2010 | Sony FD Trinitron WEGA KV-32FS120 32" TV

2 Answers

I have a sony kv-36hs20 that will not turn on it just clicks and the power lite flashes about three different codes i think thats what that means i worked in a tv shop yrs back and have a little experence


hello!since you have an experience in repair,try to have a voltage data on the circuits of your tv..check whether there is a supply output from the plyback secondary,does the heater of the picture tube is lit?if yes your plyback is working fine,,if not,check the horizontal output transistor for any leak,open or shorted.do it same to the regulator.if these two transistor is bad replace them..check also for any leak capacitors on your horizontal section.there might be a problem in there..same with the capacitors on the power supply section.If The plyback transformer is not switching replace the jungle ic.this ic generates the horizontal pulse to the plyback..good luck hope i helped you..

please rate my help.

Jun 04, 2010 | Sony FD Trinitron WEGA KV-36HS420 36" 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

Kv-36xbr800


Hiii...

My version is :
For safety reason you should replaced them ( Horizontal ic,Vertical ic, Deflection ic) and olso all the big capasitor nearest the ic....that's my version....if you have big budget for it....he..he....

Thank's
[Vrya]

Dec 27, 2007 | Sony FD Trinitron WEGA KV-36XBR800 36" 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

1 Answer

1996 Sony 32" Trinitron - Suddenly lost picture and sound


The most common problem with TV was the failure of the Horizontal Output Transistor, this will also damage 2 transistors in the power supply and a resistor in the power supply also. (From memory): Horizontal Output location # Q501, 2 power supply transistors Locations Q601, Q602, and resistor Location R607. Also solder the Horizontal drive transformer, you can find it by following the circuit board from the base of the Horizontal output. Some models used an IC instead of the 2 transistors in the powersupply, it will have six legs and check like 2 transistors. Good Luck.

Jun 04, 2007 | Sony KV-32S26 32" TV

1 Answer

No picture, sound works on Sony TV


Hello, maybe there is a contact error in power supply or the deflection stage. If the resoldering does not help- here are some possible solutions: remedy Replace flyback location LP04. Entered for KV32S22 /SONY (Chassis) remedy 2 Replace IC351, Q602, Q601 (2SC4834M), R607 (1R/0.5W), R622 (10R), IC641 (SI3090CA) and Q502 (2SC5148). remedy 3 Replace tuner. remedy 4 Replace R607, Q502 and IC601. Entered for KV32S22 /SONY (Chassis) remedy 5 Replace regulator IC, R607, check C609, C610 (0.68pF) and C613 (0.0022pF/500V). remedy 6 Replace horizontal output transistor (2SC5148), IC601 (MX0841) and R607 (0.1R). remedy 7 Replace IC1701 and IC601. remedy 8 Replace Q501 (2SC5148), R607 and resolder horizontal driver transformer. remedy 9 Check and replace horizontal output transistor Q502 (2SC5148) and IC601 (MXD8411AB-F). remedy 10 Replace shorted R607. Also check T501 and Q501 for dry joints. remedy 11 Replace C608. remedy 12 Replace Q602 and D648. remedy 13 Replace Q502, Q601, Q602 and R602. Entered for KV32S22 /SONY (Chassis) remedy 14 Replace D626 (6.2V). remedy 15 Replace IC801 and R607. remedy 16 Replace horizontal output transistor and the associated damping capacitor. Check flyback transformer and SMD microprocessor as well. remedy 17 Replace R639 (4.7R/0.250W) located on G board in standby power circuit. remedy 18 Replace D600. remedy 19 Replace C502 (0.47uF/50V). remedy 20 Check D655(1N4937), D657 (1S1834) and Q601 (2SC4423). remedy 21 Check D606 for leakage. remedy 22 Check yoke between vertical and horizontal windings for S/C. remedy 23 Replace Q601 (2SC4834MNP), R607 (0.1R) and C517 (2.2uF/250V). remedy 24 Replace R611.

Apr 22, 2007 | Sony KV-27V22 TV

4 Answers

Clicks - but no picture!


According to the manual... Problem: 'a red light keeps flashing on the tv for more than a few seconds', What it could be: 'your tv may need service', What you can do: 'Call your local Sony Service center'

Nov 29, 2006 | Sony KV-27S45 27" TV

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