Question about Sony FD Trinitron WEGA KV-21CL10 21" TV

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Sony Trinitron KV-21LT1E No longer turns on. Red light comes on

My girlfriend and I were watching her TV one night and we turned it off, then 20 mins later decided to watch some more but the TV would no longer turn on. When we push the power button on the TV, a red light comes on and stays on but, nothing else happens. Would really appreciate some help with this one!

Cheers,
Ian

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  • Anonymous Nov 27, 2008

    No longer turns on



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6 Suggested Answers

techman
  • 3130 Answers

SOURCE: Sony Trinitron KV-27S46

There is a problem in the sweep section of the set. The Horizontal sweep power supply most likly. there is nothing a layman can do as it will involve troubleshooting the solid state circuit. please find a trainded tech to assist you in this repair.

Posted on Sep 22, 2006

IrishDruid
  • 2712 Answers

SOURCE: sony trinitron kv-36fs76u

Hi,

From the symptoms you describe, it seems the high voltage flyback autotransformer has failed along with the horizontal amplifier (they are slaved to each other).

Well, the only way to solve this is to get a technician take a look at the set, I'm afraid. Repairs could cost upto $100 or more, depending upon the number of components that need to be replaced,

Since the set is new, it may be worth getting fixed up. If you decide to do so, call around, as shops have different rates and different expertise. Many shops are hurting for work because so many of the smaller sets are never repaired anymore; they are just thrown out and replaced since the cost of a new set is sometimes as low as the repair expense.

Hope that helps...Should you have any further questions, please feel free to post them here.

P.S. Before you assign a rating, please make sure that the issue is resolved or you are satisfied. If not, please post back as to what you did, and/or any other questions you may have, and I will try to assist you as best I can. Please do not assign an ‘Inappropriate’ or ‘Thanks for trying’ rating if your issue is not resolved after the first response itself, as sometimes a bit of to and fro dialogue may be necessary before we can find a fix or an answer to your query.

If you find that the solution/answer I provided led you to, or resulted in a fix, please close the ticket with a FixYa! rating. I would be very grateful for your show of appreciation.

Thank you for using FIXYA!

Cheers,
IrishDruid

Posted on Apr 26, 2008

  • 306 Answers

SOURCE: About Sony Trinitron KV-28LS36B

there are two possible defects in your circuit. 

However, if the led blinks for about 10 times your tuner is defective 90%. 

You will need a scope to check or you will need to take it in for service. 

Posted on Oct 15, 2008

  • 61 Answers

SOURCE: Sony Wega 40" TV will not turn on, standby light blinks 6 times repeatedly

Hello,For model KV-40XBR800,

Pls check following area.

Low HV Shutdown:
On the D Board.
Check IC8004/pin 7 should be 7.4v.
Check IC8006/pin 2 should be 2.5v if lower will trigger shutdown by causing pin 1 to turn on.
Check IC8006/pin 3 reference voltage 2.2v.
IC8006/pin 1 normally at 0v. If high
turns D5007 ON which turns the latch circuit Q6532,
Q6530, and Q6527 ON and turns the AC relay RY6501 OFF.

And NOTE: 6 blinks also can be Low B+ protection.

Unregulated 7.5 v from the power supply to 5v reg IC504 on the A Board. 5v to M Board Q2314

to CPU IC2300/pin 43. If 5v missing set will shutdown with 6 blinks.

Good Luck
Dals123

Posted on Oct 15, 2008

guitarsam515
  • 15 Answers

SOURCE: Sony FD Trinitron WEGA KV-36FS120 36" TV Problem

The horizontal or vertical output transistors could be suspect in this case.

Posted on Oct 17, 2008

Shuttle83
  • 1139 Answers

SOURCE: KV-36XBR450, FD Trinitron WEGA

Hello maymet,

This sounds like the HV protection circuit is cutting off the TV due to a high current event in the set. This could be a problem in the High Voltage section of your TV (Horizontal output transistor, Integrated High Voltage Transformer, and y of the deflection components, and or the CRT in cases of shorts).

I would suggest that if you do not have a background in electronics, you should have an experienced TV technician troubleshoot and repair this problem.
This is due to the nature of the dangerous voltages that are present in the television.

I hope this helps,

Thank you,

Shuttle83

Posted on Nov 23, 2008

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