Question about Sony FD Trinitron WEGA KV-34HS420 34" TV

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Sony FD Trinitron WEGA KV-24FS100 24" TV On/Off problems

Several people seem to have this problem. Mine is the same: "standby light" blinking when tv is off and it takes several tries to get tv to power on. Today it took about 20 tries to turn tv on. Help!! I'm no techie so please keep in mind us simple folks. Standby light blinks 7 times in a row. Attempts to power up fail each time. Unplugged TV after first hitting the power button but before TV turned itself off again without success (this was suggested by people at Sony). Still can't get TV to power up.

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Since this seems to recover there are 2 possibilities:

1) There are a number of poor solder connections on the main board that are causing enough of a circuit disruption to be detected as a problem. When the set "warms up", this seems to correct itself.

2) There are some defective capacitors in the horizontal circuit that again work sufficiently after warm up to allow the set to function.

If you are comfortable working inside the set and can solder, you should be able to fix this yourself.

Let me know if that is what you would like to do and I'll provide details.

If not, the parts required should not be more than $20. Add in the local labor rate for the total repair cost.

Dan

Posted on Jul 02, 2008

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Hi there

Try replacing the electrolytic capacitors in the power supply section. I started with replacing (2) 860uf 180v caps just after the bridge rectifier and continued along the circuit. Some (15) or so capacitors later,it finally cleared the the horizontal bars and lines and the high pitched noise. It also fixed another intermediate problem of no video, when turning on the power.

Here is a picture of what they look like:
Sony FD Trinitron WEGA KV-24FS100 24
Thank you for using FixYa. Have a nice day and please remember to rate this solution as FixYa if it helps you.

Thanks
Dustin Ellse (BearWeb)

Posted on Jul 02, 2008

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Perhaps power on switch is faulty

Posted on Jul 02, 2008

1 Suggested Answer

SOURCE: Sony FD Trinitron WEGA KV-24FS100 24" TV On/Off problems

check your lamp cover and make sure it is not loose. of so take a philips screwdriver an tighten the cover screw.

Posted on Oct 01, 2007

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The blinking standby light should be in a repeating pattern of a fixed count of blinks. Please post that count here as that will indicate the circuit in which a problem was detected. Armed with that info, we can then tell you the problem and probable solution.

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Sony FD Trinitron WEGA KV-24FS100 24" TV On/Off problems


check your lamp cover and make sure it is not loose. of so take a philips screwdriver an tighten the cover screw.

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