Question about Sony KV-20FV12 20" TV

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TV is in stanby/timer?

A friend of mine gave this TV to me. It's light stanby/timer on TV is flashing all the time. I can't get the TV to come on either by remote or TV. I have tried a few things but no success. Can anyone help. Please email me at

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Re: TV is in stanby/timer?

There are any number of things could be wrong here. If you have an ever so slight chirping sound coming from inside the unit when you press power could be defective crt driver Ic702 which is a Tda6108 and a common problem for these sets. Could be regulator or flyback and could even be vertical Ic which is a Tda8172 and just the way that circuit is designed, without full deflection from a failed Ic, the shutdown would keep the power off...
Best advice here is take it in to a qualified shop and have them estimate it, you'll be money and headaches ahead..

Posted on Nov 24, 2007

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Sont tv model#kv-32hs420

Six blinks - No Horizontal (H STOP), no raster, goes to the blinking self-diagnosis function immediately. Check C515 & 516 and the jungle IC, IC206. Check this link for more details. Pull up older posts. Blinking codes to Sony TVs are given in detail.

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Here's a video Tom Chichester suggested as a solution to your problem from YouTube:

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Hi Frank,

Please let me know if it has a pattern of blinks (separated by a pause) or it will flash an exact number of times. Your unit (KV-34HS420) has a built in self diagnostic software that will indicate the probable caused of the fault by flashing of the LED at the front panel.


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1 Answer

Flashing green light

Did you try this yet

If the TV will not respond to either the remote control
or the front panel controls and/or will not power Off,
press the SYSTEM RESET button with a pointed item
like the end point of a paperclip. The TV will turn Off
and the TIMER light will flash quickly for about one
minute. When the TIMER light stops flashing, you may
turn on the TV again. Changes you made the last time
the TV was On before you used the SYSTEM RESET
button may be lost, however, the changes you made
previously are not lost.
The green light is a multi-function indicator. This light
will flash rapidly for about one minute each time the TV
is plugged into the wall electrical outlet, when power
is restored after a power failure, or using the SYSTEM
RESET button. Do not attempt to turn on the TV again
during this period. Wait for the flashing to stop and
the light to turn off, before attempting to turn the TV
on. While the TV is powered on, the light illuminates
steadily. If the TV has been programmed to turn on
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The 2 blinks usually mea an over current problem. Perhaps the most common cause of this is a shortde Horizontal Output Transistor (HOT). If you can solder, you should be able to repair this yourself. Realize that there are potentially dangerous high voltages present inside the set even when unplugged. Look for a 3-legged ransistor attached to a heatsink close to the flyback (part with large red wire coming out the top). The part will be marked C5438 or something similar. Post that marking here nad I'll confirm the entire part number.

Keep us posted.


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4 Answers

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1 Answer

Sony KV30hs420 0 Stanby Light Timer Blinks 3 times and powers TV off

Led blinking Three times means B+ over voltage protection (OVP), unit goes to the standby mode then displays the 3 blink fault. This is also a problem in the power supply circuit, check T603 and R672. If you have electronic knowledge you may be able to fix it. Let me know if I could help you further.
Hope this helps.

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