Question about Sony FD Trinitron WEGA KV-20FS120 20" TV

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Tv repair i have a sony tv (kv-20fs120). its almost 3 years old. when plugged it in and i push the power button on, the power/standby light blinks 4 times while tv is on with blank/black picture then turn off. what might be the problem?

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Re: tv repair

Undoutably the SMPSU (Switched Mode Power Supply) is faulty.. This will be a shop job... ensure you get a firm "Quote" and explanation B4 allowing it to be fixed.

Posted on Aug 01, 2007

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Sony Triniton TV KV 32FS120 will not turn on

In standby mode (red led on/after the led stops from blinking), press "Display", "5", Volume (-)", "Power on" on the remote control in sequence, self diagnostic screen will be display, let me know the what is on the screen to diagnose where the fault came from.

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1 Answer

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Yes, the blinks are error codes. I would not bother trying to figure out what they mean, I can tell you right now. Expensive repair. Average repair costs are 1/4 to 1/2 of the TV's current worth. Most likely a bad transistor. The average expected life span of a TV set is 3-5 years. After that, stuff starts wearing out fast. Time to move on.

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The key here is the count of the blinks. I'm assuming that the model number is KV-36FS120. Please post the blink count. It should be a count-pause-count...


Jul 28, 2008 | Sony FD Trinitron WEGA KV-36FS120 36" TV

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TV won't turn on

The 9 blinks usually mean that the power regulators are shot. This is a relatively simple repair and is a wear and tear item. Expect about $25-$35 in parts plus the local labor rate for the total repair cost. If you want to try and repair it your self, I can look up the part designations and numbers.
Keep me posted.

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I had the same issue earlier this week. 4 year old sony trinitron wega 32 in. I was told by Sony to call technician to repair and have called tech....could be anywhere from $200-$300 repair. I did research the blinks (google "sony blinking codes" to find out what each means) Ours was 6-7 blinks which meant power surge to tv. I advised to Sony that i saw many of the same issues with many of the newer tv's and suggested a recall issue--they denied and where no help.
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Sony tv kv-36fs120 will not turn on

Use a hair dryer on the back right side of unit. Humidity sensor may be causing the unit to stay off. The hair dryer may also remove dust causing a false humidity detection

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