Question about Sony KV-20FS12 20" TV

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Please, Help me fix my TV

When I turned the TV on, then the picture start blinking each 5 secunds, just the video get off end get on, the high voltage still that. I increase the screen voltage to see the picture on when the video turn off, Yes the screen stoll on. Please sumbody know fix this problem? Thank you for you help. I'm sorry for mi English

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Re: Please, Help me fix my TV

It sound like you have abad picture tube. Iknow this is not the answer that you want to hear. Sony's have video blanking circuit built into the video processor(in the jungle IC) when the emission of all three gun fall out of an acceptaable range. the screen blinks and when you turn the screen control on the IHVT all you see is re-trace. Some times there is a current limiting resistor in series with on lead of the heater on the crt board. By changing this resistor from 2.2 ohm to >.1 ohm @1/2 watt you can sometimes increse the filament voltage to the point that the blanking stops. This is only a temporary cure not a fix. The picture tube is probably bad. Scrivitron

Posted on Jun 21, 2007

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Kv35v-35 picture blinks on and off every 2 to 5 sec

The model is an older set----likely the master screen is turned a little low-------located inside the set either on board at end of picture tube or at the high voltage transformer----set monitors brightness level to picture tube---a little low and picture will blink on and off---age of the set etc.

Oct 30, 2012 | Standard (CRT) Televisions

1 Answer

Standby light flashes green and red, the pattern is 11 flashes, is this serious

Submit the TV to an authorised SONY workshop for a quote and a full assessment of the actual problems. This repair could prove expensive/uneconomical, but it is up to you. The quote (and their second opinion) should help.

Here is a list of the problems that might have occurred indicated by the number of blinks:

* Unit is dead, No blinks = Problem in the standby power section. Might check fuse, R607, Q601, IC601, R612 and VDR601 (should show open).

* Continuous blink once a second, no pausing = No reply from the jungle IC301 (data bus is busy, shorted to ground, or held high), IK video path is defective.

* 1 blink = not used for the self-diagnosis

* 2 blinks = B+ over current protection (OCP), unit goes to the standby mode then displays the 2 blink fault. Could be a short in the power supply of any of the circuits.

* 3 blinks = 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.

* 4 blinks = No vertical Deflection (V STOP), Screen goes to a single horizontal line then the video signal muted. Check IC1509, Q1505

* 5 blinks = AKB circuit (automatic kine bias), the timer/standby indicator blinks for about 30 seconds then goes to the self-diagnosis function. Something is wrong with the video. Check video out, Q705, 732, 761 and other components on the C board, also check Q218, 219, 220 on the A board. In addition, unit could be in IK blanking, try turning up screen slightly.

* 6 blinks = No Horizontal (H STOP), no raster, goes to the blinking self-diagnosis function immediately. Check C515 & 516 and the jungle IC, IC206.

* 7 blinks = High voltage shutdown. The high voltage has exceeded 33k and the unit goes immediately into safety shutdown. Check power supply regulation and horizontal circuits.

* 8 blinks = Problem with the audio (AUDIO), unit goes to standby and blinks the self-diagnosis code. Check IC406 audio amp, PS401, and 402. On some projection models of Sony TV sets, this code means that T8005 (flyback transformer), or the associative components in the high voltage circuits are defective on the D board.

* 9 blinks = Replace D 6116 and D 6301 on the "G" board, do not resolder as this will fix the problem temporary. Or Panel Module Error or Thermal Error. If it is intermittent 9 blinks, meaning sometimes the TV comes on and other times you get flashing, then change the switching regulator on the "G" board or check connections. Make sure the regulator is -12 or -13 (negitive).

* 10 blinks = Check Q8014 and Q8013 for shorts, leakage, or bad solder connections on the " D" board. If the transistors are bad, check R8051 and IC8005, also on the "D" board.

I assume the TV has no picture/sound as a result.

Dec 15, 2010 | Sony KV-36FS12 36" TV

1 Answer

Screen will not light up.standby/timer light blinks continuosly

check for any cold solder on the high voltage section of your tv A high voltage section is located at the power supply section, this is where the power cord is connected.resolder them,the horizontal section it is where the plyback transformer is located resolder them and the CRT board this is the boad that is attatched to the picture tube...good luck

please rate my help..

Jun 04, 2010 | Sony KV-35S42 35" TV

1 Answer

When i on the tv by remote the red standby light turns into green and i hear the tv sound but not picture and after a one or two second the green light turns into red. The tv goes into standby mode when i...

the high voltage or flyback transformer is not working.the sound runs off a separate fixed power supply.if you run your hand across the screen,is there static?that would mean the high voltage is ok but there is another circuit fault

Jul 08, 2009 | Sony FD Trinitron WEGA KV-36FS120 36" TV

2 Answers

Tv won't power on, stand-by light blinks 6 times continously

just unplug tv 5 minutes. and plug it again. power on again. if not reset tv.

May 25, 2009 | Sony FD Trinitron WEGA KV-32HS510 32" TV

2 Answers

Tv is sparking and making noise?

Warning: Flyback Transformer Failure. ( extreme high voltage ) 22,000 Volts +

Do not attempt to fix this without another human being present who's trained in CPR.

Thank you for choosing FixYa!
Azkeyz, Wizard Division.

Sep 23, 2008 | Prima CV1311 TV

1 Answer


Good Day, checho3435;

Look for fluid on the PCB's or check these items:

This model is equipped with a self-diagnosis feature to help with diagnosis of shutdown problems. To activate this turn the unit on let it shutdown then press the input/device and menu buttons on the front panel simultaneously and hold them in for 5 seconds after 5 seconds the power LED on the front panel will blink a two digit sequence. This will be one set of blinks a short pause then another set of blinks, this will repeat 5 times. 1 - 2 = no error detected 2 - 1 = X-ray protect (high voltage or beam current) 2 - 2 = Short protect (short protect monitors low voltage supplies) 2 - 3 = Deflection protect (this could be loss of vertical or horizontal deflection) 2 - 4 = Vertical protect (usually loss of vertical from the source). Good Luck, big IRISH>

Jul 30, 2008 | Mitsubishi WS-55807 TV

2 Answers

TV will not come on.

The 7 blinks indicate a high voltage shutdown (high voltage exceeded 33,000V). This is usually caused by a defective regulator. Could you please post the exact model number (KVxxx) and I'll look up the part you will likely need?


Jul 28, 2008 | Sony FD Trinitron WEGA KV-20FS120 20" TV

1 Answer

Sony KV-36hs500 problem

The 7 blinks indicate a high voltage shutdown condition. This means that the high voltage has exceded 33,000 volts. This is usually due to a power regulator problem. The regulator in this set is probably an STRSxx (I don't have a listing for your model) and shouldn't cost more than about $25 or so. If the picture was good prior to the failure and you can replace the part for less than $150 or so, it is probably worth it.


Jul 14, 2008 | Sony FD Trinitron WEGA KV-32FS120 32" TV

1 Answer

Sony Trinitron KV-29RS22 Blinks

Sounds like the high voltage is marginal.
My experiance is to not put money into a TV that is over ten years old. TVs stress out their electronic components worse than almost any other electronic product. After 10 years, there are so many parts that are ready to fail that your are probably wasting your money trying to get any more life out of it.
Another option is to wholesale replace the main board by sending it to Module Exchange at 972-298-1212,
or PTS Electronics 800-844-7871
Be careful on buying a new one though. Often times, these new technology ones are much worse. Always Google the model number of the set you intend to buy and add the word 'repair' or 'complaint' to see if it is one of the many models that are customer service nightmares being produced by even the most reputable companies today.
Hope ya fix it!

Feb 10, 2008 | Standard (CRT) Televisions

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