Question about Sony KDL40EX400 40 in. HD-Ready TV

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I have the three blink problem and I know this is a OVP and I need to chek t602 and somthing else but what the hell are they?

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  • Sony Master
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Over Voltage Protection circuit and the T602 is a transformer

Posted on Oct 10, 2010

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3 red blinks


Three 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. To get more details, http://electronicshelponline.blogspot.com/ Blinking codes details to Sony Trinitron TVs are given.

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Sony trinitron troubleshooting


Three blinks to standby light to Sony Trinitron TVs denotes; [Three 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. ]. Check the output voltage from SMPS. It will be more than normal. Check all the solder terminals at the primary side of the SMPS, for dry solder. Re-solder all the suspected solder terminals, by applying a little more solder, without making any solder bridge short in between adjacent solder terminals. If you wish to get more details about blinking codes to Sony TVs, check the site linked here.http://electronicshelponline.blogspot.com/ Pull up previous posts there, either by its left side bar, or view it in Timslide option.

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1 Answer

Three red blinking lights


I would first always check the lamp to make sure that its not burnt out. On my 50 XBR1 the lamp door is on the right side of the tv. But here is the code for three blinks of the light,

3 times, Diagnosis: +B overvoltage (OVP). Possible causes: IC501 is faulty (G board), IC5002 is faulty (G board). Symptoms of the problem: TV has entered standby mode.

Hope this helps.

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1 Answer

Light blinks three times but dont turns on


  • Three 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.

It may be made up of a few faults but the power supply is a good place to start.
Hope this helps

Dec 21, 2010 | Sony FD Trinitron WEGA KV-30HS420 30" TV

3 Answers

Blank screen. When I turn it on the Stand by/Timer light blinks twice and the Stereo light blinks once.


THREE Blinks = 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.You need to replace these components. Just as a tip it would be better to have this done professionally rather than DIY Please rate our help to keep the service online

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1 Answer

Is the t603 and r672 part of the tv or the actual circuit breaker


Three 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.

DOES THIS ABOVE issue have anything to do with Cooling FAN?
I cannot hear the cooling fan come on when first turned on like
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May 05, 2009 | Sony Grand WEGA KDF-50WE655 50" Rear...

1 Answer

Lamp indicator flashes red 3 times every 5 secs.


Three 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.

Jan 31, 2009 | Panasonic PT-44LCX65 Television

1 Answer

Sony tv went off


Three 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.

Jan 31, 2009 | Sony FD Trinitron WEGA KV-32FS100 32" TV

1 Answer

Power problem


Three 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.

Jan 30, 2009 | Panasonic PT-47WX42 47" Rear Projection...

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.

Jan 25, 2008 | Toshiba CN36X81 TV

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