Question about Sony KP-51HW40 51" Rear Projection Television

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My sony KP-51HW40 TV shuts off

After just about 15 minutes our TV shuts off, the led light blinks 8 times over and over. We shut the TV off for about 5 minutes but it will only stay on for about the same amount of time?? It started out just doing it once in awhile, but now its happening all the time. Any help? Thanks

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Re: My sony KP-51HW40 TV shuts off

The eight blinks indicates you have a high voltage error. you will need to replace the d board. the part number is A-1348-038-A.

Posted on Oct 31, 2007

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TV turns red,shuts off, stand-by light blinking 8Times

Eight 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.

Feb 27, 2014 | Sony KP-51HW40 51" Rear Projection...

1 Answer

My KP-51HW40 clicks off after running for a period. The red power light blinks when it goes off but screen stays dark. When TV is shut off for a while it restarts and runs fine. The "On"...

KP-51HW40 shuts off due to incorrect white balance and blue arch lines is an evidence of that incorrect white balance. I hope tv standby red light would flashing 5 times then 3 seconds pause and again 5 times when tv shuts down.
This is rear projection tv that has three picture tubes (red-green-blue) inside to generate picture that projected at front screen. These three picture tubes must be drive with correct drive voltage to produce good picture of each color.
Solution for your tv problem is Screen Voltage adjustment that can be done easily if you are handy with electronics stuff repair.
Let me know your expertise level to guide you more and if you feel unconformable by tv repair then local tv repairman will help you to adjust white balance in tv.
Hope these info will help you.
Let me know if you have additional questions.

Nov 05, 2010 | Sony KP-51HW40 51" Rear Projection...

1 Answer

Screen turned orange, heard a sizzle sound tv

A capacitor has burned out. It may be on the motherboard or power supply.

Jul 09, 2009 | Sony KP-51HW40 51" Rear Projection...

1 Answer

5 flashing light code,unplug CR board,now 8 flashing light code

If you put the "CR" board back on, the error code will once again be 5 blinks. Your problem is likely the TV's IK blanking circuit. The Kine driver ICs on the CRT sockets boards CR, CB, and CG need replacement along with a few components in the 200 volt supply to the circuit.

Feb 12, 2009 | Sony KP-51HW40 51" Rear Projection...

2 Answers

Green screen and shut down

TV screen flashes with Red lights for few times. sometime it shut down TV or red color is lost showing pictures without Red looks terrible. Any solution

Sep 17, 2008 | Sony KP-51HW40 51" Rear Projection...

4 Answers

Green flashes then tv turns off

or a new lamp. you could first replace the lamp.
the screen might work fine for a couple of seconds, but then it fades away or deteriorates. This means the lamp is going bad.

Aug 23, 2008 | Sony KP-51HW40 51" Rear Projection...

1 Answer

KP-51HW40 - Auto shut down problem

I had the same problem. i was told by one of these so-called experts @ fixya that my flyback transformer needed to be replaced (the 8 blinks on the standby was the indicator). but i recently replaced it and im having the same problem. sorry. no advice. good luck.

Jun 18, 2008 | Sony KP-51HW40 51" Rear Projection...

1 Answer


next time it shuts off notice if the led is blinking a certain amount of times to indicate an error code. If it doesnt blink my guess would be a solder problem around the flyback or the yoke plugs.

Mar 18, 2008 | Sony KP-51HW40 51" Rear Projection...

1 Answer

Kp-51hw40 problem

your blue tube is shorted unplug blue crt board see if set comes on and stays on!

Nov 07, 2007 | Sony KP-51HW40 51" Rear Projection...

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