Question about Sony KP-51WS520 51" Rear Projection HDTV-Ready Television

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T.V. won't turn on

I have a 51 inch sony projection t.v. model number KP-51WS520. I tried to turn the tv on the other day and the standby light just blinked and it would not turn on. i tried it later and the light blinked for a while but i kept hitting the power button and eventually turned on, the picture was just fine. but it kept doing this for several days and now it wont turn on at all, the standby light just blinks. What is the problem and how do i fix it. Is it a part i can replace myself, im no tv repair man but i have a fair amount of electrical and mechanical experience. thanks in advance

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  • 6 more comments 
  • blackcloud Nov 02, 2007

    Same problem here.  The indicator light blinks 6 times pauses and 6 more times.  Any ideas?

  • Anonymous Nov 24, 2007

    have same problem but light blinks nine times

  • Anonymous Jan 05, 2008

    Same problem as previously described with the blinking stand by LED. Manufactured in 2004 by Sony Mexico I am surprised that a HV cap bad,xformer defective, bad connection problems or an open pico fuse has occured already.

  • dcao Jan 08, 2008

    i have same problems. and standby blinks 9 times

  • lhito boy Jan 27, 2008

    I have same problems. standby blink 9 times.

  • Hockeygus Feb 23, 2008

    we have a KP-51WS520 sony rear projection TV purchased new in 2005 won't turn on, just blinks on standby, sometimes eventually turns on. This only started when we swicthed from regular cale to a new HD - PBR box purchased from Future Shop, but still on same cable, not satellite. Need help!

  • hddude Feb 28, 2008

    tv won't turn on standby light flashes 6 times. help!!

  • PressureDrop May 04, 2009

    EXACT same thing as the original post! First couple times it happened, pressing power repeatedly eventually turned it on. A couple days later it never turned on again. :(



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PCB repair should be done by a qualified tech. Your problem could be HV cap bad,xformer defective or bad connection problems and pico fuse open. Check 2KV cap near xformer.

Posted on Sep 26, 2007


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1 Answer

I have sony wega sony wega tv kp 51ws520 no turn on just standby light blinking and i lost remot plz help me

Is the light blinking 9 times? If so thats a very common problem caused by failed diodes on the G board which will need to be replaced.

Jul 19, 2011 | Sony KP-51WS520 51" Rear Projection...

1 Answer

No picture ,standby flash 10 times and tv turns off

10 times standby flashing indicates problem of High Voltage Protection and need to check following parts in Sony KP-51WS520 rear projection tv.
Q8014 or Q8013 have shorted replace along with R8051 on D Board
IC8005 is damaged (D Board)
Hope these info will help you. If you have no experience of electronics stuff repair then local tv repairman is an option to get help.

Nov 27, 2010 | Sony KP-51WS520 51" Rear Projection...

1 Answer

Sony kp-51ws520 when turned on just has standby light flashing . the rest is all dead, no picture or voice.

Standby flashing light shows that tv got some internal problem. How many times standby light is flashing is info that provide info about what section of tv got problem.
Count standby light blinks and let me know, there would be 3 seconds long pause in blinks so count pause to pause.

Jul 21, 2010 | Sony KP-51WS520 51" Rear Projection...

2 Answers

The standby light just blinks when i try to turn it on and it wont turn on

Count the number of blinks of the standby light. It will bink a count, pause and do it again (Common counts are 2 -9) Give this count to a Sony service center and they can help you know what the issue is. (Probably the lamp)

Apr 17, 2010 | Sony KP-51WS520 51" Rear Projection...

1 Answer

I have a 51 in. Sony model kp-51ws520. when I turn tv on I get sound by no picture. Standby light blinks 5 times then shuts off . If I power it back on, sound no picture then standby blinks 10 times after...

Ck small blue capacitor next to hori output Transistor 2k volts they have been known to go Bad, if its OK replace Both of your STK ICs STK392-110s use 180s Mats has them 1-800-628-1118

Mar 23, 2010 | Sony KP-51WS520 51" Rear Projection...

1 Answer

Sony KP-46WT520 TV won't come on.

That is a diode in the sub power supply, it is a small board with only a few parts on it to the left of the d board, for the zero crossing detector. D6301 sony part number 6-500-567-21

Sep 02, 2009 | Sony KP-51WS520 51" Rear Projection...

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2004 Sony 52" Wega dont turn onnthe stand by light stays flashing. This TV first started by taking long to turn on and now and then would turn off until one day it just didnt turn on and the standby button...

When that model Sony shuts down the LED starts blinking as you say but it is telling you something because it blinks a certain number of times and then pauses and repeats the number of blinks. Count the number and then I might be able to help you narrow down where the trouble is.

Jun 14, 2009 | Sony KP-51WS520 51" Rear Projection...

1 Answer

TV will not come on. TV standby light blinks nine

You need to call a Sony service center for this problem. It will cost you less in the long run.

Apr 16, 2009 | Sony KP-51WS500 51" Rear Projection...

1 Answer

KP-51WS520 wont turn on - standby & timer lights on constantlly

You need to check supply volts on main micro IC702 on main board of Sony KP-51WS520 TV.
If you have experience of big TV repair then I would recommend to get service manual of TV from any online store and check above said IC supply volts. TV must give error by blinking light in case any problem in drive circuits and if main micro fried, no error signal will be there.

Dec 05, 2008 | Sony KP-51WS520 51" Rear Projection...

1 Answer

Sony Wega stanby light blinks 5 or 6 times

When a Sony TV flashes five times, that means that there is an AKB circuit fault.
Six blinks is also a fault related to video problems, and regards a fault concerning the digital board and the Jungle IC (the main CPU).

This means that there is something wrong with the video.
Try first unplugging power for few hours, if that does not work, call a technician, as several IC and components must be tested and eventually replaced.

Nov 22, 2008 | Sony KP-51WS520 51" Rear Projection...

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