Question about Sony KP-57WS520 57" Rear Projection HDTV-Ready Television

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Kp-57ws520 9 blinking lights

Will you please give me the diode #s that are on the G-Board

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As per service manual,
D6116 part number 871908197
and
D6301 part number 650056721

Posted on Jul 30, 2009

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1 Answer

Sony KP-57WS520: Standby light blinking 9 times then repeats


thats caused by failed zero cross diodes on the G board. You can get the G board repaired from www.tvrepairworld.com replacement boards are no longer available for that model.

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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.

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Hey i have a sony kp-51ws520,, an its standby light is blinking 9 times .. but i can play with the remote every now an then an it will come on ..nothing wrong with picture or sound. can you help me out


The G board has a diode #6301. This board is a tan color farthest to the left. I went to Radio Shack and bought a 200V 1A silicone diode and replaced it. Worked like a champ. You will need a 15W pointed tip solder iron and a steady hand. You can replace the board if you like. I found one for $70 on ebay, but the diode is $1.

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1 Answer

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If the stnadby light blinks 9x, there is a leaky diode in the G board(5Volts standby circuit) causing the problem. I don't have the service manual but I remember it's the D6301. To make it sure check all 8 diodes including the one in zero detection circuit(all in G board). Hope this helps :)

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1 Answer

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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

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Diodes are blown on the G board ( POWER BD) replace the G board.

Jun 15, 2009 | Sony KP-57WS520 57" Rear Projection...

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I think I can help you whit this, This is a common problem with the "G" Board (power supply) it will need two diodes one of them is a royal PITA to solder/handle and about 2mm long surface mounted(very small).

Jun 09, 2009 | Sony KP-57WS520 57" Rear Projection...

1 Answer

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Yes, that's the G board.Replace D 6116 and D6301. 1 is on top of board and 1 is on bottom and very tiny in size surface mount type. You might want to order an extra of that one as they are easy to lose being so small. I have found the larger diode I think it's D6301 fails most often. Buy both but try that one first and test you may only need to do that one.

The TV Dude

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Don't replace the entire G board! that is expensive! The diodes are available from MCM electronics and can be easily replaced.

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