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I have a Sony KDP65WS550 and it will not power up. Initially it would blink five time fast after an unsucessful power up. Now it is blinking 10 times fast. I have read a few things on-line about IC8002 in the "D" board may be defective but was hoping you could help confirm.

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  • jwatrous_99 Dec 31, 2010

    What is the typical or recommended repair for the D board? I am an eletrical engineer specializing in electronics and would like to attempt a repair before paying a repair man. Please help with a little more direction on repairing the 10 blinking lights issue. Thanks.

  • jwatrous_99 Dec 31, 2010

    How do I get the TV to remain powered so that I can verify the correct IC and nodal voltages per the schematics? Is there an easy way to get it into "service" mode?

  • jwatrous_99 Dec 31, 2010

    Yeah, I had trouble with this. The wires are not long enough to get the tray to slide out for service. I cannot get the high voltage lines to provide enough slack. Any thoughts? Even if/when i get this to work, how to I get the TV to remain on? When I apply power it starts momentarily and then shuts back down.

  • jwatrous_99 Dec 31, 2010

    Replaced IC8002 and IC8005 in the D board and this fixed the problem. Please keep this fix for future reference to save your customers time. Based on internet chatter this is a common failure mode for Sony TVs. IC8002 is a MCZ3001DA for reference. This part supplies high voltage (drivier IC) to the rest of the TV and is apparently a common part to fail. A little more of this type of detail from FixYa would be helpful. Thanks, Jesse

  • jwatrous_99 Dec 31, 2010

    I replaced IC8002 (MCZ3001DA) and IC8005 (TL1431CZ) on the "D" board and this resolved the problem. It would be more helpful if you gave a little more technical detail in your responses. Unfortunately you did not give me anything that I did not already find on the web and through my own research. The MCZ3001DA appears to be a very common part to fail in the Sony designs. This part is discussed on several different web sites. Please keep this information for your records so that you can better support your customers. Unfortunately the $16 given to FixYa was a waste. Thanks, Jesse



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5 times red standby blinking error doe details are as follows:
a- White Balance Failure
b- Video out IC9101, IC9201, IC9301 could be faulty on CR, CG, CB boards
c- CRT drive IC0401 is faulty on MA board
d- G2 (screen volt) is improperly adjusted
e- any Picture Tube is defective

10 times red light blinking error code details are as follows:
1- Q8014 or Q8013 are shorted out on D board, replace them along with R8051
2- IC8005 is damaged on D board

If tv screen was turned high blight with either red, green or blue color and tv shut down with 5 blinking light that indicates bad picture tube of related color.

Current problem is 10 times blink so have to repair/ replace D board, then will check 5 times error problem.
Hope these info will help you.

Posted on Dec 31, 2010

  • 2 more comments 
  • Shahid Electronics
    Shahid Electronics Dec 31, 2010

    I would recommend to get service manual of KDP-65WS550 that has all schematics, part list etc
    D board repairing is not so difficult for handy person and being an Electronics Engineer, it would be easy for you.
    You can download service manual copy (free) from This Site and required parts are available in

  • Shahid Electronics
    Shahid Electronics Dec 31, 2010

    Connecting wires inside tv are long enough, slide out complete chassis an turn it upward as shown in below image for service position to take voltage readings on specific parts/ chips.
    All these info are available in service manual.

  • Shahid Electronics
    Shahid Electronics Dec 31, 2010

    Need to check and replace defective parts mentioned above to turn On tv, since tv has problem so it wont turn On.
    Regarding HV wires, remove fixing screws of HV Block to get it down to extends these wires but make sure that ground wire of HV Block is connected securely.

  • Shahid Electronics
    Shahid Electronics Dec 31, 2010

    Excuse me, you dais I did not provide you any helpful info?
    Your tv was not in front of me so all I could give you what I have in hand. If you were expecting me to pinpoint defective part then I can do if I was physically there, I'm really upset about such comments that I did not gave you helpful info.



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