Question about Projection Televisions

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I have a Sony model kp53s75 rear projection tv and it will not turn on. (no picture or sound) The Standby light on the front blinks in 4 times. I have attempted to reset the unit by turning it off for an hour then plugging it in and it has not worked. The power fuse is ok. Do you have any suggestions? Thanks I have a sony model kp53s75 rear projection tv and it will not turn on. (no picture or sound) The standby light on the front blinks 4 times, I have tried to reset the tv by unplugging it for an hour and turning it on and off and nothing happens and yes there is power going to the tv. any suggestions? Thank You Rick rickeh32066@yahoo.com

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  • rickeh32066 Mar 05, 2009

    I have a sony kp53s75 projection tv and it will not turn on the light on the front of the tv blinks 4 times and I have tried to reset the tv by unplugging it for an hour and hitting the reset button and still nothing happens this thing cost me 2200 dollars with the extended warranty,does anyone have any ideas of what to do, I called a place and they want about 500 dollars to start,is there a part or parts that I can get online and do it myself and save some cash so I do not have to just end up throwing it out at the recycle place,Help rickeh32066@yahoo.com
    thanks Rick, also is this a common problem that someone knows the part numbers needed and what the part or parts are called? Thanks again.

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4 Answers

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Hi

In this case you have defective secondary oscillation for system thats why you cant see anything in picture and no sound.

Thanks!

Posted on Mar 05, 2009

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The projection bulb went out this happens alot with sony easy to replace. about 350$ for bulb you can do your self.

hope this helped
please rate well

Posted on Mar 05, 2009

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Hi,
Please following parts in TV for 4 blinks error.
IC1509(V out) is broken.
Q1505(V Pulse Buffer) is broken.
Let me know if need further technical help.

Posted on Mar 03, 2009

  • Shahid Electronics
    Shahid Electronics Mar 05, 2009

    If you are tech person then can understand easily what I told.
    I can help you out but since you rejected my solution and I do not know when you will see my comments.
    I have all tech info about your TV and can guide you step by step but it is very necessary that you should have electronics knowledge and repair experience.


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I think four blinks is a bad power supply or a convergence problem, I need to check the error code first.

Posted on Mar 03, 2009

  • Ginko
    Ginko Mar 03, 2009

    Hi, four blinks is a vertical deflection problem.

    You need to test the vertical deflection circuit. I report from service manual:

    Four blinks - No vertical Deflection (V STOP), Screen goes to a single horizontal line then the video signal muted. Check IC1509, Q1505


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The STANDBY light will flash if an issue is detected within the television. This can sometimes be resolved by simply following the steps below to reset the television.
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  2. Unplug the television power cord from the electrical outlet.
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please rate and have a great day.

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