Question about Sony KP-53HS30 53" Rear Projection HDTV-Ready Television

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Sony KP53HS30 standby & stereo lights on no picture or sound. The only way to turn it off is by pulling the plug. It started a couple of days ago when it took about an hour or more to have a clear picture but yesterday I lost picture while watching TV. Today I lost both sound and picture.

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  • hector97 Dec 11, 2008

    I tried the solution given but I still have the same problem.

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May be there will be problem in power supply section in your tv...which also leads to damage the other parts like picture and sound...so check the power supply section in your tv...

Posted on Dec 11, 2008

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Hi and welcome to FixYa,

Initially, pls determine the error codes. This would refer to the number and sequence the blink. The interpretation of the codes maybe found here.

Depending on the code and the area/component it may refer to, the unit has to be opened up for a look and see.This of course would require opening the unit, perform voltage measurements,determine faulty component and subsequent part(s) replacment. further, a fair familiarity of electronic components/circuitry and safety procedures, use of a DVM and a soldering iron would be required. It would be to your added advantage access to a service manual (Sony Chassis RA6) or at the very least a schematic diagram with voltage readings.Should you be uncomfortable performing a DIY (do-it-yourself), perhaps your best bet would then be to seek the services of a qualified professional.

Good luck and Thank you for using FixYa. Happy Holidays.

Posted on Dec 11, 2008

  • Louie  Role
    Louie Role Dec 12, 2008

    Hi again,



    Any updates or developments so far?





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What color is the stand by light when you try to turn it on? Is it blinking? If so, how many times, should be a pattern. Also, If I were to have you attempt to have you check certain components, what are your electronic skills like? If you don't know what is dangerous or not in this tv, then you should not attempt to repair it and should have a local shop take it. Please answer the above questions and I will post back further information

Posted on Dec 11, 2008

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Let me know do you want to repair it at own and have service manual?
I can guide you in this.

Posted on Dec 11, 2008

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What about self-test system. How many red blinks you have in stand by mode. If its seven its board or power supply. High voltage shutdown. Check power supply
If its six ---no horizontal (H STOP), no raster, goes to the blinking selfdiagnosis function immediately.
Good Luck

Posted on Dec 11, 2008

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There is a short tracking on the main board which needs to be repaired.every time it tracks short it creates a problem there by damaging the device more n more.the main board needs to be repaired by a qualified technician to solve this problem.dont try things that can spoil ur device further.

Posted on Dec 11, 2008

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First, try the unplug AC; wait 5 minutes; plug back in; try again method. Obviously, if the service menu comes back up when entered, then use Gregg's method. Also try connecting devices to the various inputs including the "Component" inputs (Red, Blue, Green). A DVD player might have these or as a last resort connect a yellow (composite) cable to the Green connector.
Second [Danger mode]: turn set off; enter code to go into service menu (TV should turn on with no picture); press "8" then "enter" [/Danger Mode] This resets TV to last saved mode. Probably won't work but worth trying.

Third [Danger Will Robinson Mode] Same as the above but with "7" instead of "8" [/Danger Will Robinson Mode]. The manual says to Never do this because it puts the set back into pre factory setup and it will really mess things up, possibly beyond recovery. You would want to be armed with Every possible data value written down. You would probably need to visit the AVS forum thread on "Sony Service Codes" because many, if not, most of the settings are undocumented by the Factory in the service manual.

An absolute last ditch method does require a servicer to install new eeproms (hopefully from a working circuit board) to get the TV into a visible position to allow completion of setup

Posted on Dec 08, 2008

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Try first to reset the unit for about 6 hours being unplug from the power outlet and after that plug it back in and check if you still have the same problem,...

Posted on Dec 08, 2008

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Hello worksofgrace,

I gave this advice earlier, but since your problems is just about the same, I hope this helps.

This problem is linked to a power supply issue. The SSB is part of the power supply chain and will cause system failure if the board is defective. I have seen to many of these type of modular power supply boards fail. The shutdown circuit is detecting excessive voltage/current, and in the process of turning off the set it may have blown something else. I am begining to suspect a design flaw, which happens from time to time. I would suggest having a qualified TV repair person take a look at the TV and work on it.

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