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Meins321
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Last Activity: 12-05-2015, 05:16 AM
Joined: 09-21-2012
Location: Hannover
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  • Meins321
    replied to Sony KDL-46CX525 6x blinks backlight dead?Possible replacement with LED's?
    in Troubleshooting TVs and Video Sources
    Re: Sony KDL-46CX525 6x blinks backlight dead?Possible replacement with LED's?



    The first link gives me access denied and the second one says no thread on the forum...

    Ok will check the transformers of the old inverter! Can i just measure resistance while they are still soldered in?


    Can i replace the inverter with:

    Inverter Board LJ97-02743A SSI460_12[B]A[/B]01 from a philips?
    Is it the same as the SSI460_12[B]F[/B]01 maybe just a different revision?Re: Sony KDL-46CX525 6x blinks backlight dead?Possible...
    See more | Go to post
    Last edited by Meins321; 12-04-2015, 02:31 AM.

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  • Meins321
    replied to Sony KDL-46CX525 6x blinks backlight dead?Possible replacement with LED's?
    in Troubleshooting TVs and Video Sources
    Re: Sony KDL-46CX525 6x blinks backlight dead?Possible replacement with LED's?

    Inverter is a Samsung,
    Type: SSI460_12F01
    Serial Number: 03319AWB18T354B0

    @CapLeaker @anmol: i can't run the inverter long enought to keep the backlight warm, i will look at the inverter closely if there are solder cracks...
    As the lcd shows some picture very shortly i think it is the ccfl backlight not the inverter itself because it tries to run, and then the tv goes to 6 blink...
    Maybe it is the powersupply but then i need to fool the connection to it from the inverter...
    See more | Go to post
    Last edited by Meins321; 12-02-2015, 02:46 AM.

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  • Meins321
    replied to Sony KDL-46CX525 6x blinks backlight dead?Possible replacement with LED's?
    in Troubleshooting TVs and Video Sources
    Re: Sony KDL-46CX525 6x blinks backlight dead?Possible replacement with LED's?

    thank you for your fast reply, well it would be nice to take out the inverter and run the telly just wihtout it

    does anyone know how to do this?

    Inverter Ok gibes me 3,2~3,3V from the powersupply to the logic board, should be possible to create with some resistors from the 12V regulated supply on the powersupply

    If i can get it to work with picture and sound but no backlight
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  • Meins321
    started a topic Sony KDL-46CX525 6x blinks backlight dead?Possible replacement with LED's?
    in Troubleshooting TVs and Video Sources

    Sony KDL-46CX525 6x blinks backlight dead?Possible replacement with LED's?

    Good evening everyone!

    I do own a Sony KDL-46CX525 witch blinks 6x Times at startup and won't display any picture..

    the Inverter looks fine, no burnt spots or anything.

    Tested the startup in full darkness, could see a logo/menü something for a split second.. thus inverter or ccfl fail. (could be powersupply also?)

    What should be replaced or done?

    Can i fake the inverter ok signal and check the lcd if it is working with a LED torch?

    How much voltage is on the inverter ok on the 24V unregulated output side?...
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  • Meins321
    replied to Sony KDl 55hX823 6 blinks
    in Troubleshooting TVs and Video Sources
    Re: Sony KDl 55hX823 6 blinks

    If the 6 blinks comes back after inverter error has been deactivated it might be the powersupply then?

    And in this case you don't have every screw connected..thus ground problem?
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  • Meins321
    replied to Bad BN44-00264A PSU Board for Samsung LN40B610A5F LCD
    in Troubleshooting TVs and Video Sources
    Re: Bad BN44-00264A PSU Board for Samsung LN40B610A5F LCD

    @johnboy1313
    Thank you for that link... if the backlight is gone i will trash it for sure, replacing the ccfl is too expensive here in germany....

    it would be nice to cut out the inverter and "fake" the backlight on is good signal, and then just use safely 12V LED strips to run it ^^

    Anyone knows how to fake "inverter OK" to the mainboard? Maybe with some resistors on the powersupply output to get the same voltage levels as with a working inverter?
    See more | Go to post

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  • Meins321
    replied to Bad BN44-00264A PSU Board for Samsung LN40B610A5F LCD
    in Troubleshooting TVs and Video Sources
    Re: Bad BN44-00264A PSU Board for Samsung LN40B610A5F LCD

    i couldn't see any burn marks, is there any way to check the transformer itself?

    Tried to picture them from top to bottom..see attached pics

    The main caps show 390V if you plug the tv in, then it settles down quickly to 315~320V DC.

    If you press the on button on the front the backlight goes on and the voltage shots up to 390V and stays there, while the tv plays start melody and cycles on and off with its backlight. Doesn't show any menu if i press the menu button :-(

    should...
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    Last edited by Meins321; 11-21-2015, 07:40 AM.

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  • Meins321
    replied to Bad BN44-00264A PSU Board for Samsung LN40B610A5F LCD
    in Troubleshooting TVs and Video Sources
    Re: Bad BN44-00264A PSU Board for Samsung LN40B610A5F LCD

    I have got a BN44-00264A too inside my 40" Sony but all my fuses are ok...

    it's just the trv that powercycles on and off, the backlight comes on and it plays a sound then goes off again....

    I concluded from other sources that you need to replace:
    UP801S /ICP801 Power IC FAN7530
    RP809/RP810/RP811/RP812 1M Ohms

    i did recapp the whole powersupply with still the cycling on and off error and then replaced RP809 up to RP811 with a single 3M Ohm standard wired resistor,...
    See more | Go to post

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