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    Moderated By: claudio
    Agoraquest Forum Index Television Troubleshooting
      
    ---Jehill, need you advice--- Dashboard
    Replies: 18 | Views: 5,441
    Last Reply: June 10, 2009, 6:37 am

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    jehill | BobF | Ra | Baethe | aprd6289 | mbt_junkyard |
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    Author ---Jehill, need you advice---
    Baethe

    Rank: Sony Fan


    Joined: Jul 23, 2007
    Posts: 6
    From: Houston

      Posted: 2007-07-23 15:21

    Jehill-

    I need your advice. I have the same 9-blink problem on a Sony KV-32FS320 tv set that others you've helped have.

    From what I read, I need to check out the solder joints on the power board, and diodes D640, D641, D646 and Q690. Is that about right?

    HOWEVER, here is where I need the most advice. How dangerous is this?

    Is there a shock risk here? If so, how much of a risk? I'm not the bravest man in the world, but I'll take one for the team to save a buck, I'd just like to be able to walk afterwards.

    Anyway, I'd appreciate your thoughts on all of it.

    Brad
    Houston, TX


       


    jehill
    Premium Member

    Rank: Sony Senior Advisor


    Joined: Mar 13, 2003
    Posts: 14278
    From: Sewell, NJ

      Posted: 2007-07-23 19:16

    Start out by unplugging the set and discharging the HV from the picture tube to the chassis.  Then, look for large electrolytic capacitors and make sure that they are discharged.  Its best not to use a direct short.  A 10 ohm, 5 watt resistor should work just fine.

    For the KV27FS320, KV32FS120, KV32FS320, KV36FS120 and KV36FS320, 9 blinks, pause, 9 blinks means that there is a problem with the ZCD (zero crossing detector) circuitry.  There is a service bulletin for the issue.  If you would like a copy, go to your Inbox at the bottom of the left column and send me (jehill) a private message (PM) with your request.  Be sure to include your email address!


    -----------------
    -John

    Sony A/V System: KDL-55XBR8, BDP-S550 and AVD-LA2500PKG, consisting of AVD-C70ES Super Audio CD/DVD Receiver, 4 SS-LA500ED surround speakers, 1 SS-LAC505ED center channel speaker and 1 SA-WD200 Active Subwoofer


       
    Baethe

    Rank: Sony Fan


    Joined: Jul 23, 2007
    Posts: 6
    From: Houston

      Posted: 2007-07-23 21:15

    Thanks very much...sent you a PM just a second ago.

    Brad



       
    BobF

    Rank: Sonyphile


    Joined: Feb 17, 2004
    Posts: 643
    From:

      Posted: 2007-07-23 22:02






    On 2007-07-23 19:16, jehill wrote:
    Start out by unplugging the set and discharging the HV from the picture tube to the chassis.  Then, look for large electrolytic capacitors and make sure that they are discharged.  Its best not to use a direct short.  A 10 ohm, 5 watt resistor should work just fine.




    John,

    How exactly do you discharge the High Voltage from the picture tube to the chassis?

    How do you identify/locate the large electrolytic capacitors?

    What do you use to hold the resistor while discharging the capacitors? 

    Thanks!

    Bob


       
    jehill
    Premium Member

    Rank: Sony Senior Advisor


    Joined: Mar 13, 2003
    Posts: 14278
    From: Sewell, NJ

      Posted: 2007-07-24 12:50




    On 2007-07-23 22:02, BobF wrote:
    How exactly do you discharge the High Voltage from the picture tube to the chassis?  Connect one end of the ground wire with series resistor to the chassis and the other to a flat blade screwdrier.  Then, lift the cap on the CRT and slip the screwdriver under the cap to discharge the CRT.

    How do you identify/locate the large electrolytic capacitors?  Look for large tubular objects.  The connections are on the bottom of the board.

    What do you use to hold the resistor while discharging the capacitors?  Its best to prepare a ground wire in advance and push insulated tubinf over the connection.





    -----------------
    -John

    Sony A/V System: KDL-55XBR8, BDP-S550 and AVD-LA2500PKG, consisting of AVD-C70ES Super Audio CD/DVD Receiver, 4 SS-LA500ED surround speakers, 1 SS-LAC505ED center channel speaker and 1 SA-WD200 Active Subwoofer


       
    Ra

    Rank: Sonyphile


    Joined: Oct 21, 2006
    Posts: 538
    From: Mass

      Posted: 2007-07-24 20:20

    He's going to kill him self and further damage the set. to do this things require some knowhow , good luck don't blame Jehill. 


       
    Ra

    Rank: Sonyphile


    Joined: Oct 21, 2006
    Posts: 538
    From: Mass

      Posted: 2007-07-24 20:41

    GO HERE. http://riddledtv.com/repair/journal/DischargeCRT/index.html


       
    BobF

    Rank: Sonyphile


    Joined: Feb 17, 2004
    Posts: 643
    From:

      Posted: 2007-07-25 00:14






    On 2007-07-24 12:50, jehill wrote:






    On 2007-07-23 22:02, BobF wrote:
    How exactly do you discharge the High Voltage from the picture tube to the chassis?  Connect one end of the ground wire with series resistor to the chassis and the other to a flat blade screwdrier.  Then, lift the cap on the CRT and slip the screwdriver under the cap to discharge the CRT.

    How do you identify/locate the large electrolytic capacitors?  Look for large tubular objects.  The connections are on the bottom of the board.

    What do you use to hold the resistor while discharging the capacitors?  Its best to prepare a ground wire in advance and push insulated tubinf over the connection.








    Thank you very much for the helpful information!

    Bob


       
    BobF

    Rank: Sonyphile


    Joined: Feb 17, 2004
    Posts: 643
    From:

      Posted: 2007-07-25 00:16






    On 2007-07-24 20:41, Ra wrote:
    GO HERE. http://riddledtv.com/repair/journal/DischargeCRT/index.html


    Thanks Ra!

    Excellent link!

    Bob


       
    Baethe

    Rank: Sony Fan


    Joined: Jul 23, 2007
    Posts: 6
    From: Houston

      Posted: 2007-08-07 17:27

    FYI-

    I tried to repair myself but realized I was in over my head when I could not figure out how to remove the CRT lead wire from the circuit board.  

    I sent TV off for repair.

    Indeed, a diode was faulty, the repair guy was not specific as to which one it was.

    Anyway, entire repair set me back about $225.







       
    BobF

    Rank: Sonyphile


    Joined: Feb 17, 2004
    Posts: 643
    From:

      Posted: 2007-08-07 17:56






    On 2007-08-07 17:27, Baethe wrote:
    FYI-

    I tried to repair myself but realized I was in over my head when I could not figure out how to remove the CRT lead wire from the circuit board.  

    I sent TV off for repair.

    Indeed, a diode was faulty, the repair guy was not specific as to which one it was.

    Anyway, entire repair set me back about $225.







    Thanks for the update!

    $225 is not unreasonable for a successful repair.

    Bob


       
    Baethe

    Rank: Sony Fan


    Joined: Jul 23, 2007
    Posts: 6
    From: Houston

      Posted: 2007-08-23 14:34

    ---UPDATE---

    It's been 2.5 weeks or so since the initial repair...

    TV has croaked again.

    The unit has begun offering up the 9-blink code regularly.

    Called repair place, they said to bring it in...and that they'll only charge me for parts, since labor is still covered under warranty.

    Thought'd I'd post this update for others with the same 9-blink problem.

    Brad

     
     



       
    Baethe

    Rank: Sony Fan


    Joined: Jul 23, 2007
    Posts: 6
    From: Houston

      Posted: 2007-08-28 14:02



    FINAL UPDATE (because if it breaks again, I'm tossing the set)

    TV repaired for no charge - repair guys apologized.

    Everything appears to be working great.

    Thanks for all the free advice.






       
    BobF

    Rank: Sonyphile


    Joined: Feb 17, 2004
    Posts: 643
    From:

      Posted: 2007-08-28 23:57



    Thanks for the update.

    Did they tell you what they fixed?


       
    Baethe

    Rank: Sony Fan


    Joined: Jul 23, 2007
    Posts: 6
    From: Houston

      Posted: 2007-08-29 15:45

    another diode, (but repair guys were not specific as to which one).





       
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