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    Moderated By: claudio
    Forum:  Television Troubleshooting
    Post Reply in Topic: ---Jehill, need you advice---
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    Topic Review
    Baethe
    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
    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
    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
    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
    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
    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
    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
    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
    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
    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
    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
    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
    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
    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
    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).




    BobF
    Sonyphile
    Joined: Feb 17, 2004
    Posts: 643
    From:
     Posted: 2007-08-29 15:50   





    On 2007-08-29 15:45, Baethe wrote:
    another diode, (but repair guys were not specific as to which one).





    Thanks for the update.  Hopefully, there's not some other problem that's causing the diode failures.

    Best of luck with the repaired set!

    Bob

    aprd6289
    Sony Fan
    Joined: Sep 04, 2008
    Posts: 4
    From: USA
     Posted: 2009-06-10 04:03   
    9-blink problem on a Sony KV-32FS320

    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?

    How dangerous is this? Is there a shock risk?





    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!





    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.





    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? 





    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.





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


    aprd6289
    Sony Fan
    Joined: Sep 04, 2008
    Posts: 4
    From: USA
     Posted: 2009-06-10 04:12   
    I edited the info on discharging the electricity without killing oneself and included the link that gives full detailed instructions with photos I love my KV-32FS120, but it ain't to die for!!!


    -----------------
    For tv troubleshooting package, Private Message claudio or jehill w/email and what package you need.

    Package Title/Applicability:

    (9 Blinks, ZCD/KV27FS320, KV32FS120, KV32FS320, KV36FS120, KV36FS320)

    [ This message was edited by: aprd6289 on 2009-06-10 04:18 ]

    mbt_junkyard
    Sonyphile
    Joined: Sep 15, 2008
    Posts: 661
    From: EU
     Posted: 2009-06-10 06:37   
    Almost (!) all newer Trinitron tubes use two pairs of electrostatical plates to achieve horizontal static convergence. The voltage difference between both plates causes the red and blue beams to converge or to diverge. The only external component is a variable resistor, marked H-STAT. This potentiometer, together with a resistor which is inside the CRT, will cause the high tension of the anode to "bleed" away. For that reason a Trinitron tube is discharged automatically within 20 seconds after switch off, so no additional discharging is necessary.
      
    Note: This only works as long as the CRT-socket is connected and the internal resistor of the CRT is not broken, which happens in very, very rare situations. Also some 16" and 20" Sony tubes does not have a "real" Trinitron gun, but use a Philips gun with magnetic horizontal static convergence. These tubes must be discharged manually!

    [ This message was edited by: mbt_junkyard on 2009-06-10 13:47 ]

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