Question about Sanyo DS24424 24" TV

1 Answer

WILL NOT POWER ON

POWER SWITCH ON THE SET I HEARD A KLICK SOUND {RELAY} AND A COUPLE OF SECOND I HEAR A CLICK SOUND AGAIN.I TRY TO MEASURE B SUPPLY THERES 130VOLTS WHEN FIRST CLICK OF THE RELAY AND THEN DROPS TO 80VOLTS ON THE SECOND CLICK OF RELAY. I SUSPECT THE FAULT COME FROM IC LA76952DC.

Posted by bb54 on

  • 2 more comments 
  • bb54 Sep 23, 2007

    Thanks Modern. I already isolate the Hor section {output}but still got the same problem. Could u please provide me the circuit discription of the IC LA76952DC {jungle IC} I dont have schematic diagram of this TV set. Again thanks.

  • Noahh Jun 15, 2008

    Same problem here. It clicks on, stays on for about 2 seconds (with no video), then clicks off. I can make it do that twice and then nothing. I have to unplug and then plug back in for it to do it again. Is it worth the repair?

  • Anonymous Sep 16, 2008

    Same exact problem.

  • SeaCapt Oct 19, 2008

    Same problem, tv clicks, hear sound for about 2 seconds, another click and shuts down, no sparks no smoke no video.

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1 Answer

Anonymous

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Isolate power from hor.output section. if voltage becomes normal 130v &it does not drop then power supply is ok. now check hor output for leaky compnents near eht specially capacitor & diode. check hor output tr. at last eht. you can clean print near eht.

Posted on Sep 23, 2007

  • 1 more comment 
  • Anonymous Sep 23, 2007

    as you have isolated h/output but the problem still persists(voltage is dropping) means 100% now it is clear that problem in power supply only.
    please check
    1 cap or zener in switching reg. line.
    2 one diode might be open in bridge rec. ckt
    3 if set is old main filter cap dry.
    4 low input supply.

  • Anonymous Sep 23, 2007

    As per circuit discription of the IC LA76952DC {jungle IC} schematic diagram of this TV set not required as it is a jungle ic & our problem in p/supply.
    but i assure that i will send data with in day or two.
    good luck

  • Anonymous Sep 23, 2007

    circuit discription of the IC LA76952DC
    please refer web site
    www.datesheetcatalog.com
    it is a SANYO make so check in SANYO DATA.

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