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SHARP 29" TV switching off to Standby

Hi. I have a SHARP TV about 8 yrs old that switches off to Standby mode after using for about 20-25mins each time. Then it could not turn ON and stayed at Standby mode (even using remote or just push OFF then ON button - still back to standby mode). After about 15-20mins later I could switch on again by either using remote or push button. I checked all timer functions and there are no timer or lock that activated at all. Everything was as before. It just has this trouble of switching off and stay at standby mode after 20-25minutes of usage. Is this something that can be solved easily? What are the likely faults? Please advise.

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  • tanny Nov 10, 2007

    I tried changed the batteries of the remote control but it did not help. I now used the push button instead and it still switched off after some time. Seems like it is the detecting circuit/device that detected some problem after the TV is ON running for some time. I tried to get a more accurate timing and realised that it can sometimes last 50 mins or otherwise it can range from 20 to 30 miuntes. Is this a proble of the power supply regulator dying capacitors or due to some dry/cold solder (fatique joints)? Can soeone advise.

  • tarkaston Dec 14, 2008


  • Anonymous Mar 19, 2014

    There should be a code or some sort of trouble shooting for this fault



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Have you tried changing the batteries just to elimate this problem

change them

sometimes if the batteries are low in electronic devies, they send a wek signal to its receiver (your tv),

your tv gets confused and then switches itself to standby

if you have changed the batteries and this problem still persists

it can only then be th PSU or power supply unit, take it to your local tv repair shop of mastercare somewhere like that, its going to be cheaper to get it repaired than replacing the whole tv

PSU'S generally 20 to 50 pounds depending on model

don't deo it yourself though unless you've got a capacitor discharger (or a nice 25KV will be on its way to your body)

hop this helps mate, let me know how you get on

Posted on Nov 10, 2007

  • simon philips
    simon philips Nov 10, 2007

    continuity test the PSU (after cap discharge) will tell you if you have any dry joints mate




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