Question about Sharp VT-G21 21 in. TV/VCR Combo

1 Answer

21v-l70m i have problem with my tv model 21v-l70m sharp. intermittent shutdown. once power on then after a few minutes the unit will shutdown.then need to switch off for a few minutes before turning on the unit again.

Posted by edmon magtalas on

  • Anonymous Jul 28, 2008

    turn the 21V-L70M unit after 3 minutes it will turn off, wait for many minutes before you can turn it on.... I believe this is a common problem for sharp tv's..

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1 Answer

Anonymous

Sorry bat you heve need the asistence califications your problems,needs oscilografition/time

Posted on May 23, 2007

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Good day masters,, how can i fix my tv set 21V-L70M power shutting down after a few minutes..

Check and replace damaged component/s at its horizontal scan output section circuit. Check the LOT (Line Output Transformer) too for damage. Replace the horizontal scan output transistor. Check the input voltage to LOT. If the voltage is absent check the feeder resistor; if any. If you wish to get some details; check the site linked here. Pull up older posts.
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These sets are quite outdated, there are fewer and fewer repair shops out there for them.
The problem is most likely the power supply (internal), this can be repaired quite simply if you know what to look for. Other problems may or may not include a blown IC, fuse, lamp, or the tube itself.
The cheapest option you've got is to buy a new TV I'm afraid.
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