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My L22 Technika TV fault?

My L22/14A Technika 22" tv suddenly lost picture without warning. Can someone advise me what the source of the fault may be and how I can test it

ajf
October 2010
my Set goes to mute after about halve/one hour and there is no way that i can recover the sound once it does this? The picture is good, pity about the sound though.

john
May 2012
The stand by light is flashing red instead of being on all the time and the source and channel buttons wont work

Nicola
December 2010
Yes I have normal sound and unfortunately not a flicker from the screen on any button press. I have checked the power board output and I have 12v on both channels of the connector

ajf
October 2010
oes it have sound?

tj1835
October 2010
if you press a button do see a picture for a few seconds and a little whigh pitch buz sound?
if not try and see!!

tj1835
October 2010
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