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Vestel switches off after 10 secs

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thegasman:
I have a Technosonic 37" screen which has developed a fault where it switches off after about 10 - 30 seconds. While it is on the screen looks fine and I can use the menus. After it goes off the standby light goes off too and it needs to be left a few hours before it will switch on again.

Vestel 17MB15E-7 and 17PW15-8. No obvious damage to capacitors or fuses etc.
Any ideas?

Thanks.

thegasman:
Well I suspected the power board, so I replaced it, but to no avail.  :wallbash:

When the TV is on it works perfectly. Sometimes it will go a few hours now before switching off. Also, I have noticed that the buttons on the TV (on/off, volume, menu) don't work, so I am beginning to suspect it may just be a dodgy button PCB that is switching the set off.

Martin

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