Teac T22DVDB19A TV and DVD unit 22" flat screen.
When turned on , works perfectly for shorttime then returns to standby.
If turned on again works for shorter time.
So its time and temprature fault, but what?
Already replaced All Electrolytics on power supply, no change!

M Carter, December 2011

Monitor the PSU output voltages from power-up to establish if a rail is going down. A series low value resistor should guide you as to whether it's the PSU or a load problem like a 'lytic on the main board.
My supply is awaiting parts and I don't have a schematic, so I can't be more specific.

If it turns out to be a hard-to-get component, this PSU is also used on the following models:
BUSH BTVD31217S2
ELECTROTEC 586/431
RED 586/341
RED 6972049 22IN
RED X32/29C-GB-TCD-UK
SENS S2201DVD

eBay may well have one of the above with a broken screen that you could get for peanuts. Also the Bush and SENS models *seem* to be identical, so could be a source of a main board if that's the problem.

If the worst comes to the worst, sell it (or just the screen) on eBay and recoup a good chunk of what you paid.

HTH

Dave Barron, January 2012