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Toshiba 37AV502r

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mikep317:
Hi
Still having the same problem with my 2009 Toshiba 37AV502r. Turns on, picture is great, starts cycling on and off after 2-10 minutes. checked for dry joints, soldered a few suspect ones, caps look good(no leaks or bulges)Thinking power supply board(pk101v1080i) but it looks like this is hard to find.

Any ideas would be appreciated.

cheeky2:
I have a similar problem with my 37av505d Toshiba set if you see my post see if the boards are the same as mine in the picture i have uploaded?

mikep317:
I was able to find another main board and repalced- Worked fine for 2 hours, then back to same issue- On then off, cycles until no more picture. Ideas? 2009 Toshiba 37AV502 R model

watteau:
Hi,
Possibly the inverter, or LCD control panel causing the problem, try taking out
the plugs to these panels one at a time, and see if the set stays on.
Otherwise, this could be temperature related, try using a hairdryer to see if
this will cause the fault to appear quicker, (warming power-supply pcb. etc.)
then freezer spray to try to narrow down the suspect component(s).
regards

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