On 07/02/2014 18:08, N_Cook wrote:
On 07/02/2014 16:53, 2phar wrote:
Hi all..

I have a BENQ G2420HD 24" LCD monitor.

Display backlight seems good, etc. But unit shuts down completely after
about 20-30 mins (no backlight, power LED goes out). Holding down power
switch at this point will cause unit to come back up after about 30-40
seconds. Then it will die again within 5-10 mins, but can be restarted
the same way.

I've already replaced all the elect caps on the power supply board.

Is the power board still the most likely problem here? Any suggestions
as to how to pinpoint the cause would be most welcome.

IR thermometer, targetted narrow jet freezer spray or hot air through na
silicone tube

If you use a standard hot air gun then low temperature of course. And
you have to divert off some of the air, via a silicone rubber tube ,off
a silicone rubber cover or something with plenty of other holes in it or
you will block the air flow and damage the air gun probably and also too
much heat while it still works