Sanyo dp42647

[promethazine]

Picked up a Sanyo 47 inch for free yesterday plugged it in and the sound comes on and the remote works as far as turning the volume down and changing the inputs but the backlight just strobes on and off. Was thinking maybe the t-con board? any suggestions?

[tom66]

Re: Sanyo dp42647

Continuous strobing or only once on power up?

[promethazine]

Re: Sanyo dp42647

continuous once powered up, i left it on for 15 mins to see if there was a change but no change

[tom66]

Re: Sanyo dp42647

OK, do you have a digital multimeter available?

[promethazine]

Re: Sanyo dp42647

Yes i do.

[tom66]

Re: Sanyo dp42647

Start by removing the back cover and getting pictures of the power board.

[promethazine]

Re: Sanyo dp42647

Will do, im stuck at my lovely job for the next 3.5 hours but i will get them posted as soon as i get home. already have the back off the television and did a quick inspection of the capacitors, looks like one has been replaced. it has a green mark on the top and is a different color from the rest.

[promethazine]

Re: Sanyo dp42647

[tom66]

Re: Sanyo dp42647

OK, on the left hand side of the power board you have some connectors for the 24V, etc. What voltage do you get on the pins marked 24V? Multimeter on volts DC (200V/400V if manually ranging), red probe for pins marked 24V, black probe on chassis, and TV powered on with backlight flickering. Observe any noticeable changes in the voltage as it flickers.

[promethazine]

Re: Sanyo dp42647

Thank you I will get this done this afternoon after i get out of work or tomorrow and report back.