Benq W1070 projector smps

[tibimakai]

Re: Benq W1070 projector smps

I have managed to find some spots, that I can measure on the top side of the board and none of the voltages are present, at U42. Only the 14.7V is present.
Maybe, because the C297 it was shorted to ground, it may have damaged the IC as well? It was getting hot, when the C297 it was still on the board. I have also removed U42, and re-soldered it. I have placed an order, for new parts, but they are coming from far east.

[tibimakai]

Re: Benq W1070 projector smps

This PMD1000, is some kind of power supply? It powers pretty much everything, in the projector?
I can't find anything about it, online.
I have placed an order for two of these, but it will take a while, until I will have them.

[tibimakai]

Re: Benq W1070 projector smps

I have received the IC from China. After replacing it, the projector booted right up.
The image it was very dull. I thought, that I need to replace the bulb, but all it needed, a good cleanup.
All it was, this DC/DC converter(PMD1000) and a shorted smd capacitor, which it was a decoupling capacitor, at this PMD1000 IC.
Thank you very much for your help, it is greatly appreciated.

[R_J]

Re: Benq W1070 projector smps

Thanks for the follow up, good to here you have it working