Viewsonic VA1930WM No Power

[elbtax]

Checked main filter cap. 1.5vdc. Fuse checked good. Replaced bridge rectifier.
Now i measure 169.2 cdc across filter. Suspected power fet was shot as my voltages at the 8 pins to the main board read: 1=.7v, 2-6=0,7-8=5.2v
Removed power fet and checked bad. Found on Digi-kEY But package type is wrong. Can anyone tell me the package type. Thanks..

[elbtax]

Re: Viewsonic VA1930WM No Power

Forgot to add i have replaced all caps with nichicon low esr, Did not replace big cap or ones in audio section. Power fet is in secong pic by top xformer.

[seanc]

Re: Viewsonic VA1930WM No Power

That picture is too small. Please post a better picture, using macro mode on your camera and any identifiable numbers.

[elbtax]

Re: Viewsonic VA1930WM No Power

I think i put camera in macro mode this time. The power fet is a FrontierFQPF13N50C.
Thanks..

[elbtax]

Re: Viewsonic VA1930WM No Power

Pics did not upload. Lets try again..

[seanc]

Re: Viewsonic VA1930WM No Power

http://uk.rs-online.com/web/search/s...13N50C&x=0&y=0

http://search.digikey.com/scripts/Dk...13N50C&x=0&y=0

Unless I'm missing something, those look correct.

Those pictures are better, still not as close as I'd like, but I'm not sure it really matters now anyway. Is your lense dirty?

[elbtax]

Re: Viewsonic VA1930WM No Power

Thanks for the links. It's an overcast day here. Lens was dirty. Grandson must have gotten prints on it. Thanks..