Hi all,
I have a viewsonic OPTIQUEST Q95 monitor, model # VCDTS27284-4m.
It got zapped (along with a bunch of other stuff) in a power power
surge on our incoming power lines. The fuse was blown, so I replaced it
with the correct new fuse and when I plugged it in, Q802 indicated that
it was bad by making a nice buzzing/frying egg noise and shooting
sparks and smoke for a second or two till the fuse blew again.

Does anyone here have service info for this monitor? Could someone
please let me know what Q802 is? It is a TO220 package, mounted to a
heatsink. The only markings I can discern a "FS10" the markings
after FS10 are burned off. Below that is "14A"

I checked the NTE cross ref, and it comes up with 11 parts, I can
eliminate 6 of them for wrong package, etc., leaving 5 of them being
more likely correct, all being N-channel MOSFETS of one sort or
another. I could guess and try, but if someone here knows, thier
guidance would be most appreciated.

Any thoughts on what this part is?

Thanks very much for any help you can provide!
-AL

I believe your part is a n-chan FET made by Mitsubishi. The number is
FS10SM-16A
It is a 10 Amp 800V FET in a TO-3P package. I don't think you would
need a 10 Amp FET there, an 8 AMP would work OK.
John

Thanks very much!
That did it!

Best regards,
AL