HP W22 2 seconds to black

[budm]

Broken lamps in the bottom lamp assembly.

[budm]

Re: HP W22 2 seconds to black

MOSFET AP9960 TO-252 sub: Digikey
https://cdn.badcaps-static.com/pdfs/...6580f979a9.pdf

[budm]

Re: HP W22 2 seconds to black

Or FR3504Z

[davg]

Re: HP W22 2 seconds to black

Broken lamps in the bottom lamp assembly.

I have a unit like this one and I have replaced the lamps but I am still having a problem getting them to light up. I noticed in your list of caps that they are completely different then what is on my board. My board has 5 -1000uf @ 25v 1 - 680uf @ 25v and of course the 1 - 47uf @ 25v. Just wondering if this might be part of my problem?

[budm]

Re: HP W22 2 seconds to black

Are the two by the transformers 1000uF? If they are, that seems high since it does not need that much in those two locations.

[davg]

Re: HP W22 2 seconds to black

Are the two by the transformers 1000uF? If they are, that seems high since it does not need that much in those two locations.

Yes they are. The only one that is different is C811 near the P851 connector. That one is the 680uf @ 25v. The reading across the two transformers T852 - .500k T851 - .499K

[davg]

Re: HP W22 2 seconds to black

Are the two by the transformers 1000uF? If they are, that seems high since it does not need that much in those two locations.

What value would you recommend? iyho would this cause the lamps not to light up? I know you revived several of these were they all lamp related?