Electronics > Repair

hp 54503a scope psu

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m3vuv:
Hi all,i have this hp 5450a scope with a dead psu,so far i have found one dead fet(i think its a fet) marked 350 qyq003,google finds nothing on it,,i wondered if i can use a pc atx psu in this?

m3vuv:
can anyone id this part?,see pic.

m3vuv:
maybe this will help but looks crap to me as far as service manuals go,totaly piss poor imho

gamalot:
Why can't it be LM350?

https://pdf1.alldatasheet.com/datasheet-pdf/view/11671/MOTOROLA/LM350.html

m3vuv:
that is a possibility as my component tester says unknown or damaged component,i find it does that with any voltage regulator !

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