Compaq Portable II PSU - value of C13?

Jules Richardson jules.richardson99 at
Sat Oct 3 16:34:12 CDT 2020

Hi all,

Does anyone happen to know the value of C13 in a Compaq Portable II power 
supply? It's a small-ish tantalum that lives next to the heatsink between 
U6 and U7 - although mine doesn't live any more, having just roasted itself 
in spectacular fashion.

Quite possibly there's some other fault at play, but on the other hand it 
may have just been its time; tantalums in vintage stuff seem a little prone 
to failure.



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