On Mon, 16 Jul 2012 10:25:01 -0500, "fakecrap@..."
<fakecrap@...> wrote:
Great info, thanks. I was under the impression that I should replace with
like-sized capacitance and at least similar voltage (higher being OK as
well).
In high ripple current applications, sometimes higher voltage
capacitors than strictly necessary are used because the larger
physical size can dissipate more heat so they last longer.
I assume the capacitance is OK to increase because it's a power supply and
gets regulated afterword, correct?
It is fine within reason. Increasing the capacitance could increase
the startup current or delay the startup in a switching power supply.
In this case it is a standard 60Hz rectifier and capacitor filter so
the surge current will be higher with more capacitance. I would use
the same value or the next higher standard value if I was being
conservative.
Either way, I'll order some of those up and see what happens. I'm thinking
I'll leave others alone, but I'm still internally re-hashing the age-old
debate of whether or not to just replace all the big cans while I'm at it.
If the failure is age related, then I usually replace all of the
similar capacitors.
David Hess