[sdiy] "re-cap" when it's SMT?

[Pete Hartman]

and patience to let it dry :-D

Good news!  I replaced C175 only, touched the corroded ceramic cap
with my iron to reflow the solder, and the hiss is gone.  I measured
the cap after taking it out, and the nominally 10uF cap was reading
about 4uF....

There's some other work necessary to recondition it (the Alpha wheel
is stuttery, there's a broken key), but the biggest negative is gone
and I'm pretty darn happy about it :-)

I didn't clean it all up, I wanted to verify whether the single cap
would solve the problem.  Now that I know it does, I can do some
judicious cleaning while I'm doing the rest of the fix up.

Thanks!

Pete




On Wed, Nov 6, 2013 at 11:22 PM, cheater00 . <cheater00 at gmail.com> wrote:
> On Thu, Nov 7, 2013 at 5:13 AM, Pete Hartman <pete.hartman at gmail.com> wrote:
>> Bringing the original topic of the XP-50 repair back up because I have
>> some appropriately sized SMT electrolytic caps now....
>>
>>
>> Now that I have the PCB removed (I was able to figure out all the
>> connectors without damaging any, thankfully), I can see that there are
>> a couple of vias that show signs of corrosion as well as what was
>> apparent on the ceramic caps (which I neglected to get replacements
>> for, but there you go).
>>
>> Is there a preferred method of cleaning this kind of corrosion out of
>> those vias?  Or off the ceramic caps, for that matter?  I can replace
>> them as well if need be but if there's a sufficient solution without
>> waiting another few weeks to get another order together, it'd be a
>> good thing.
>
> A shower head and a toothbrush.
>
> D.