25 Oct
2017
25 Oct
'17
2:15 p.m.
Thanks for the suggestions. I will have to desolder the heatsinks from the board though,
and then I can try a good clean up as suggested. I know about those RIFAs, the H7878 had
one but it seemed still OK and this one looks to be in good condition, do they show signs
of cracking before they go?
Regards
Rob
-----Original Message-----
From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of shadoooo
via cctalk
Sent: 25 October 2017 21:06
To: cctalk <cctalk at classiccmp.org>
Subject: RE: Cleaning and Restoring a Badly Corroded PSU
Hello,
the vertical heat sinks for the TO220 with this design are fairly common, I saw
them many times on various boards.
However, as they are simply aluminum parts, you can clean them for sure.
After removing the screw, you could try simply with an hard brush.
If badly corroded, remove the bubbles of oxide with a thin sanding paper, then
you could restore the opaque aspect submerging for few seconds in caustic
sodium solution. Be aware to protect eyes and skin!
Replace the RIFA X2 capacitor!!!!
Andrea