Re: 2245A mains filtering
Hi Brian,toggle quoted messageShow quoted text
As far as I know, Schafner is a bad brand during the
80's, through early 2000's. They work ok in the USA,
but in the 240V world, they like to let their smoke out.
The RIFA sort that are a problem have a yellowish clear
molded epoxy outer coating, over a paper dielectric
capacitor. The epoxy shrinks, cracks, and lets moisture
into the paper capacitor, where it can become explosively
Generally, tektronix scopes are made of good stuff. You
can leave most of it alone, until it fails, without setting
yourself up for great collateral damage.
The exceptions are SMD electrolytic capacitors in some units,
and Schafner filters when used in 240V land..
Brian Cockburn wrote: