Re: 2235 2mV vertical range noise and surprising fixes


regarding the 2235 secondary psu rectifiers:

YES, it is possible to see leaky, shorted or open secondary supply rectifiers,
which results in big ripple.  this is FAR less common than bad caps (over 90% of the problems) but it does happen after many years. if I cannot get the bus voltage ripple low enough (just compare to other supplies), that's the next item to replace. I've only had to do it a few times, but that's more than never.

one more thing, I always use a floating device to measure DC volts and ripple, the Fluke 867B graphical multimeter works great for me, I can see everything at once, and no ground interactions.


Walter Shawlee 2
Sphere Research Corp. 3394 Sunnyside Rd.
West Kelowna, BC, V1Z 2V4 CANADA
Phone: +1 (250-769-1834 -:-
+We're all in one boat, no matter how it looks to you. (WS2)
+All you need is love. (John Lennon)
+But, that doesn't mean other things don't come in handy. (WS2)
+Nature is trying very hard to make us succeed, but nature does not depend on us.
We are not the only experiment. (R. Buckminster Fuller)

Join to automatically receive all group messages.