On Sat, 14 Apr 2018 12:06:06 -0700 (PDT), wrote:

On Saturday, 14 April 2018 16:07:40 UTC+1, Dave Plowman (News) wrote:
Need some replacement reservoir caps for a power amp. Nothing special -
just 10,000uF at 63v. RS have them from about 4 quid to about 50.

Old amp so not PCB mounted - just wires to them and plenty space so not
restricted to an identical part - which isn't made now anyway.

Best make to go for? Is a 50 quid one really worth it?

SMPSUS run reservoir caps hard, ESR, temp rating & life expectancy matter. But for a 50Hz psu as yours surely is, it doesn't matter at all.


NT
Precisely!

I would hazard a guess that a CRO would provide an interesting set of
traces, because all those little interstage coupling caps and the
decouplers across the emitter resistors will be drying out too.

Not to mention the speaker coupling electrolytics.

Mind you, he probably uses a Shure V15 for his 78's ;-)


AB