Tweakers' Asylum

X/y rated safety caps

72.78.3.50

Luke1

I have a dynaco st70 and purchased a power supply and bias restoration kit. It came with a pair of x/y rated safety caps. I'm not sure where they go. Any help would be appreciated. Thanks.

Follow Ups:

RE: X/y rated safety caps - Luke1 10:51:14 01/01/16 (0)
Thanks guys. Great read on the homework. I'm new to this stuff. I thought that's where they went on the 7 lug terminal strip but wasn't positive.glad I found this site.
RE: X/y rated safety caps - Uncle Mike 08:48:20 01/01/16 (0)
homework
- https://electrosome.com/x-and-y-rated-capacitors/ (Open in New Window)
No schematic or instructions included? - 1973shovel 08:47:07 01/01/16 (0)
That's a difficult, but not necessarily an impossible guess.

The original Dynaco ST-70 had a dual (two caps in one disc) 0.02 �F ceramic cap as part of its bias supply. If there aren't other provisions already made for those caps in the kit you bought, that's where I'd be looking to put them.

See picture below, with the red arrow indicating the cap(s) I'm referring to. If that's where they're intended to go, one cap would go between the lugs marked #5 and #6, the other between #6 and #7

More info (cap values, any instructions included, etc.) would be most helpful.

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