Phase 45 problem and question.

[mars_bringer_of_war]

I built my Phase 45 from the Tonepad pcb layout around 2 years ago. I didn't use it very often until now, and it has developed a pop when the switch is engaged. I tried a quick fix of a 2.2M resistor from input to ground across the lugs of the input jack, but no help there. Any thoughts would be appreciated. The only thing different from the schem is the fact that I used J201s instead of 5952 for the jfets, which leads me to my question: what is the recommended vgsoff range for the 5952s in the Phase 45 and 90? I've got a couple dozen measured, most in the 1.35v and 1.45v range.

[Fuzzy-Train]

The J201's shouldn't be a problem (I don't think) since I have them in my TP Phase 90 and I have no popping whatsoever. I had popping when I didn't have the RIN 1M resistor mounted, but once I got that in there I had no popping issue.

That's really weird.

[markm]

Try putting a 1M on the output to ground as you did on the input.
That'll probably do it.

[mdh]

It shouldn't have anything to do with the popping, but I recall R.G. saying that the desirable range for the Phase 45/90 and relatives is something like 1-3V.  So you might do a little better with the 2N5952s.  If you socketed the FETs, swap 'em and see if you like it.  You'll definitely have to adjust the trimmer again.

[mars_bringer_of_war]

I know the choice of jfets has nothing to do with the popping, I'm just addressing two different issues about my particular build.
Is there any reason the pop would develop over time, as it wasn't present when I intially completed the pedal?