New (broken) pedal day!

[Arpeggiator]

Here's some pics, I don't see anything suspicious on the circuit board. Might have to mess around with the trimpot later...

https://photos.app.goo.gl/Zk2PJ28DzTNXaatA9

[Pepe]

This solder joint looks a bit strange in the picture:

20241127_095508.jpg (230.53 KiB) Viewed 7708 times

[laurie]

Signal passing with no phasing almost certainly means the bias is incorrectly set. Make a mark on the trimpot so you can restore it if need be, then slowly turn it to both extremes. I bet the phasing comes back at some point in the trimpot travel.

[Arpeggiator]

Haha, it gets weirder now...

I hooked up a drum loop in order to have a constant signal and I was able to find the "sweet spot" with the trim pot, but the modulation is static and doesn't change by itself. I can however sort of mimic the phasing effect by turning the "Depth" knob by hand.

[Pepe]

Okay, then the LFO is faulty. What could be the cause, Laurie? I would swap the old tantal capacitor as a first step, but is it in the LFO path? I cannot find the schematics for the PH-1 on the fly. Only for the PH-1R.

[laurie]

Agreed. Seems pretty certain the LFO isn't "O"ing.

This gets tricky - into the territory that needs a scope to really find out what is going on.

You could try replacing C11.

I'm assuming all the connections for all the wires to the pots are solid?

[laurie]

That dodgy solder joint (circled in yellow above) is on C12... if there is a problem with that joint, it could definitely affect the LFO.

[Arpeggiator]

Thanks for your advice, guys. I'll be off hiking for a couple days but I'll check further on the weekend. Determined to get this thing going again!

[laurie]

Crybaby in unknown condition. Clearly dodgy. Not sure if it works, but all the pieces are there. USD$8.60
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Crybaby.jpg (196.83 KiB) Viewed 7554 times

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Crybaby_bottom.jpg (208.65 KiB) Viewed 7554 times

[Pepe]

Interesting! This pedal has had a rough life for very sure. The bottom plate was turned around for the velcro, I suppose? Not the worst method to save the optical state.