Hi Guys, I’ve been trying to repair an EHX Holy Grail pedal, the fault being when you connect up the pedal and plug in the power there is no reverb and the pedal almost acts as if it was a volume control e.g turning up the reverb turns down the volume?? If you unplug and plug back in the power supply the pedal functions as it should??
If you then turn off the effect and unplug you have to repeat this whole process again??

Any ideas??
Thanks
Ian