Huge sudden volume drop with PS2A

[dan]

Hey @FarleyUK welcome to the forum,

If you toggle between operate/bypass with the amp, do you get back to full volume? If yes, then this shows the PS-2A is not putting out sound.

Sounds like you have done some of these steps, but please go through them we find it helps people a lot catch things,

Power Station: Troubleshooting Guide

WON’T TURN ON Make sure AC cord is securely connected at both ends. Verify the power source with something you know works. Check the mains fuse, and replace if necessary. If it blows again, refer to qualified service personnel. NO SOUND Check input cable. Check volume controls. Make sure the amplifier volume and/or gain controls are turned up. Unplug the FX loop, check for sound. Connect a jumper cable from FX send directly to FX return; check for sound. Connect a jumper cable from Line Out d…