Block Letter 5150 Footswitch Relay Issue

This forum is for talking about all kinds of Peavey guitar amplifiers.
Post Reply
mikewolfe
New Member
Posts: 1
Joined: Mon Jan 03, 2022 5:24 pm

Block Letter 5150 Footswitch Relay Issue

Post by mikewolfe » Mon Jan 03, 2022 5:31 pm

Hey all,

I have a block letter 5150 head on my bench right now with a strange issue. customer recently built a footswitch to use with his head and it works, but not entirely. With the "Channel" button pressed in, the footswitch changes the LEDs of the channels but the signal path does not change; ie the pre and post gain controls on the Lead channel are Null.

Obviously my instinct would tell me it's a relay problem but without the footswitch plugged in, the "Channel" switch properly switches the channels and everything works accordingly!! I've looked over the footswitch and everything appears to be wired correctly, and using a proper TRS cable as well.

I'm still a novice tech so please feel free to school me and drop some knowledge to point me in the right direction. Thanks!

Post Reply