F fusoid New member May 6, 2018 #1 Hi Guys, When i hit the footswitch to boost on my be100, it squeals until i turn the gain down to less than 5...any help would be appreciated...
Hi Guys, When i hit the footswitch to boost on my be100, it squeals until i turn the gain down to less than 5...any help would be appreciated...
Adambomb Member May 6, 2018 #2 The footswitch is just a passive switcher, can't imagine it's that. Must be a microphonic tube in V1 through V3. Get a good 12ax7 and swap until no squealing.
The footswitch is just a passive switcher, can't imagine it's that. Must be a microphonic tube in V1 through V3. Get a good 12ax7 and swap until no squealing.
fusedbrain Well-known member May 7, 2018 #3 Hitting the footswich for the HBE channel brings in V1. Probably gone microphonic. Swap out v1 with a known good tube and see what happens.
Hitting the footswich for the HBE channel brings in V1. Probably gone microphonic. Swap out v1 with a known good tube and see what happens.