Donnie B.
Active member
Picked up a used 2016 and it quickly developed this issue. Amp is on its way back for service.
- Loud buzz that sounds like 60 cycle hum.
- Has never happened when the amp is cold. It needs to be fully warmed up first.
- Has happened in all 3 of these cases:
a) Instantly when switching channels (mini-toggle or FS)
b) Instantly when warm and turning on after standby.
c) Random while playing.
- Once it starts, it’s on all 3 channels (can start on any one of them) and it won’t stop by flicking the standby on/off.
a) Gain knob has no effect.
b) Master knob has full control of the level of the buzz.
c) NO sound at all from the guitar in any channel.
- I am not using the FX loop or the Reverb.
- Issue happens in both 100W – 8ohm and 60W – 4ohm positions.
- Happens with footswitch plugged in or un-plugged.
- Tried all new tubes from the Boogie store.
- Removed the chassis and inspected for dust/dirt/etc. Also rotated the new tubes and then re-tried the original set.
SOUND FAMILIAR? What was it? Thanks.
- Loud buzz that sounds like 60 cycle hum.
- Has never happened when the amp is cold. It needs to be fully warmed up first.
- Has happened in all 3 of these cases:
a) Instantly when switching channels (mini-toggle or FS)
b) Instantly when warm and turning on after standby.
c) Random while playing.
- Once it starts, it’s on all 3 channels (can start on any one of them) and it won’t stop by flicking the standby on/off.
a) Gain knob has no effect.
b) Master knob has full control of the level of the buzz.
c) NO sound at all from the guitar in any channel.
- I am not using the FX loop or the Reverb.
- Issue happens in both 100W – 8ohm and 60W – 4ohm positions.
- Happens with footswitch plugged in or un-plugged.
- Tried all new tubes from the Boogie store.
- Removed the chassis and inspected for dust/dirt/etc. Also rotated the new tubes and then re-tried the original set.
SOUND FAMILIAR? What was it? Thanks.
