Gordon Rankin
New Member
- Joined
- Aug 10, 2021
- Messages
- 10
- Reaction score
- 8
All,
So I have been fighting what I thought was a tube or amp problem for a couple of days. I have the 50th anniversary issue DSL1 with dual channels. I pulled the tubes and replaced one at a time no go no output. So I pulled the amp out put it on my bench and it worked fine??? So then I put it back in the rig I was using to test it and sure enough works fine. Plug in the Marshall channel switcher and fire up the amp and everything works fine. Hit the footswitch and nothing, hit a again and nothing. OK turn it off pull the foot switch out of the amp and check the continuity and it's fine so it must be something with the interface of the front panel switch (which works as long as the foot switch is out of circuit) and the external foot switch input.
There are no schematics for this version which has dual ECC82/12AU7A outputs. Only can find the single channel version.
Contacted support and everyone knows how that goes...
Any thoughts?
Thanks,
Gordon
So I have been fighting what I thought was a tube or amp problem for a couple of days. I have the 50th anniversary issue DSL1 with dual channels. I pulled the tubes and replaced one at a time no go no output. So I pulled the amp out put it on my bench and it worked fine??? So then I put it back in the rig I was using to test it and sure enough works fine. Plug in the Marshall channel switcher and fire up the amp and everything works fine. Hit the footswitch and nothing, hit a again and nothing. OK turn it off pull the foot switch out of the amp and check the continuity and it's fine so it must be something with the interface of the front panel switch (which works as long as the foot switch is out of circuit) and the external foot switch input.
There are no schematics for this version which has dual ECC82/12AU7A outputs. Only can find the single channel version.
Contacted support and everyone knows how that goes...
Any thoughts?
Thanks,
Gordon