4-710D

[Pascal Gaillard]

Hello everyone
On my 4-710D, mic inputs 1 and 2 lost about half the level. The -15db attenuator has almost no effect.
I exchanged lamps 1 and 2 but without change.
Anyone have an idea.
Thanks in advance.

 

[FutureLegends]

By lamps, do you mean valves/tubes?

 

[Pascal Gaillard]

By lamps, do you mean valves/tubes?

Yes, sorry for my bad google translate

 

[FutureLegends]

Does it happen both in Tube and solid state setting?

 

[Pascal Gaillard]

Using solid state does stupid things.
Idem for tube input.
- Chanel 1 said -6db of gain reduction with selector on GR When something is connect OR not (and don't move). Should say 0 when nothing is connect. It work with signal in when selector is on drive or meter out. But some level is missing.
- Chanel 2 said +6db with selector on GR When something is connect OR not (and don't move). Drive or meter out position work properly. Level ok.
Sorry for this strange description.
Chanel 3 & 4 OK
I had some difficulty to describe this mess properly !

 

[Pascal Gaillard]

Noboby ?