[Boatanchors] Troubleshooting linear amplifier

[WA5CAB at cs.com]

Almost certainly easier said than done, but of you suspect the band switch, 
set the switch to some band and solder the shortest possible jumpers across 
the pertinent contacts.  And don't rotate the switch to another position.  
If it doesn't start working, it isn't the switch.  Last time that I had to 
do that with a BC-611, it turned out not to be the switch but did lead to 
finding the fault.

Robert Downs - Houston
wa5cab dot com (Web Store)
MVPA 9480

In a message dated 04/10/2016 09:38:26 AM Central Daylight Time, 
af4k at hotmail.com writes: 
> I wonder if anybody can give me any tips on troubleshooting a nonresident 
> part network in a TENTEC Centurion 422 amplifier.
> 
> It does not seem to resonate of the right frequency. I have tried many 
> things and is coming down to possibly being a bad band switch but how do you 
> troubleshoot that in place?
> The coupling caps are OK. The plate and load tuning caps are tuning OK. It 
> just doesn't resonate on any band.
> 
> Best regards - Brian Carling
> AF4K Crystal Co.
> 117 Sterling Pine St.
> Sanford, FL 32773
> 
> Tel: 321-262-5471