Help!

[Jim Noble]

Hi Guys,

Does anyone know what would cause a Fender Bassman 200 to 'scream' when switched on?.

Thanks.

[SH73]

If I had one and switched it on my wife would. Joking aside , I wouldn't attempt to switch on again and probably get someone who knows a thing or two about amps. 

[Dad3353]

14 minutes ago, Jim Noble said:

...Does anyone know what would cause a Fender Bassman 200 to 'scream' when switched on?....

All sorts of reasons, but none that a User can do much about. Take it to the best, most reliable, repair tech in your area and hope that it's an easy fix. Prepare for the worst, but it could be something quite simple, just the same. Good luck with it; they're fine amps.