[amsat-bb] SSB pre-AMPS

Ahem, as they're being discussed,

I've a DBA-270 that seems to have lost the VHF side of the pre-amp (when I switch on the Pre-amp, signals drop on VHF, fine on UHF). I've never had a reason to open one, so I was wondering if its likely that I'll be able to replace the device myself?

Regards John EI7IG