Any Vox Techs out there? Help

[01redcobra]

Looking for help with a hum at V3 on a Vox AC15H1TV. Previous thread was http://music-electronics-forum.com/t16359/
I have found the hum to be coming from V3 on the B side of the tube according to the schematic. Schematic link is listed on that previous thread. Thanks

[Chuck H]

This does seem to be a common problem with these amps if the number of threads I've read and the nature of the correspondance is any indication. I would try moving the V3 filter ground to another location for starters.

Chuck

[01redcobra]

Thanks Chuck. Tried that ground relocate and still having the hum. Someone suggested adding another filter on the HT before R1. Guess I'll give that a try now.