[bk]

I recently decideded to upgrade my Dynaco st-70 to a VST driver board.
The install semmed to go smooth, all the bias checks were perfect
however when i finally turned everything on i got some sound and than
id faded into nothing. if i turn the volume all the up i can faintly
hear it and it sounds extremely static. I decied to replace the cap
and still had the same problem, i also replaced the rectifier tube and
all the tube sockets. still the exact same problem. the amp was
working fine before th e"upgrade" anyone have any hints as to where to
check next?