I would greatly appreciate any recommendations for a good tube amp repair service in the South Jersey/Philadelphia area. 
Tonight my Cayin TA30 stopped working.   

  I think one of the 12AU7 tubes went bad - while music was playing the right speaker suddenly started distorting like crazy.  I turned the amp off but first noticed that the 12AU7 had a bright blue spark flickering near the base.  I changed the 12AU7, switched the 12AX7s, and replaced the EL34s, but I get no sound whatsoever out of the right speaker.  I love my tube amp and am hoping it is just a fuse... 
 
  Anyway, any recommendations for a reputable tube amp repair service would be great.  I tried to look up Jim Nichols, but his site appears to be down. I think he's based in Pennsauken, which would be really convenient for me.
Thanks! in advance!