CHAMP ELECTRONICS -" THE VINTAGE VALVE
AMP HOSPITAL"
NOTTINGHAM, ENGLAND
SERVICING OF A LANEY VC30 TWIN COMBO
AMPLIFIER
On
test & searching for the intermittent crackling fault that
apparently a few other “tech-guys” couldn’t find!
OK,
referring to the left-hand tube base: Have a close look at the white
wire going to the pin directly below the blue wire. Can you spot the
small hole where the solder hasn’t flowed properly?
Oh Dear!….Wires do come out of unsoldered holes with a gentle pull……Job sorted!!
These
are nice sounding amps. I think the use of a pair of Celestion
G12H’s at 30 watts each is a bit of an overkill........not to
mention the extra weight too. A couple of 20 watt drivers would have
been fine in my opinion.
Just
a word of warning here. On any of these later Laney amps that use
EL84’s, do not put NOS Mullards (or any other NOS) tubes in
these. Because Laney have used pin one as an anchorage point for the
screen grid (grid two) resistors, this will immediately damage your NOS
tubes, because on these, pin one is an internal connection, whereas
later production EL84’s do not have this connection!
