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HT fuse
The HT or ‘High Tension’ fuse protects the high voltage for the valve supply. If this fuse
blows, the first step is to replace it with an identical T1A 20x5mm fuse. The HT or the
mains
fuse may sometimes blow due to ‘flash
-
over’ inside an output valve. This is where
during the manufacturing process, not all of the gas is removed from the glass envelope
and the ‘getter’ inside the valve, usually made from barium or magnesium oxide,
will
burn or evaporate these remaining gasses resulting in the common silvered internal
surface of the valve. This process, which is more likely to happen with new equipment,
draws high current momentarily and can blow the HT or mains fuse. It will rarely cause
any damage so just replacing the fuse is sufficient to get the amp running normally again.
However, if the HT or mains fuse blows again, it may indicate a serious valve failure
where internal parts of a valve are shorted and in this case the amplifier needs to be
checked by a qualified engineer to assess the problem.
Output power switch
You can run your V140 at either high or low power. This switches between full high-
tension voltage and around 60 per cent of the high-tension voltage, thus lowering the
output power to around 30 watts and enabling the output stage to be pushed into
overdrive much more easily.
Mains Inlet, (IEC Socket) & Mains Fuse
Please only use the correct mains cord for your territory! Ensure the V140 is switched to
the OFF position using the front toggle switch before plugging the mains lead in this
socket.
The mains fuse is located in a small tray under the inlet which can be removed using a
small flat blade screwdriver. Please note where this fuse is located in the tray before
replacing it with the correct type and value for your territory.
Voltage selector
Selects the correct mains voltage for your territory. Please refer to a qualified technician
before even thinking about moving this switch. If you do find yourself in foreign climes
where the mains voltage is different to home, (and the water tastes funny), it will be
necessary to switch this selector. The mains fuse must always be changed at the same
time. Failure to do this will result in either the mains fuse blowing as soon as the amp is
turned on or the amp running with a fuse that is of too higher value to provide adequate
safety protection. Generally, the fuse value will double if the mains voltage is halved, (i.e.
if it’s a
T3.15A fuse in the UK @ 230V, it will need to be a T6.3A fuse for the USA @ 115V).
Always use the correct rating and type of fuse. Victory amplifiers exclusively use UL-
approved 20x5mm glass
‘T’ or ‘Timed’ fuses
. If you have difficulty acquiring the correct
fuses, please contact Victory using
