Advertisement
SYMPTOM 3
Secondary HT fuse (1Amp time delay) blows repeatedly. This is a strong indication of a damaged output valve. The valve
function chart shows the valve layout and the function each performs.
SOLUTION 3
Replace the secondary fuse and turn on the power WITH STANDBY ENGAGED. View the output valves. If one of the
valves fails to light up, replace that valve. If both of the output valves are lit dimily, look directly at the output valves abd
disengage standby. If one of the valves flashes brightly or glows red hot in comparison to the adjacent valves, replace that
particular valve. A simple way to verify that the valve is damaged is to switch the position of the suspect valve and follow the
above procedure. If the valve exhibits the same symptoms in a different valve socket position, you can be certain that the
valve is damaged.
If the output valve checks out OK, another cause of a blown secondary fuse is a damaged Driver pre amp valve No.6. Replace
the Driver pre amp valve No.6 first and follow the above procedures. If the symptom persists, consult a qualified engineer, do
not fit a higher rated fuse.
SYMPTOM 4
No pre amplifier boost on Drive channel
SOLUTION 4
Replace pre amplifier valves No. 1 & 2.
SYMPTOM 5
No clean channel, drive channel OK.
SOLUTION 5
Replace pre amp valve No. 3 & 4
SYMPTOM 6
Slow loss of power
SOLUTION 6
Check first for damaged output valves (glowing ,flashing or dead) by using the procedures described in symptom 3. Next check
driver pre amp valve No.6.
All of these trouble shooting procedures can be performed quickly, without the aid of any sophisticated test gear. We suggest that
you always maintain spare valves for emergency purposes. Keep your
performance failure Never subject your valve amp to environmental conditions that would not be comfortable to you!
Should other customer service be necessary, contact your authorised
VC50
Maximum Power Consumption 200Watts
Supply Voltage (Factory Pre-set) 115/230 Volts
Supply Frequency
Output Power
Input Impedance Hi
Input impedance Lo
FX loop level (nominal)
FX send/return impedance
Speaker impedance
Extension speaker
Speaker size
Speaker rating
VH100R
Maximum Power Consumption
Supply Frequency
Input Impedance Hi
FX Loop/Line level (all nominal) 0dB
Laney
TECHNICAL SPECIFICATION
50/60Hz
50 Watts
1 Meg Ohm
470k Ohm
0dB
1k/100k Ohm
2x16 Ohm(8)
8 Ohm
2x12"300mm
80 Watts
250 Watts
Supply Voltage (Factory Preset) 115/230 V
50/60 Hz
Output power
1 Meg
Input Impedance Lo
FX Send/Return impedance
Laney
free of dirt, dust and moisture to prevent
Laney
dealer or call
service direct.
VC100
Maximum Power Consumption 250Watts
Supply Voltage (Factory Pre-set) 115/230 Volts
Supply Frequency
Output Power
Input Impedance Hi
Input Impedance Lo
FX loop level (nominal)
FX send/return impedance
Speaker impedance
Extension speaker
Speaker size
Speaker rating
100 Watts
470 k Ohm
1k/100 k Ohm
8
50/60Hz
100 Watts
1 Meg Ohm
470 K Ohm
0dB
1k/100k Ohm
2x16 Ohm (8)
8 Ohm
2x12/300mm
80 Watts
Advertisement
