VOX Amplification USA VTX150 - Manual (Page 37)

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4. No sound from the PHONES jack
• Could the top panel MASTER volume be turned down?
• Check whether sound is output from the amp.
To do this you must disconnect the PHONES jack, since sound will not be
output from the internal speaker if headphones or a cable are connected to the
PHONES jack.
If no sound is produced from the amp, check the items listed in “No sound
from the amp,” above.
If there is sound from the amp, check whether your headphones or cable
might be broken or malfunctioning.
5. Effects are not applied
• Could the TUNER (BYPASS) LEDs be lit?
If it is lit, the effect is bypassed. Press the TUNER (BYPASS) switch to defeat
bypass. The TUNER (BYPASS) LEDs will go dark.
• Could the VALUE, DEPTH, or REVERB knob be set to OFF or the minimum
value?
Adjust the knobs.
• Could the effect have been turned off by using a VOX VFS5 foot switch or
VOX VC-12SV foot controller?
Turn on the effect by operating the VFS5 or VC-12SV, or by using the top
panel VALUE, DEPTH, or REVERB knob.
• With the expression target assigned as a parameter that determines the effect
depth, could the expression pedal of a foot controller connected to the VTX150
Neodymium be set to the minimum position?
6. No sound is heard from a device connected to
the AUX IN jack
• Is the device connected correctly?
• Could the volume of the device be set to minimum?
7. A bell-like noise is produced when you touch the
VTX150 Neodymium
• This is noise distinctive of vacuum tubes, called microphonic noise. It is not a
malfunction.