Troubleshooting - Vox Valvetronix VT30 User Manual

Troubleshooting

1. Power does not turn on when you turn the [POWER] switch on
➢ Is the power cable connected to the rear panel AC power inlet?
➢ Is the power cable connected to an AC outlet?
➢ Could the AC outlet be malfunctioning?
➢ Could the power cable be damaged?
2. No sound from the amp
➢ Could your guitar's volume be turned down?
➢ Is your guitar cable connected correctly?
➢ Could your guitar cable be broken?
➢ Could the top panel [MASTER] volume be turned down?
➢ Could headphones be connected to the top panel PHONES jack? If so, disconnect
them.
➢ (If you're using the VT50/VT100) Could a cable be connected to the rear panel [EX-
TERNAL SPEAKER OUT] jack?
Disconnect this jack if you're not using an external speaker.
If you don't hear sound from a connected external speaker, make sure that your
speaker cable and external speaker are not broken or malfunctioning.
➢ Check the settings of the [GAIN], [VOLUME], [TREBLE], [MIDDLE], and [BASS]
controls. For some amp models, there may be no sound from the amp if the [TREBLE],
[MIDDLE], and [BASS] controls are turned down, just as for the circuitry of the
original amp.
➢ (VT100 users) Could a cable be connected to only the LOOP [RETURN] jack of the
rear panel?
Connect the cable from the LOOP [SEND] jack to your external effect unit, and
connect the output of that effect unit to the LOOP [RETURN] jack.
Adjust the output level of your external effect unit to an appropriate volume.
➢ If the VT-series is in Manual mode (MANUAL LED lit), could the [GAIN], [VOL-
UME], [TREBLE], [MIDDLE], and [BASS] controls be set to 0 or the minimum value?
3. Insufficient volume from the amp
➢ Could your guitar's volume be turned down?
➢ Could the [MASTER] volume be turned down?
➢ Could the rear panel [POWER LEVEL] be turned down?
➢ Check the settings of the [GAIN], [VOLUME], [TREBLE], [MIDDLE], and [BASS]
controls. For some amp models, there may be no sound from the amp if the [TREBLE],
[MIDDLE], and [BASS] controls are turned down, just as for the circuitry of the
original amp.
➢ If the VT-seriesd is in Manual mode (MANUAL LED lit), could the [GAIN], [VOL-
UME], [TREBLE], [MIDDLE], and [BASS] controls be set to 0 or the minimum value?
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