VT15 High Frequency Hiss & Static, Volume Dropout « VOX

Member

My 1.5 year old VT15 is acting up and sounding terrible.
-Regardless of the setting or amp model, I am getting loud high frequency hiss and static.
-The noises occur during single notes and chords.
-A month ago, after removing the chassis from the cab, I discovered the tube leaning at 45 degrees.
-The tube had popped out of the retainer and was barely hanging on.
-Fixed the problem and the amp sounded great.
-Now, hiss and static again #@#!!
Should I replace the tube now?
Please Help,
Thanks, Al...
The Amp has not been handled roughly, so I don't expect the tube to move again.

Posted 2 years ago

andrewpmast

Member

Have you tried a factory restore?

1. Turn off the power.
2. While holding down the [CH1] and [CH4] switches, turn on the power. When the
BANK and CHANNEL LEDs start blinking, release the two switches you had been
holding down.
HINT: If you decide to cancel initialization at this point, press the [TAP] switch.
3. Press the [BYPASS] switch. The BANK and CHANNEL LEDs will change from blink-
ing to lit, and initialization will begin. In one or two seconds, initialization will be
completed, and you will switch to Preset mode.
NOTE: Never turn off the power while initialization is in progress.

Posted 2 years ago

inmyvox

Member

Sounds like a bad tube (or more than one bad tube).

Did you replace the tubes? Did that work for you?

Posted 2 years ago