Deliverance Series 2 Plus 120H not making sound

Amps & Cabs
1

Have a D120ii+ head and cab, lovely setup it sounds amazing. The other day I went to plug in and there was no volume. Amp fires up fine all the tubes glow, I tried different cables to the guitar as well as speaker cables and different cabs. The fuses are not blown. I replaced every preamp tube w the exception of the V5-ECC81 and there was no change. Amp will turn on but no noise, not even a hum.

I am not sure what kind of issue this may be, was just looking for any suggestions! Thanks so much.

2

Can I ask how you checked that the HT fuse isn’t blown? Did you replace it with a new one?

3

I checked the two fuses on the back of the amp is there another internal fuse?

Wouldn’t the amp not turn off if a fuse is blown?

4

I think the all fuses, mains and the high-voltage DC fuse are externally accessible in the D120II+ (I don’t have a D120II+ so there could well be internal protection, but is is not mentioned in the user manual).

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@Stevekovach it’s probably a good idea to double-check the DC fuse for continuity and replace if needed.

Failing that, run through the no sound checklist:

  1. Check input cable.
  2. Check volume controls.
  3. Make sure the selected channel volume and/or gain controls are turned up.
  4. Check to see if the effects loop is engaged (unplug everything; any sound?)
  5. Check the speaker cable to see if it is disconnected or shorted.
  6. Make sure that the impedance selector is set properly (not in the middle of travel)
  7. Check the standby switch.
  8. Check for a blown speaker.
  9. Look at the tubes to see if they are lighting up.

If the DC has blown, you replace it, and it blows again, then it’s worth suspecting the power tubes.

5

The only indication the HT fuse (or DC fuse) is blown would be that there would be no sound. The amp pilot light and tube filaments would still light up as they’re supplied before the HT fuse. I was mainly asking if you checked the HT fuse for continuity by either using a multimeter or replacing it with a new good fuse. Visual inspection of a fuse can be extremely error prone.