My daughter had a sleepover last week and my onyx was left on for about thirty hours. I went to turn it on and noticed that it was on the girls had just turned down the volume. When i turn up the volume there is no sound until i power the amp down. Then i have sound for about five seconds until the tube discharge. I looked at the tubes they all appeared to be glowing. Any help would be appreciated.
Scott
I had this happen to me when I first got my Manley tube amps. During shipment to me one of the tubes got molested by UPS and it blew. All of the tubes were glowing still, but there was no sound coming out of the amplifier.
The simplest solution is to try and change the tubes.
It gets hairy from there. If you change the tubes and there is no sound still, try replacing the fuses in the unit, if a tube went, a fuse could have also gone.
If you replace the tubes and the fuses and there is still no sound, you could have blown a cathode resistor.
This happened to me. One of the cathode resistors blew and it rendered the amplifier inoperable until I replaced it.
Manley sends out clip on resistors, so I could change it myself. However, if the unit needs to be soldered out of the resistor, and the new one soldered in, it gets confusing.
Good luck man!
