Help/Major Problem


I have a Aleph-3 amp and a Rogue 99 pre with phono.
I played the system all last eve. with no problems.
Tonight I fired it up and nothing!
All seems fine except no sound.Only a muted signal(music) when I turn the pre way up.I can see the line stage tubes through the cover of the 99 and they are lit up.This problem is with phono,CD and tuner.I have checked all I.C.'s and P.C.'s All check out fine.
What the hell could be the problem?
128x128david99
If you're inside the Rogue look for an internal fuse. Glowing tubes mean the filaments are getting the voltage they need but there should be additional power supply voltages present as well to do the amplification.

Any chance one or more of your sources has a volume control that you would dare connect a source direct to the Pass? At least you could start to narrow the problem to one component.

Try to remain rational. More than likely you are just a tube or tube plus internal fuse away from pleasureable music again.
You may have somehow triggered the thermals on the Aleph 3. Since it's class A, you no doubt have noted that it always runs hot. This may have inhibited a thermal reset. Try turning it off, letting it cool, then trying again. Good luck!
Make sure that both rear power connectors are properly seated. And if you own headphones, you could try them in the headphone jack -- if the phones work properly then most likely the problem is not in the preamp.
If you have a voltmeter with a fine enough scale to read the output voltages on both the preamp and amp, and a cd with a sine wave test tone, you can play the cd, then step the gain switch on the pre, and measure the right channel output, then the left channel output voltage from the preamp, then the same outputs from the amp. Each set should step in a reasonably linear fashion. That should allow you to distinguish the amp from the pre. It also helps if you know what the full scale output voltages in each case should be.
David, check you cables carefully, make sure the barrel is tight around the female (the ground). I got nothing but a hum from my right channel on 2 different occasions. Both times I enjoyed extended play the night before. First time I rearranged the tubes in my pre and wallaa, it worked. Then a month later it happened again and I jiggled all of my ic's and narrowed it down to my right channel ic to the amp, the locking barrel was not securely fastened so the right channel was not grounded, had nothing to do with the tubes in the pre. It's probably something simple. Good luck and during the panic stage try to remember this too will pass! And breathe into a sack constantly.