2. amps-preamps
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HELP New tube integrate bias problem.

Hello all,

Just received my first new tube integrated.
I connected my speakers and CD, turned it on and let it warm up for an hour.
I checked the bias on the right side and set all to the specified 1.5 volts. I checked the left side and find that I cannot adjust the voltage above 0.5 volts.
Is this bad tubes? Should I continue to operate the amp like this?
Please let me know I am a neophyte with tubes.
Thank you.
rhanechak
3 responses Add your response
mlsstl
1,436 posts
 
Switch output tubes between the left and right channels. If your inability to bias is due to a bad tube, the problem will switch to the other channel.

If the problem remains with the original channel you likely have another problem that requires a service call.
jmcgrogan2's avatar
jmcgrogan2
6,346 posts
 
It's a new unit right? Send it back and get another.
rhanechak OP
48 posts
 
Thanks, these responses are pretty much what I figured.
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