Do i have to re-bias when replacing powertubes?

[rocksoldier]

My Jcm800 2210 have started to make some weird noise a while after i turn it on, and i think it´s time to change the power tubes.
Would i be fine just buing the tubes from a local store and replace myself?
The amp was setup like 6 months or so ago, but i do i have to re-do it when changing tubes, i have no idea what´s in there know as i bought it just 4 monthts ago...

[jgcable]

Re: Do i have to re-bias when replacing powertubes?

Call or email Bob from Eurotubes. He can answer your questions. Usually, a bias is in order when you are replacing power tubes.

[JerryP]

Re: Do i have to re-bias when replacing powertubes?

Yes, you need to have the bias checked and adjusted if needed when ever you change power tubes.
Jerry