Question about tubes

I have a marshall jcm600 60 watt combo...I was checkin out the back seeing if anything was out of sorts...looking at my tubes though i notice all of them glowing a nice orange but one is not glowing at all...is this tube dead and need replacing???...Anyone who can help its appreciated

ok, ujnplug,try pushing it in as it may be ajar. (love that word) if not bring it to a tech to change, or better yet order the exact same tubes and change them, i assume that you mean the power not the preamp tubes. if its power you need to change them all to the exact rating or have the amp rebiased

Well.. I think its the power amp..not sure which is which really...Im assuming because its the bigger of the two...

Ill try that though thanks

Good site for tube.
http://thetubestore.com/