One Tube Rogue M-120 Mags No Blue Glow, but On

Tubes Asylum

Questions about tubes and gear that glows. FAQ

So one of the eight Tung Sol 6550's on my Rogue M-120's (Magnums) went white and dark within the last couple of weeks. Replaced all eight tubes - interesting thing is the same tube does not exhibit the blue glow of the other seven (they were all uniform about a month or so ago).

I swapped tubes between monoblocks, and swapped the nearest preamp tubes, but the same socket shows the problem. Issue with the amp? Plays music just fine.

I attached a picture of the offending monoblock. The other monoblock has all tubes looking the same.

Any insight would be appreciated!

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Topic - One Tube Rogue M-120 Mags No Blue Glow, but On - Christian 23:01:23 03/11/16 (4)

RE: One Tube Rogue M-120 Mags No Blue Glow, but On - tubular.well 00:24:04 03/12/16 (3)

RE: One Tube Rogue M-120 Mags No Blue Glow, but On - Christian 07:42:03 03/12/16 (2)

RE: One Tube Rogue M-120 Mags No Blue Glow, but On - Triode_Kingdom 08:12:42 03/12/16 (1)

RE: One Tube Rogue M-120 Mags No Blue Glow, but On - Christian 11:20:46 03/12/16 (0)

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