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  1. S

    Mark IV newbie tube replacement question.

    Russ, mine(MarkIV fan)is mounted to the bottom.
  2. S

    Mark IV newbie tube replacement question.

    Wow,I just went downstairs and pulled that grille right off!F***ing velcro!I would have never thought of doing that.Why dont they mention that in the owners manual?Anyway,the pre-amp tubes are right there,very easily accessed now.Thanks CJ! And thanks Brewski for the "Can" info.
  3. S

    Mark IV newbie tube replacement question.

    Hi, I have a Mark IV short head.I ordered pre-amp and power tubes to replace the existing ones.I've never changed pre-amp tubes before and was wondering how to do this.Do I just remove the power tubes then try pull out the pre-amps?It looks pretty tight back there.Will my hands fit?Or do you...
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