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Modular Amps
Egnater / Randall Modular Amps
RM100 Tube failure light and randomly blowing tube fuses
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<blockquote data-quote="mThomasDutch" data-source="post: 148148" data-attributes="member: 2616"><p>Just to not leave this hanging - I replaced all the failed components and carefully checked all the components again before firing back up with a pair of known good 6l6's. I brought it up slowly on a variac while keeping a close eye on things, then fed it some audio from a looper while continuing to monitor. So far so good. I have the tubes biased at about 23ma right now, but I'll gradually increase as the amp earns my trust. </p><p></p><p>Thanks to all who offered help her, and thanks Rob for talking with me and looking into the replacement board in case it was needed.</p><p></p><p>At this point, as unlikely as it seems, the evidence is pointing to one or more bad tubes in two batches. I for one am done with EL-34's as I have had failures in every amp I own.</p></blockquote><p></p>
[QUOTE="mThomasDutch, post: 148148, member: 2616"] Just to not leave this hanging - I replaced all the failed components and carefully checked all the components again before firing back up with a pair of known good 6l6's. I brought it up slowly on a variac while keeping a close eye on things, then fed it some audio from a looper while continuing to monitor. So far so good. I have the tubes biased at about 23ma right now, but I'll gradually increase as the amp earns my trust. Thanks to all who offered help her, and thanks Rob for talking with me and looking into the replacement board in case it was needed. At this point, as unlikely as it seems, the evidence is pointing to one or more bad tubes in two batches. I for one am done with EL-34's as I have had failures in every amp I own. [/QUOTE]
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Modular Amps
Egnater / Randall Modular Amps
RM100 Tube failure light and randomly blowing tube fuses
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