Mesa Boogie Repair Needed - Your Opinions Wanted - Jemsite
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post #1 of 5 (permalink) Old 09-16-2003, 02:29 PM Thread Starter
 
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Mesa Boogie Repair Needed - Your Opinions Wanted

My Mesa Boogie 50/50 has developed a hum which is audible over my playing at lower volumes (I haven't tried louder volumes). The volume of the hum increases as I turn up the volume knob. I will probably try humfrees, but I never needed them before...

So, I will likely send it out for repair. My question is whether I send it from the east coast to Mesa Boogie on the west coast and incur the additional expense, or use a local shop I used once before. Is Mesa Boogie's repair work that much better to justify the added expense?

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post #2 of 5 (permalink) Old 09-16-2003, 02:49 PM
 
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Have you tried replacing the power tubes(6L6s)? Also the 12AX7s in the power amp rarely go bad...but sometimes do
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post #3 of 5 (permalink) Old 09-17-2003, 04:51 AM Thread Starter
 
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Yes, I replaced both 6L6s and 12AX7s this year. They have little time on them.
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post #4 of 5 (permalink) Old 09-19-2003, 10:10 AM
 
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Have you isolated the problem?
Are you certain its the power amp.
If you're amplifying a unit with a hum it makes sense that it gets louder as you turn it up. I would item by item eliminate each possible source of hum. Start with your cables, then fx loop and then preamp. Try other pres if you have access.

Just trying to save you some time and money, if it isn't your power amp.

Bamm
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post #5 of 5 (permalink) Old 09-19-2003, 10:14 AM Thread Starter
 
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I'm fairly certain it's the amp. I haven't checked the speaker cable, it's new. But it does it when the preamp isn't even turned on. Thanks.
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