Originally posted by chrislayeruk:
Hi, I would look inside for somthing Loose.
It sounds like a resonant noise.
For Safety,Unplug it first.
If in doubt Call Meridian, it wont be the first one.
Cheers, Chris
Actually that is kinda scary advice Chris L. Unless the amplifier is left alone for a significant amount of time after shut-off,
the power supply caps will still have huge (potentialy lethal) voltages stored on 'em. So the correct advice then...
A technician quickly deals with charged power supply capacitors by shorting each cap's terminals with a "bleed or drain resistor". If you don't know exactly what I'm talking about,
don't even think about it!. Assuming a neophyte even wanted to pop the top and have a look-see, he should just let the amp sit unpowered for an hour or two before popping the top. As this will allow the caps to drain naturally.
FYI: Chris G, although its a mechanical noise it frequently still indicates an electrical problem. There are many intermittent faults, not the least of which is a buggy transformer, that could be creating the problem.
Happy Trails!
Vince@freewheelcycle.com
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