Power Meter intermittent
MC2205 Power Meters
Have recently switched to low-power listening with McIntosh tuners, and now find the LEFT power meter is cutting out (dropping to zero) below 0.02 watts, or -35 to -40 dB from max rated. I've checked for meter drive signal on pins 11 & 12 of the Lamp PC Board with an o-scope, and both circuits have drive voltage, even when the LEFT meter is out.
MC2205 meter drive pins.
Cycling the Speakers OFF/ON restores the meter movement (and puts a substantial transient on the meter circuit.) Does this mean a faulty meter movement? Any remedies?
-Gregory
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McIntosh MR80, MR77, MCD7007, C33, C26, MC2205, MC2505, MQ104, XR6, Sonos, Thiel CS3.5
Last edited by Gregory; 12-12-2009 at 12:05 PM.
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