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  #21  
Old 01-14-2012, 10:05 AM
Greg Arehart's Avatar
Greg Arehart Greg Arehart is offline
 
Join Date: Jul 2007
Location: Delta, CO/Atlin, BC
Posts: 2,391
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A side note. Yesterday I took out the battery in my voltmeter and replaced it. I had not thought about that before since all my old voltmeters were analog. Turned out that the 9V internal battery was only putting out about 6.5V! The replacement battery made the voltmeter work properly - no more creeping upward with time, it is now rock steady when measuring battery voltage. So I learned something about electronics yesterday as well!

cheers,
greg
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Greg Arehart
RV-9B (Big tires) Tipup @AJZ or CYSQ
N 7965A
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  #22  
Old 02-01-2012, 10:03 AM
edbooth edbooth is offline
 
Join Date: Feb 2006
Location: Trenton, SC
Posts: 117
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I had an alternator go out on my 7 last weekdend. The first indication was strobe noise in the headset. This I never heard before in 800 hours. Did not register at first what might be wrong. Next morniong tried to start and battery just about dead. It finally started and when I checked battery voltage on RMI monitor, It indicated 11.4 volts....oopsss. Checked field voltage to alternator..11.4 volts. Replacement alternator solved problem. I think a stand alone volt meter or low voltage light is probably more valuable than a ampmeter..IMHO Apparently the Whelen strobe power supply does weird things at low voltage.

Ed Booth, RV 6,7,10,9A
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