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11-11-2009, 05:34 PM
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#1
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Senior Member
Monaco Owners Club
Join Date: May 2009
Posts: 460
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Magnum ME 2012 Inverter Noise
My Inverter is making a noise that, almost  , sounds like a leaf stuck in a cooling fan. It is 4 years old and have been running most of that time. I am planning on trying to remove the cover tomorrow to see if it is a bearing or just dome debris. Has anyone had their cover off? What can I expect? Do you think the fan is replaceable or will I need to get a new unit?
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2005 Monaco Knight, 3 Slide, 38' PST, Cummins 330 ISC, 34,000 miles on this one !
VMSpc, PressurePro, BrakeSwitch, DeLorme SA2010
2005 Honda CRV, Blue Ox, SMI Brake, TomTom Go 720
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11-12-2009, 04:05 AM
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#2
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Community Moderator
Country Coach Owners Club Appalachian Campers Gulf Streamers Club
Join Date: Mar 2000
Location: Chattanooga, Tn.
Posts: 12,063
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It could be something in the fan blade, the motor itself or even another component causing the noise. I have found some with bad fan motors, transformers, capacitors, relays, and motherboards making noises. Be very careful that you disconnect 12 vdc and the 120/240 vac power supply while you access or remove the cover. Then power it back up when you are ready to troubleshoot the unit. Good luck and keep us posted.
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Mike, RVIA & RVSA Certified Master RV Technician
Amy, Dr. Assistant - Roxie & Mei Ling, four legs each
2000 Gulf Stream Scenic Cruiser 450 hp & 1330# torque
06 Saturn Vue, 06 Chevy Z71 4x4 & 2014 Corvette Z51 M7
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11-13-2009, 12:38 PM
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#3
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Senior Member
Workhorse Chassis Owner
Join Date: Nov 2003
Location: Mesa, AZ USA
Posts: 1,806
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Quote:
Originally Posted by Flagelpater
My Inverter is making a noise that, almost  , sounds like a leaf stuck in a cooling fan. It is 4 years old and have been running most of that time. I am planning on trying to remove the cover tomorrow to see if it is a bearing or just dome debris. Has anyone had their cover off? What can I expect? Do you think the fan is replaceable or will I need to get a new unit?
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Go to a computer type store and buy a can of compressed air. Give the insides a good 'airing out' to remove the dust/crud that accumulates in these things. In fact, I have just stuck the nozzle up close to the fan guard and blown it that way with good results.
I also blow out the keyboard and fan on my computer and any other such appliances.
JMHO
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Wretched excess is just barely enough.
2002 Itasca Suncruiser - WH Chassis - 35U - 2006 Jeep Liberty
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11-13-2009, 03:44 PM
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#4
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Senior Member
Monaco Owners Club
Join Date: May 2009
Posts: 460
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Thank you. I will try the air first. When I was out there this morning the noise was gone so I did not take the cover off yet. I do not think a bearing noise would go away. Monaco has this thing in a sealed compartment. It is very clean in there but I also worry about the temperature. Although I have never felt it to be hot to the touch.
__________________
2005 Monaco Knight, 3 Slide, 38' PST, Cummins 330 ISC, 34,000 miles on this one !
VMSpc, PressurePro, BrakeSwitch, DeLorme SA2010
2005 Honda CRV, Blue Ox, SMI Brake, TomTom Go 720
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