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Burning up Van's Engine Instruments because?

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JakeTheBosun

Joined: 09 Jun 2009
Posts: 10
Location: Whitehorse, Yukon

Posted: Tue Jun 09, 2009 7:23 pm Post subject: Burning up Van's Engine Instruments because?

Saturday was hot and busy flying kids for COPA fun event.  After 3 hours I started to taxi back and smelled smoke.  On examination my Van's voltmeter melted inside the electronics, on the circuit board, between the power and the ground stud, had burned up melting the case.



Today checked the voltage and found 12 volts (not running) and 14.2 volts (running) at the main bus that feeds instruments.  Then found that the Oil Temp gauge was hot at same place and melting, and Manifold Pressure is very warm to touch.



I searched and found no obvious loose grounds.



Any suggestions about what would cause this? Where to look next?



Sure appreciate any advice, expertice is distant here in Yukon.

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