a.s.elliott(at)cox.net
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 Posted: Tue Jan 21, 2014 8:29 am Post subject: Strobe switches? |
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Following some FMEA principles might be valuable here, yes? First, you have some evidence that it is *not* a switch problem, since various switch replacements have done nothing to alleviate the issue. Second, many thousands of builders have strobes in their aircraft which have no problems with switches and fast-on wires burning up. Together, these would tell me to look elsewhere for the root cause.
Do you have a non-standard strobe power supply? Can you swap it with a friends to see if that makes any difference? Can you bench test it using ground power?
Are you using unusual strobe bulbs? Are they the correct bulbs specified for the power supply and fixtures? Are you using an unusual flash pattern? Perhaps with a high duty cycle?
Is there any other evidence of higher than expected current flow behind the switch panel? Other switches or wires? Voltage regulator? Is the ground for the strobe circuit solid?
FWIW,
Andy
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Andy Elliott, CL:480-695-9568
N601GE/Z601XL/TD/Corvair
555 hrs since 11/08
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