| Radio cuts out.. a real headscratcher [message #132145] |
Sun, 26 June 2011 20:17  |
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RF_Burns
Messages: 2277
Registered: June 2008
Location: S. Ontario, Canada
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Senior Member |
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I put a new Kenwood radio in last summer as my old radio did not have an Aux-in (for my XM radio) or USB.
The audio would cut out on it, but I didn't think too much of it cause I was using XM and it would cut out on its own speakers.
This summer I plugged in my Ipod and it cut out too! So more investigating I discovered it cuts out on all audio sources, but only when the engine is running. I checked the power with my 'scope for noise and stability and yes there is a bit of alternator noise so I installed a choke and a filthy big capacitor and still cuts out.
So I ran a power and ground out to the battery terminal in front of the passenger... still cuts out. Moved power to the house battery... still cuts out.
Today I remembered to bring a small gel cell home and hooked it to that... and it still cuts out!
When I say the audio cuts out, its more like it mutes the audio, no sharp "click", radio does not go through a power-up cycle, just mutes then back again every few seconds, only while the engine is running.
Can't make it happen with any vibration or movement of wires and it mutes all 6 speakers.
It works perfect with the engine OFF
I'm dumb founded at the moment.
Bruce Hislop
ON Canada
77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI & ESC.
1 ton front end
http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
My Staff says I never listen to them, or something like that
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