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Post by phishman on Mar 23, 2008 10:52:43 GMT -5
Just pulled the boat and found out the radio doesnt work. checked all the fuses, all good,
there is power getting to the bank that the radio runs from cuz its the same bank as my vhf which is working fine, but still nothing to the radio, connections are good all around and Im befuddled. Can a radio just stop working from last year? I left it in the boat over the winter but it was covered and under cover but it was outside. Too cold? seems like Im missing something easy...
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joc
New Member
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Post by joc on Mar 23, 2008 11:51:38 GMT -5
Don't trust a visual inspection of the wires. Use a DMM & check at the last place you can get access before the radio. If you have power there & still can't find a problem, push two straight pins or needles through the wire an inch or so from the radio & test for voltage there. Don't forget to reseal the holes you made after it's fixed. Or if you are comfortable getting under the hood, check the test points inside the radio instead. Cold probably didn't hurt it, but if you moved it from a cold area to bright sunlight or indoors it may have started sweating & shorted out.
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Post by phishman on Mar 23, 2008 12:18:00 GMT -5
whats a dmm? is that like a voltage meter?
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Post by sideburns on Mar 23, 2008 12:18:59 GMT -5
check all fuses with a digital volt ohms meter,fuses may appear good but I would test them to make sure you have continuity through the fuse,also check the inline fuse connections for corrosion then check your grounds,make sure they are clean
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joc
New Member
Posts: 41
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Post by joc on Mar 23, 2008 14:55:44 GMT -5
Digital Multi Meter. I have a rather expensive Fluke, but you can do just fine with a Wally World Special. You can get accurate voltage readings & check for voltage drop through the various connections & wires. Also you can measure resistance throughout a circuit which will tell you if there is any corrosion, loose connections, weak grounds, cold joints, etc. A few minutes of systematic troubleshooting beats a whole weekend of throwing money at it. Someone else on here just went through this with his bilge pump. Bought parts, destroyed a bunch of wiring, spent a lot of time, only to find a bad connection that he missed with visual inspection.
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Post by Daddys Toy on Mar 23, 2008 19:46:25 GMT -5
Someone else on here just went through this with his bilge pump. Bought parts, destroyed a bunch of wiring, spent a lot of time, only to find a bad connection that he missed with visual inspection. Jerry is being extremely polite. The bonehead he's referring to is me. The bad wire was NO WHERE near where I would expect it, but yes I spent hours and money chasing a problem that could have been fixed in 5 minutes. Now I have still more hours to correct a new problem.  As they suggest, check ALL possible continuity and connections before cutting wires and/or spending money. |
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Post by phishman on Mar 24, 2008 11:01:22 GMT -5
Thanks for the info, havent thrown any money at it yet and will be voltage testing today witht he help of my FIL after work
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Post by phishman on Mar 24, 2008 19:41:03 GMT -5
power all the way into the unit, and still nothing, F&^%$ JBL crap, never again. Walmart special would have lasted longer
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Post by sideburns on Mar 24, 2008 22:40:58 GMT -5
how about ground?
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Post by phishman on Mar 25, 2008 9:13:53 GMT -5
Took the unit out and went to a high end radio store and had them bench test it in front of me. Its shot... gonna pick something up at wally world for 50 bucks and re install using my existing wiring harness, then I need a good cleaning and Im ready to get wet. Shooting for a mid-week Chesapeake trolling/scouting/jigging trip mid next week
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Post by BAD KITTY on Mar 25, 2008 19:40:14 GMT -5
What ever you do....don't buy a Jensen !
POS !
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