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Old 08-27-2011, 07:27 PM   #1
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No power!

Got the argosy back yesterday with a new furnace and BAL jacks. I installed 4 new speakers and it sounded great.

I went to plug in to 120 tour. The ac and it dimmed and finally went out. No 12 volt power either. I checked the 50 amp fuse and it blew. I replaced the 50 amp fuse, checked the breakers and still nothing no 120 or 12 volt anything

I'm charging the battery now as it seems low.

Did I fry the Univolt?

Dan
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Old 08-27-2011, 07:42 PM   #2
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Could one of the speakers I installed be shorting out against the side of the trailer? Everything worked while I was on 12 volt power. It was when I plugged into the 120 when it dimmed and then went out.....
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Old 08-27-2011, 07:47 PM   #3
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Sounds like you have it narrowed down nicely already, Dan.
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Old 08-27-2011, 07:53 PM   #4
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Quote:
Originally Posted by Dan S View Post
Could one of the speakers I installed be shorting out against the side of the trailer? Everything worked while I was on 12 volt power. It was when I plugged into the 120 when it dimmed and then went out.....
The speakers have nothing to do with 120 power. If one of the speakers was shorting, it would take out the stereo fuse and it would have done it on the 12v power.
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Old 08-27-2011, 08:00 PM   #5
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Am I reading that nothing works now. No 120 volt, no 12 volt . . . nothing?
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Old 08-27-2011, 08:00 PM   #6
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.... So it may be as easy as just checking the speaker wires?
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Old 08-27-2011, 08:04 PM   #7
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Correct, nothing is working. I checked the breakers and they are not tripped.

I plugged the trailer into the truck via the 7 prong plug and the running lights work but not the inside lights or anything else....real frustrating since I just got it home after a new furnace installed and the speakers working and sounding good.
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Old 08-27-2011, 08:06 PM   #8
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This should be fairly straightforward to test. If you have one of those electronic meter gizmos. You can check the wiring from points A to B on different sections of the wiring beginning where it comes in the trailer.

The interesting thing is that the speakers were the only thing that changed, which usually points to the primary suspect. It may just be a coincidence with the speakers.
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Old 08-27-2011, 08:49 PM   #9
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I would not think both systems could go out at the same time unless the batteries were already dead and the univolt was powering the 12v system thru the dead batteries...and then the 120v breaker from the 120v circuit you plugged into (house, garage) tripped then you turned on the AC. That would cut the power to the 120v system and the 12v systems at the same time.
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Old 08-27-2011, 09:11 PM   #10
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Are you sure the plug that you are plugged into is still hot? Maybe the breaker that powers the land line plug is tripped. I would remove the speakers and look behind them and see if you damaged a 110 volt wire when you installed them. Some where you may have pinched off the insulation on one of your 110 volt wires and shorted it out when you did the install on the stereo.
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Old 08-27-2011, 09:22 PM   #11
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The plug is hot because I'm using it for the battery charger. If it was just the shore power my 12 volt should be working since the battery has to have enough juice by now to simply turn a light on.
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Old 08-27-2011, 09:50 PM   #12
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You should look for a 50 amp fuse on the negative side of the DC circuit. They are normally mounted on the skin of the trailer.
As far as the 120 volt AC power goes, I would start by turning off all of the circuit breakers, then turn on the main and one of the remaining breakers. Check to see if things work, if so turn on another breaker and so on. You should be able to isolate the circuit and then determine where the problem is. Get the 120 volt problem resolved first, then go to the 12 volt DC.
Let us know what you observe.
Are you using an extension cord? If so the problem could be in the size, especially if you run the air conditioning.
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Old 08-27-2011, 10:25 PM   #13
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I've been charging the battery and decided to test things. After I plugged in the 110, the lights and ac worked but the stereo just for a minuet. As I was dinking around, if I turned a light on the stereo would dim or turn off.

I then unplugged and tried the 12v but nothing worked. The 50 amp fuse mounted on the floor appears pitted or a little odd but not blown and still intact. I dint have another 50 but will get one in the morning.

I'm going to leave the 110 plugged in over night and see what that does....would that not be charging the battery via the Univolt.

Still very frustrated but thanks to all for the advice.

Dan
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Old 08-28-2011, 06:31 AM   #14
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Those screwdriver looking things with the bulb in the handle only cost a few bucks. They make it really easy to test for 12v current.
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