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Old 10-21-2018, 11:12 PM   #1
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12 Volt DC Circuit Breaker with Manual Reset gone bad

Has anyone seen the 12 Volt DC Circuit Breaker with Manual Reset go bad?
I have pressed the button but I feel like it's not resetting and I still have no 12V to my 2005
Sierra Sport.
Any help would be awesome. Thanks
Brian
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Old 10-21-2018, 11:16 PM   #2
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Quote:
Originally Posted by Greenroomx1982 View Post
Has anyone seen the 12 Volt DC Circuit Breaker with Manual Reset go bad?
I have pressed the button but I feel like it's not resetting and I still have no 12V to my 2005
Sierra Sport.
Any help would be awesome. Thanks
Brian
Absolutely. Also have seen auto-reset fuses go bad. Just replaced two on my fiver. They are cheap and easy to replace.

Use a multi-meter to check and verify.
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Old 10-21-2018, 11:47 PM   #3
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Thanks!
I'm hooked up and have all 110 but no 12v.
Researched about the breaker and found it. But in just hoping I didnt blow my converter.
Cheers
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Old 10-22-2018, 07:59 AM   #4
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Check the fuses for the converter. You can use a meter to check out put of the converter.
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Old 10-22-2018, 03:33 PM   #5
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Have you replaced the battery or disconnected it? On RVs the + wire is black or red. There breaker you are having the problem with will not reset if wires are crossed.
Disconnect one of the wires on the breaker and then see if it will reset. If it does you need to fix the problem causing the breaker to disconnect.
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Old 10-22-2018, 03:40 PM   #6
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Yes they can go bad but typically don't 'short out' unless maybe from water intrusion, which could then cause the converter fuse to pop.

Why do you suspect you "blew your converter"?
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Old 10-22-2018, 06:05 PM   #7
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So I replaced the bad 12v breaker.
That brought back the 12v power.
I bought a new battery just to be sure.

I'm still popping both 30 fuses in the converter.

I checked all the lines to the battery to insure they are on the right post. That's good

I pulled all fuses in the converter to try and isolate a problem.
Even with those pulled and the breakers down I blow both 30 amp fuses....

Any ideas?

Thanks!
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Old 10-22-2018, 06:12 PM   #8
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Could be several things. A short somewhere, an appliance/motor pulling too much power, or a bad converter. If you are not handy with a meter, might be time to call a service only independent (mobile or shop). Good luck!
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Old 10-22-2018, 07:52 PM   #9
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Disconnect the battery cables, replace the converter fuses then plug in to shore power and see if the fuses blow.
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Old 10-22-2018, 08:23 PM   #10
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You are blowing the reverse polarity fuses, by your description....which blow to protect your converter when the battery wires are connected backwards.

How are you connected to the battery. Can you post a pic? What colors are the battery wires. As had been pointed out above, if you have black and white wires, the black goes to the positive. Some RVs are wired more like a house color scheme, and not an auto.

A pic of your connections would help tremendously


This previous post link below may help:


No electric
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