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Old 05-14-2014, 08:55 PM   #1
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40 amp fuses at inverter

I blew the two 40 amp fuses at the inverter by hooking up the battery cables in reverse. I have not replaced the fuses yet. Now, when hooked up to shore power I do not get sound through my speakers with power the genesis radio. Also, the DVD player will not insert a disc. I will find replacement fuses but I'm wondering if the radio needs those fuses to fully function. I did pull the radio from the wall and the fuse there is not blown.
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Old 05-14-2014, 08:57 PM   #2
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The radio operates off the 12V, so you do need those fuses for it to run
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Old 05-14-2014, 11:25 PM   #3
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Tewks, just to clarify, it's the CONVERTER, not the inverter.

and since those fuses are from the battery and the radio is 12v, then it may need them to work.
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Old 05-15-2014, 12:03 AM   #4
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Check for a fuse holder behind the radio.
Dont ask me how I know.

Ps you'll have to pull the radio.

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Old 05-15-2014, 06:29 PM   #5
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Replaced the 40 amp fuses and still no sound from speakers when set to on position. Also will not accept a DVD. Any suggestions? The fuse behind the radio looks fine.
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Old 05-15-2014, 06:32 PM   #6
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Originally Posted by Tewksburyduck View Post
Replaced the 40 amp fuses and still no sound from speakers when set to on position. Also will not accept a DVD. Any suggestions? The fuse behind the radio looks fine.
does your other 12v stuff work(lights, water pump, furnace), without being hooked to shore power?
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Old 05-15-2014, 06:37 PM   #7
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If the radio is turning on, ie the display is lighting up, but you get no sound you may have damaged the radio. The fuses will protect the wires and such from overheating but they don't react fast enough to stop the radio from being damaged from the reverse hook up, DC electronics don't like to be hooked up backwards.
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Old 05-15-2014, 06:39 PM   #8
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Furnace, lights, and water pump work while on battery power only.
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Old 05-15-2014, 06:58 PM   #9
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Furnace, lights, and water pump work while on battery power only.
It does not take much reverse current to fry a computer. Sounds like it could be damaged. Did you check both fuses in the radio? There is one that supplies "full time" power (clock, panel lights, etc) and one that supplies "part time" power (all the rest - like DVD player).

The full time power is an inline fuse and the part time power is a "blade type" in the back of the radio.

You may need to meter them for continuity since they can fail at the solder joint and the open may not be visible.
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Old 05-15-2014, 07:08 PM   #10
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The blade fuse behind the radio looks good. I have not seen an inline fuse. I will look now though.
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