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Old 07-23-2021, 09:35 AM   #1
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Norcold fridge in my Dolphin

I have dealt with many fridge issues but havenít seen anything like this. AU light is rapidly flashing. Monster board is making a cross between a buzzing and clicking noise. Whole board is vibrating! Unplugged everything including shore power and it continued so killed the battery switch and it stopped. Turned power back on started fridge and same thing. Now itís done and wonít turn on! Any feed back would be greatly appreciated!
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Old 07-23-2021, 10:11 AM   #2
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DO you still have Display Panel Lights...interior light in fridge??

NO.....
Loss of DC to Fridge Circuit Board
*Main Fridge Supply Fuse blown
OR Recall Box RED Light on--Model dependent

DC Fuse on Circuit Board has blown.....3A or 5A Auto Blade Type


As for the AU Flashing and circuit board buzzing/clicking/vibrating
The AC Relay (which is DC Triggered) on the circuit board has failed
New circuit board ---possibly upper display panel also

MODEL of fridge??????
Many different models/version produced so Brand/Model are always needed when troubleshooting
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Old 07-23-2021, 10:47 PM   #3
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it's a norcold 1200 fuses look ok. black box doesn't have red light. could not turn the fridge off without killing the power. left it for a couple of hours and it started back up on it's own and is working fine now. Can that relay stick to where it is activating rapidly? felt the relay on the monster board and it seemed to be coming from it. I don't know about the light in the fridge as I was running around trying to figure out how to stop it. Any insight is appreciated! As I said it's working fine now but I assume the issue will resurface.
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Old 07-24-2021, 11:07 AM   #4
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Upper display controls/buttons hanging up hence the Flashing AU and not being to turn fridge off
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