OK we have a Norcold N811 and it was working fine a few weeks ago. We powered it fdown when we got home. When I tried to power it up again to get ready for another trip the display is blank and it does not respond to the on/off switch.1) 12V Fuse is OK2) Checked 120V outlet that the fridge is plugged into with an outlet tester and it is fine.3) Propane is OK, runs stove burners and oven OKso this seems to come down to the circuit/power board.I don't know where the power board is tho, is it inside this black box in the outside access hatch?Also how can you get to the on/off switch, there doesn't seem to be any way to open the panel. Do you have to pull the fridge out from the wall?Thanks for any help or suggestions.

Have to have 12VDC TO the fridge before ANYTHING will workNo DC...NOTHING works (Display, control panel, interior light, AC Element etc)That Black box ....cover for circuit boardOn the Circuit board at couple of fusesGlass 5A for the AC ElementAuto Blade 5a for ALL DC Also the RV Main DC Fuse goes to 12VDC+ Terminal on circuit board (Yellow wire?) and GND1 Terminal (Neg) S/B White wireSee Pg 11 for DC informationSee Pg 45/46 about removing cover on lower circuit board AND the display control panelN6XX/N8XX Service ManualPicture of a Norcold N6XX/N8XX circuit board

You might make sure that the 12 V battery is not discharged.

Flute Man wrote:You might make sure that the 12 V battery is not discharged.I have a bank of four six volt golf cart batteries and have a volt meter on the 12V bus. All is well there and all the other 12V gear is working. I'll pull that black box off in the morning to check the fuse and I'll check voltages on the board too. I'll call the mobile RV guy if I don't figure it out in the AM.

This is what's behind that black plastic box.Arrows are to the fuses.

Itinerant1 wrote:This is what's behind that black plastic box.Arrows are to the fuses.That doesn't look like a circuit board for the Norcold N811 like OPs fridge model

Norcold N811 fridge-no power | Good Sam Community

Old-Biscuit
Explorer III
Oct 06, 2020
Have to have 12VDC TO the fridge before ANYTHING will work
No DC...NOTHING works (Display, control panel, interior light, AC Element etc)

That Black box ....cover for circuit board
On the Circuit board at couple of fuses
Glass 5A for the AC Element
Auto Blade 5a for ALL DC

Also the RV Main DC Fuse goes to 12VDC+ Terminal on circuit board (Yellow wire?) and GND1 Terminal (Neg) S/B White wire

See Pg 11 for DC information
See Pg 45/46 about removing cover on lower circuit board AND the display control panel
N6XX/N8XX Service Manual

Picture of a Norcold N6XX/N8XX circuit board
Flute_Man
Explorer
Oct 06, 2020
You might make sure that the 12 V battery is not discharged.
agesilaus
Explorer III
Oct 06, 2020
Flute Man wrote:
You might make sure that the 12 V battery is not discharged.

I have a bank of four six volt golf cart batteries and have a volt meter on the 12V bus. All is well there and all the other 12V gear is working. I'll pull that black box off in the morning to check the fuse and I'll check voltages on the board too. I'll call the mobile RV guy if I don't figure it out in the AM.
Itinerant1
Explorer
Oct 07, 2020
This is what's behind that black plastic box.Arrows are to the fuses.
Old-Biscuit
Explorer III
Oct 07, 2020
Itinerant1 wrote:
This is what's behind that black plastic box.Arrows are to the fuses.

That doesn't look like a circuit board for the Norcold N811 like OPs fridge model
Itinerant1
Explorer
Oct 07, 2020
Old-Biscuit wrote:
Itinerant1 wrote:
This is what's behind that black plastic box.Arrows are to the fuses.

That doesn't look like a circuit board for the Norcold N811 like OPs fridge model

You're correct it's an 821, I had to look at my fridge for some reason I was thinking it was an 811. My apologize. :(
dougrainer
Nomad
Oct 07, 2020
How come NOBODY has stated the obvious FIRST thing to check? The Hi temp switch On the Cover of the FLUE????????? Doug
Old-Biscuit
Explorer III
Oct 07, 2020
dougrainer wrote:
How come NOBODY has stated the obvious FIRST thing to check? The Hi temp switch On the Cover of the FLUE????????? Doug

Ding, Ding, Ding......winner/chicken dinner!
dougrainer
Nomad
Oct 07, 2020
Old-Biscuit wrote:
dougrainer wrote:
How come NOBODY has stated the obvious FIRST thing to check? The Hi temp switch On the Cover of the FLUE????????? Doug

Ding, Ding, Ding......winner/chicken dinner!

I was shocked you did not mention it. Doug
Old-Biscuit
Explorer III
Oct 07, 2020
dougrainer wrote:
Old-Biscuit wrote:
dougrainer wrote:
How come NOBODY has stated the obvious FIRST thing to check? The Hi temp switch On the Cover of the FLUE????????? Doug

Ding, Ding, Ding......winner/chicken dinner!

I was shocked you did not mention it. Doug

Got 'side tracked' about lower circuit board cover......
You know----shiny things LOL