I can't give you a direct answer to your question except that 12 volt power is clearly not reaching the lights on the panel. I suppose it is possible that the panel has gone bad.
You might try
Bryant RV web site. Go to the service documents section and you can download the tech service manual for your fridge. Chris Bryant is a participant on this and other forums and has posted the manuals for our access. He runs a service business in Florida and can probably supply any parts you need, or at least direct you to a source.
Hope this at least gives you a starting point.