The Micro P-711 from Dinosaur is a military spec board as are all of the boards that Dinosaur makes, and it's less prone to the ripple DC sensitivities of the OEM Dometic board. I use Dino boards exclusively in all of my replacements.
Another thing you might want to check is the amount of AC current passing thru the rectifiers and riding along on your 12VDC feed into the refer's control board. Using a digital VOM, set it on the AC scale and apply the test leads to the 12VDC feed block at the back of the refer. If you get a noticeable VAC reading....you have conveter problems!!!!! The new Dino board will probably eliminate your check light problems, but you should have your converter checked or in some cases .......replaced!!