Dometic fridge problem

[2013NHSiestaowner]

My 2013 Siesta Dometic fridge has been reliable until recently. On propane now, it “might” fire but after a variable period of time both lights flash meaning “check gas if flashing”.
When I pulled the cover, the igniter was popping but I didn’t see the spark so I pulled it and sanded the tip. It fired up with a “poof” of yellow flame and brought down the temp 25 degrees— then quit. Now when I fire the igniter I sometimes get the “poof” but no sustained flame— and, yes, my stove works and I have 3/4 tank of propane.
Any ideas before I take ‘er to the repair shop?
Thanks
Peter

[abjbrtd]

Here's a good YouTube.
Let us know if it helps.

https://m.youtube.com/watch?v=pSvkV9Ip85c

[2013NHSiestaowner]

Thanks, abjbrtd, whoever you are-- the video link you sent me held the key to a successful outcome (I think-- I'll wait until later to see if the fridge stays lit). I never would have thought the small amount of rust in the burner tube would put out the flame.
Whenever I'm able to solve a mechanical problem I feel I own a little bit more of the machine and understand more about its workings.
Whether I'm fixing one of my airhead BMW bikes or my RV I am beholden to those who had trod the road before and freely offer their experience and wisdom.
It takes a village and we have it.
Again, thanks
Peter

[abjbrtd]

Your very welcome, pass it on when you get a chance.
I'm from the 70's so Japanese bikes in my past, enjoy yours.

[Dick Rohde]

You may need to change out the circuit board. I put a Dinosaur P 711 board into mine and it cured the problem. Board costs between$125&$150 and I think you can get it at tweetys.com

[2013NHSiestaowner]

Hi Deadeyedick--
So far cleaning the burner tube seems to be the answer. Its hot here in NH so its taking awhile to cool down, but its happening.
I'm going to add a cooling fan for the coils and we'll see what that does.
So far, so good.
Thanks.
Peter