I am a very handy person and have done many plumbing and electrical repairs and upgrades over the years but I cannot wrap my head around why I can't get this dometic refrigerator to work on either gas, a.c. or battery. First, let me give everyone some background on this fridge. We recently acquired our 1997 Viking pop up model 2490 because it can sleep up to 9 people. The fridge functioned on a.c. and seemed to the touch that it was pretty cold. I was told by the seller that the gas mode of the fridge didnt work. Upon closer examination I noticed that the gas valve was stuck in the high position and wouldn't depress at all. That immediately told me that even if there was another reason why the gas wasn't working, that I needed to replace the valve because I certainly didn't want gas leaking while we were cooking on the stove (which works fine in both locations). So, after cutting off my left arm and giving it to the company that sold me the new valve, I replaced it. (Picture attached) After doing so, not only will the gas NOT flow to the burner after many many attempts to light, but now I can't get the fridge to work on a.c. anymore. One point I need make though, when the fridge was working on a.c., I noticed a small buzzing sound (electrical i guess) coming from the direction of the back of the fridge. It was intermittent. I never located the source of the sound but after replacing the valve, the sound has not returned and the fridge no longer works. Was the sound a failing part that finally went kaput? I dont know. Here is what i have already done to try to isolate the problem: 1. Cleaned the burner and tube with compressed air. ( orifice was in very good condition and the hole was visible when I held it up to the light) 2. Checked the ohms on the a.c. and dc switches and the switches appear to be ok 3. Checked the a.c. and dc heaters and both ohms check out and don't have a broken connection. 4. Checked the outlet in the back that you plug the fridge into and it has power. I tried running it through that outlet as well as plugging the fridge directly into a power source. Neither work. 5. Replaced piezo igniter. Visual inspection shows it is working just fine. I've tried lighting with it as well as a long lighter. 6. Checked fuse on dc side near back of fridge. Ok 7. Checked fuse near battery. Ok 8. Checked circuit box and fuses there. Ok This is a 20 yr old fridge and does not have any computer board. There are no round glass fuses anywhere that I can find. I do have one confession: I am waiting for some type of humming sound coming from the fridge to tell me it is operating because there is no light or other indicator to tell me if it's actually on. I hear nothing. How do I validate it is operating? ANY positive thoughts on what I've shared, I'd really appreciate it. I just don't want to have to give my other arm for another part that only cost $5 to make. Thanks.