I have an electrical burn smell inside the 49sd, all seems to be working... just the smell that is stronger inside.

Since there is no mention of the refrigerant, and some models are now using R-290 (propane), it's hard to tell what these pressures represent. My suggestion is to remove the refrigerant and weigh in the exact amount the manufacturer requires. This eliminates alot of guess work and is usually the best place to start.

most refrigerators have a small drainage hole leading from the inside rear of the compartment to an overflow container behind the unit, pull the unit away from the wall and check if the liquid in the container has become stagnant, if so simply clean it out and run a small amount of bleach down the hole to disinfect the tube.
hope this helps.

your freezer might be having blockage on the drain pipe thus not allowing water to flow on the drain tray if the drain tray is mounted on the compressor and its dry then the compressor or the condensor pipes are burning the drain tray. the solution to this problem is to service your freezer

does the compressor make any noise at all? If not, there is a control problem. If it does make noise I need further info and details. Let me know.

youneed teast equipment like a volt ohm meter to start truely i think you should have a pro out to see if your compressor did not burn out

Change the temp control,check to see if it is iced up on the evaporator

Compressors will normally run hot to the touch, but should not have a burning smell. If the compressor does need to be replaced you would be better off getting a new freezer. Compressor replacement with the labor can run into more than a new freezer.

disconnect from mains. take cover off compressor electrics. check starting device - easy to replace

Keep it unplugged and look for burned wires, or rubber wires hardened from extreme heat. This will be a good start in finding what is going wrong. One more thing to check is if the compressor is heating up after running for a while. Let it run for 20 min or so, shut off the power and feel the compressor. Is it hot?

fridge has timer to adjust for defrosting, but the not working working you to manual defrost the unit to avoid ice formation inside the fridge.