Looks like the filter/drier is plugged. That's not a DIY project. The part is only $10 +- but it will require pulling the refrigerant from the system and cutting the old drier out and brazing a new one in. Figure 3 hours billing for a competent tech with the necessary equipment. I'd say go shopping for a replacement frig and let this one die in peace.
That assumes you don't have a recovery unit or at least a good vacuum pump... a refrigeration gauge manifold... a Turbo torch (minimum)... a stick of Silfos... tubing cutter and some refrigerant of the proper type. Forget the saddle valve, you can use the process tube the factory left for you but you'll need to provide a 1/4" male flare fitting to whatever size sweat and braze it onto the process tube. You can pinch it off with vice grips and remove the fitting and braze the line shut when you finish.
Like I said, get another frig and junk this one. You can confirm my guess about the filter/drier by looking in the back in the compressor area and you'll see the little black torpedo shaped thing where the frost line begins. Thats's the filter/drier... if the frost starts there, I have it pegged right. They do get plugged, especially on very old units.
That assumes you don't have a recovery unit or at least a good vacuum pump... a refrigeration gauge manifold... a Turbo torch (minimum)... a stick of Silfos... tubing cutter and some refrigerant of the proper type. Forget the saddle valve, you can use the process tube the factory left for you but you'll need to provide a 1/4" male flare fitting to whatever size sweat and braze it onto the process tube. You can pinch it off with vice grips and remove the fitting and braze the line shut when you finish.
Like I said, get another frig and junk this one. You can confirm my guess about the filter/drier by looking in the back in the compressor area and you'll see the little black torpedo shaped thing where the frost line begins. Thats's the filter/drier... if the frost starts there, I have it pegged right. They do get plugged, especially on very old units.
