Refrigerator is a GE TBX20DFB, circa 1983. The icemaker appears from the schematic on the inside of the plastic cover to be a totally electro-mechanical model, which I believe is #907996. This icemaker has been running continuously since new, so no complaints (30 years)! From reading your FAQ's and using some common sense, it appears the overall best repair move to make is replace the ice maker with a Whirlpool unit. Again, from your FAQ's it seems that the correct recommended Whirlpool unit is #4317943.
Is there a complete add-on kit available that includes this icemaker, so I can replace the inlet-shut off valve and anything else that needs to be replaced??
AND - What should I check on this particular icemaker BEFORE I spend the loot on a new icemaker? Heck, this one worked for 30 years and if I can troubleshoot this one and just replace a part I could be golden! What would the troubleshooting procedure be?
Please confirm my accuracy on the above Whirlpool part number and sanity on the rest of my inferences, deductions, etc. etc.... gone to ice cube trays in the mean time......