I have taken the Hive owned sewing machines in to be looked at and potentially serviced. The outcome is as follows:
New Singer - Electrical issues, highly likely to be on the systemboard of the machine, not worth repairing.
Old Singer - Mechanically sound. the internal belt is fraying, it may last another 2 weeks, it may last another 2 decades. $80 to clean and tune up. It is a basic machine.
Bernina - Appears in good condition, except for the power cable needs to be replaced. This will require scrounging ebay for the correct plug. ballpark is $40 - $80 unless we can print a replacement plug and wire it to that existing cable. (it is the end that goes in the machine)
Brother Embroidery machine - Mechanically sound. $80 to clean and tune up. $80 for the software and hardware to get digital files onto the 20 year old machine to embroider.
Given this information, It may be the most worthwhile to purchase a reliable Sewing machine and dispose of the existing singer machines. A good machine appears to be around $250.
If someone wants to try modeling and printing the plug for the Bernina, that would be a basic machine that should run until every one of us is dead. If not I can see if I can track down that model power cable.
The embroidery machine is old, it can almost buy it’s own beer, and will require $150-200 to get usable. Newer units, specifically recommended to me was the PE-770, can be tracked down for $350 -$400 used and doesn’t need the weird DesignCard hardware.
I was looking to get a few more voices in the discussion to get some additional opinions on what direction we should go with the sewing equipment we have access to.