Sorry, I had tried to reply but RC was acting funny yesterday, I kept getting a DOS attack preventer that required repeated log ins.
The 6065 should be at least as reliable as a 6100, the only electronic component is a thermal safety, it can fail but only if the pump repeatedly cycles on and off from being seized over an extended time, this would be at least a week of running in that condition. It can be repaired, but likely needs a new motor block, which is still generally worth doing if it is in good condition otherwise and I am happy to check it out if you send it in.