Issue with Tunze 6105 Power connector

[tangstank]

I'm facing a strange issue with a newer 6105 pump now.
The pump (A) stopped working this evening, but the Red light on the power supply was on.
I Connected Tunze B's (6105) power supply to Tunze A pump & A worked fine.
I Connected Tunze A's power Supply to B Pump & the B Pump is not working either.
So this implies the power supply of A could be bad.

I checked the output voltage at the Tunze A's power supply using my volt meter & it reads ~18V DC.

Now I'm stumped on what the issue is. Please suggest.

 

[TropTrea]

TangsTank
I have a very simular issue using just one pump. Only when I measure the powersupply model# 9935 I get 0 VDC. When I hooked my pump up to another reefers power supply it worked fine. Checked the parts lists and Tunze catalog and they nowhere list a model 9935 power supply for sale. I hope considering my pump is only 4 years old that they I won't have to buy an entire pump when only the power supply died.