Dolphin 4 power supply socket failure

by Frank
(NJ)

A few years ago to fix an intermittent I changed the amphenol plug which connects the robot cable to the power supply.

This year it was behaving like there was an intermittent again but the cable and plug were good. It turns out the amphenol socket on the power supply that the cable connects to had deteriorated.

The socket is "DOLPHIN 5020011 Amphenol Socket for Power Supply". Amazon link is https://smile.amazon.com/dp/B074RG8HMB, price was $15.60.

The repair is very easy. You may not need to disassemble the power supply, it depends on the cable slack.

1) Remove the two screws holding the socket to the power supply.
2) Pull the socket away from the power supply. Hopefully there is sufficient cable slack.
3) Move the wires to the new socket
4) Put the socket in place and put the retaining screws back

NOTE:
* There are 4 connections in the socket, you will only be using 2 of them
* Make sure you put the wires in the correct connections
* You will need a very tiny Allen key for the socket connections

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Jul 29, 2025
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starstarstarstarstar 		Can switch to the other two pins if necessary
by: Anonymous

I was having intermittent problems again this year. Power tested good at the socket side of the connector. Power was inconsistent at the plug side. Since the connector has 4 pins and only uses 2 I moved the two wires on the socket side and the plug side to use the other two connectors. Working fine again now. I've had this robot for about 18 years. Only parts I've replaced are the impeller, the guide wheels, and the amphenol plug and socket. I wonder how many get discarded due to power problems at the plug or in the cable by the plug.
Sep 14, 2022
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starstarstarstarstar 		Thank You...
by: admin

...for this valuable contribution

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