who services custom control boxes in California?

[WC-Dsigns]

Hello everyone.
I need help finding a professional who can fix my control box.
I posted a couple of times about this issue.
My CNC router has an issue communicating with the ethernet cable.
when I hit the reset button on mach3, the router starts making jerky moves.
I paid a guy from this forum to come out and help me fix the problem. He seemed knowledgeable.
He told me that there was a problem with my 5V power supply and after we changed it with an external one the problem was gone.
but a month later the problem came back and I need to deal with this again.
Do you know anybody in California that can fix my box?
Please let me know if you know a reliable technician.
attached are photos of my control box
Thanks,
WC

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