Lost Quantum Wifi connection

[Shesby]

Yesterday while out boating, I turned on the quantum radar. It worked fine for a while and then suddenly stopped working. I checked the fuse (good) and tried to re-pair with my eS78-no luck.
Today I tried again to re-pair with no luck. I did a system reset and that didn't take care of the problem. I took the radome off to verify that there was power at the plug (there was). However, I noticed that I could hear liquid (water) splashing around inside the radome. I'm not sure how water could enter the enclosure.
I looked at the FAQ addressing the connectivity problem and followed the procedure closely.
I noticed that the MFD was showing that it was v17.45 (I think it had been v17.46 before I did the system reset). I downloaded and installed v19.03 firmware.
I don't know how to verify the Quantum software since it does not show up in the maintenance devices screen.
I triple and quadruple checked the SSID and passcode.
The wifi is set to "On"
I tried to verify the wifi communications circuitry with RayViewer as well as RayRemote. Both said they were connected to the MFD wifi but neither would find the display.
I pulled the fuse to the Quantum and after a short time I reinserted it.
I again tried to pair with the radar and again was unsuccessful.