Both E80's rebooting when SR100 comes on

I posted this earlier today but it is not showing up so here goes again;
I have two E80's with a DSM300, a SR100, raymarine radar, a network switch and integrated with a Simrad AP16 autopilot. The system was working fine until recently when all of a sudden both E80's started to reboot and if left unattended they would constantly reboot again and again etc. I narrowed the culprit to the SR100 whereas when the SR100 is powered off all is fine but when on the E80's go into the continuous reboot.The software version for the E80's is 5.52. Any suggestions?

Thank you