[TG] [TG11] M232 Grainy Picture

[Robinsonh2o]

I recently had a raymarine technician come out to update the software. He wasn’t too confident that the problem would be fixed since he’d seen the issue before and ending up having to replace the unit in order to resolve the issue. Unfortunately it doesn’t appear the update fixed my issue (see attachment). Is there anything else I can troubleshoot or should I coordinate a return of the unit?

Thanks in advance.