DRS4A radar picture intermittent

[south_florida_tech]

Good day to all, I am working on a boat with a DRS4A pedestal mated to a MFD12. Recently the radar picture on the MFD has become intermittent with one to two spins providing a good picture, but then randomly the picture will be only a ball in the middle of the picture about 1 inch in diameter. and then after a spin or two It will return to a good radar picture, this pattern continues indefinitely. Any advice correcting this issue ? Thanks in advance.


- I apologize if I broke forum format with this post, I am new and I will read up on the rules

 

[Johnny Electron]

Do you have any photos of the radar as it is installed on the boat, so we can see what is near the radar scanner? Was something recently added or changed on the boat?