Issue with Matrix

I am having an issue and thought I could post here. If not the right place if you could point me in the right direction. I have three matrix each with 3 strings of 50 square pixels 150 per output with 4 outputs per screen. When the controller comes on one screen comes on and stays on. This messes up with the other two screens not working correctly. This is intermediate (sometimes everything works perfectly) but when the 1st screen come on with the controller things go wack. Does anyone have any idea why the screen would come on white with the controller? Do I have a bad pixel string? I appreciate any assistance. Thank you kindly

Hi Jerry,

Without exact details on the configuration and how things are controlled some of my initial thoughts are:

1. A bad network connection, wire, port, etc giving false data sometimes.
2. Swap the connectors and move the first panel to the second set of ports and do testing to see if the issue follows the panel or stays with the ports.
3. Provide a bit more in the way of your setup, FPP, controllers, configurations, perhaps some screens hots might be useful.

Hope this helps to get the ball rolling.

What controller is it? Do you have a photo or video of the problem? There are a lot of places along the way between the player and the matrix to check, the best bet is to find some points in the middle where we can get some info to see if the problem is before or after, so more config info would help a lot.