Recently purchased the new ECSV2 for my A2500, also purchased the VGA metal bracket to attach the vga plug into. When i use without the expasion bay plate works fine if i attach it to the bracket and it touches the chassis it blanks the screen out on cold boot, warm boot & running etc ... The earth lead is also attached to the ECSv2 and the motherboard mount point in front of the video slot next to the psu. Also tried without the earth lead no difference. i also have a scart and HDMI box runing of the rgb port and i can see a picture on this when the ECSv2 does not display.
Removed the bracket from the vga cable so its just hangin out the back for the time being.