Can anyone point me to a video or help explain how to remove the sockets on an ATI Sunpower? I see they pop in, but don't see how to remove them without breaking them. I have a second hand Sunpower that has two bulbs out. Bulbs 1 & 3 are out. I tested the bulbs first, and then swapped the mid and bottom ballast out but the bottom two lights are still out. That tells me it's not the ballast. I'm assuming next in line is the sockets?