Trying to fix section of lights on pre lit tree. LightKeeperPro tells me this bulb is bad (voltage detector doesn't chirp), but I can't remove it unless I dig it out. Seems to be permanently embedded.

This string runs across 6 branches. The last half lights up, the first half does not. There is one of these white based bulbs at each end of the string. The bulb is not visibly burned out. When I test with LKP, it chirps at each bulb in the string except for this white based one.

I figure if I can determine what's different about this bulb, I can fix the string.

Any help is appreciated! Been driving myself crazy trying to get the lights working!

Thanks and Merry Christmas!