LBA10s won't stay in charge mode...?

[gtxracer]

I've been charging my Neu 2s packs hooked together with two LBA10 balancers on my 1210i for a few months now. I have two 5000 packs and two 4100 packs and can't get the 4100s to stay in charge mode. I hook everything up, press the mode button, and all LEDs shut off after that. Doesn't do it with the 5000s (which are older) and these are pretty fresh lipos, under 10 runs on them. What is going on? I've tried charging just one pack and it still does it. I'm ready to throw them across the yard it's getting frustrating. I want these to work on my trip this weekend so I have multiple sets of batts!!!