98 DS Club Car charging problems

[cbs01]

Hi,
I have been scanning the forums for as much info as I can get on this issue. Basically, up until two days ago my cart has always charged fine with no problems. Now, when I plug my charger in nothing happens. Usually it takes 5-10 seconds and the hum starts and you know you're good. Well, this doesn't happen anymore. I did open up the charger (Power Drive II 22110) and bypassed the relay and the charger began to work. So from what I have read I either have a bad relay in the charger or possibly the OBC is bad. I have checked all the fuses that I can find and they look ok. I also tried resetting the OBC per the sticky thread and that didn't seem to help at all unless I unplugged the wrong negative cable?? Can anyone please help me narrow this issue down so I know what to order and replace if anything at all? I wish I had another charger to try but I don't. Thanks a lot!