i read a lot of blogs for people trying to fix problems and almost every time i check a blog the pros contribution is always to say call a pro. furthermore they usually don't give the answer. i wonder why, hahahah? there are only a few that say anything helpful. and pros when they come they more often than not don't fix the problem permanently or they totally bullshit you and try to sell you a new system, when only one little thing was wrong. i wonder why on that too i say fecisiously. so if somebudy have any knowledge whatsoever i say give it a try and they will be better off trying to fix it themselves even if they were to fail half the time. That said, if one has no knowledge whatsoever and no mechanical aptitude then don't fuck with electricity, that's for sure.