TV would pop and click about 10-20 times before turning on

Well I hate to be the person to give you the bad news, Vizio stoped makeing any plasma tv's last year because of so many problems. I had a visio and it took an act of congress to get warrenty work complet. Anyways, back to your problem, There is an obvious problem with the main board, it may not be as bad as you think, some times a capicator will hum or make a whistle sound when they go out, ac IC (intigrated circuit) may have went out also, they sometimes will almost blast apart. I fear that if you want to keep the tv you will need to take it to a service center. If it is out of warrenty I would recommend a shop other than Vizio. There is not much you can do on your own without a diagram of the electronics inside. I hope this helps, Good luck.