I have a Toshiba TN43V71... Is it really critical to disconnect it? I disconnected mine last night, and ended up hooking it back up cause when I did disconnect it, my picture looked like [censored]! The convergence was way off, and i was unable to re-align it. I connected it up and it was great again. Is it really only important to disconnect the SVM when you have a HD TV, or does it also apply to analog TV's like mine? I used the procedure that I found a Toshiba tweaks site.