All of a sudden screen is black and white with horz. and Vert. lines. and faint pictute on all channels. Heard something loose inside like a coin rolling around when moving to shop.Opened it up and small 100-01A/A171N watch battery shaped disc.came un-solered from its pins near the degauss.Is this a diode? I dis-charged the 200V cap already.Last summer took a hard lightning hit and tv went multi-color but recovered until now.Thanks