Is your cord from the power strip plugged into a grounded outlet? (3 prongs)
Also, make sure the cord from the TV is properly orientated in the power strip. (Wide prong on the TV cord plugged into the wide prong of the power strip.)
Your wall outlet is grounded? (3 slots)
If so, double check all your electrical connections in the cab. You might want to check the wall outlet to see if it is really grounded.