LG 42PN450P Owner's Manual page 45

The model and serial numbers of the TV are
located on the back and/or one side of the TV.
Record them below should you ever need service.
MODEL
SERIAL
LG Customer Information Center
For inquires or comments, visit www.lg.com or call;
1-888-865-3026
USA, Commercial User
1-888-542-2623
CANADA