HOW TO ENTER SERVICE MODE TO SAMSUNG [TVP-3350 _ TVP-5050 (TV & VCR COMBO)]
To enter service mode, press the following buttons on the remote control in sequence.[standby => p.std => menu => sleep => power on]
To call and item to adjust, usee CH+ or CH--ve buttons on the remote control.
To adjust the data value to selected item, use Vol+ or Vol--ve buttons on the remote control
To exit from service mode, press power OFF