black box--)magnavox model #19psc50121, sn36869988
A black box appears every time I have the TV on. covers 90% screen, other video is observable on remainder of screen.
Clicke remote and the box does away for a few seconds.
MY ONLY TV and my little girls are sad.
model # 19PSC50121
Serial # 36869988
This does not work:
To disable the Demo mode, perform the following:
Turn on the TV.
Simultaneously hold down the Vol+ and Vol- buttons on the front of the TV. Do not use the remote control.
Hold for about 6 seconds
Certain model TVs may turn off, others will not. But in either case, the Demo mode should be disabled.
All should be well after these steps have been followed.