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How do you unlock the tv to program the channels. RCA J20

Customer Question

How do you unlock the tv to program the channels. RCA J20521DW I bought this TV from a hospital auction. It was being used in patient's rooms. Not all channels are programmed in. Also on the back of the TV there is a switch MASTER DISABLE. Also there is a port--RCA REMOTE PORT.
Submitted: 4 years ago.
Category: TV
Expert:  Lindie-mod replied 4 years ago.

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Customer: replied 4 years ago.
How do you unlock the tv to program the channels. RCA J20521DW I bought this TV from a hospital auction. It was being used in patient's rooms. Not all channels are programmed in. Also on the back of the TV there is a switch MASTER DISABLE. Also there is a port--RCA REMOTE PORT.
Expert:  Joe replied 4 years ago.
If it is really locked up, then you need to unplug the unit from the wall for 40MIN, and that will reset back to normal, but if that is not the case then you need to go to the menu and pick what type of signal you are using and then it will let you auto program the set.

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