Pio's website has a support section, and here is one of the FAQs:
I have lost the TV Guide listings on my plasma TV. How do I get them back?
1. Go to TV Guide.
2. Go up to the navigation bar.
3. Arrow left or right, to the SET UP tab.
4. Arrow down once to highlight CHANGE SYSTEM SETTINGS. (Do not hit enter; only highlight it.)
5. Enter code number 653274147. You will not see anything happen until you complete the code. Once you complete the code, the unit will perform a power cycle. When this is completed, turn the unit off. The TV Guide should start to repopulate within 24-48 hours.
If the TV Guide still fails to load, or has never loaded, please contact our Product Support at 1-800-421-1404. They will check your connections and complete a diagnostics form, to troubleshoot further.
How many hands do you have, 4?
I have lost the TV Guide listings on my plasma TV. How do I get them back?
1. Go to TV Guide.
2. Go up to the navigation bar.
3. Arrow left or right, to the SET UP tab.
4. Arrow down once to highlight CHANGE SYSTEM SETTINGS. (Do not hit enter; only highlight it.)
5. Enter code number 653274147. You will not see anything happen until you complete the code. Once you complete the code, the unit will perform a power cycle. When this is completed, turn the unit off. The TV Guide should start to repopulate within 24-48 hours.
If the TV Guide still fails to load, or has never loaded, please contact our Product Support at 1-800-421-1404. They will check your connections and complete a diagnostics form, to troubleshoot further.
How many hands do you have, 4?
