I have a Sony GTV Box and the clock is 3 mins. behind the actual time. I went into settings and unchecked the auto setting and did a manual set. The next day it was behind 3 mins. again. It does not matter if it is set to auto or man. it will still go back 3 mins. the next day after a reset. It does not get any further behind than 3 mins. if I let it go for several days. Is there something else I can do to get it to give me the correct time?