I have a Directv DVR40 that has been exhibiting the "blue screen" when the tv is first turned on for the past several days..If left alone, it has revived itself after 10-15 minutes. When playing, it has also cut off suddenly to the blue screen on several occasions, but then again revives. Currently it has been working fine for the past 3 hours with no further difficulty. Channels, saved programs and power up all are working fine at the moment.
Is this consistent with a failing power supply? OR??