It may have nothing to do with the upgrade. Tuner damage is cumulative and can begin quite a long time before the symptoms manifest themselves. The key is to protect your unit from the start, not after a problem occurs. After the failures begin, it's probably too late.
I agree, it has nothing to do with the upgrade. My unit worked perfect for almost a year, and then all of the sudden, the picture on tuner 2 started to distort. Then the tuner would go out on different occasions and say searching for satellite signal. Then when watching tv, it would randomly shut off and reset itself. These units were terribly designed, so you have to be careful with them.
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