[mythtv-users] Mobo recommendations

[Brian Wood]

On Apr 11, 2007, at 8:29 AM, Yan Seiner wrote:

>
> At this point the problem seems to be periodic; recordings are fine
> during the day but start to flake out in the evening.  I suspect it  
> has
> to do with signal strength so I ordered power injectors for my
> antennas.  We'll see how that goes.
>

Although possible, it's not very likely that you are having enough  
signal level variation from night to day to cause things to "flake  
out". VHF/UHF signals do not depend on atmospheric layers that change  
with the sun. Amplifiers might cause more problems than they solve,  
by creating overloads and distortion products.

The first thing I'd look into is whether the problem is really "night  
and day" or something else related to it (like perhaps you just  
record more TV at night, and so statistically are more likely to see  
problems). Does this happen on more than one channel?

It could even be something like your AC line voltage dropping when  
everyone in your area turns on their lights, TV sets and home  
computers. If your power supply is at all marginal even a slight drop  
in AC voltage could cause the PSU's output to go out of regulation.  
Most "flaky" computer problems are caused by power supplies in my  
experience.

Obviously I can't diagnose the problem from here, but I'd put "signal  
level" way down on the list of possibilities.

Brian Wood
beww at beww.org