Generally the oven temperature will fluctuate as much as 30 degrees above or below the set temperature. The longer the oven is on, the less the temperature fluctuates. If you measure the highest and lowest temperatures readings with a thermometer after the oven has been preheated at least 20 minutes, you should come up with an average temperature somewhere within about 10 degrees of the set temperature. You can calibrate most ovens up to 35 degrees higher or lower if it is off. Any more than that requires replacing parts.
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Just watching regular TV, cable or not, the volume always fluctuates. It does better when I turn the volume up to 10 or 11, but below that, it fluctuates like mad. It's to the point where grab the crowbar and debate on smashing it. The only cables I tested was the power cable and analog antenna. Both were connected securely. I play movies through surround sound, so I don't have to worry about that. It's just regular TV.
I am having trouble with my sound going in and out every 10 seconds. I checked all the cables and they were fine. I also tried watching a movie on my DVD player and the same thing happened. It happens with cable, DVD, and a playstation. I am not sure what to try next.
sound fluctuates during programs
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