Hitachi 43fds01b has recently started turning off and flickering during commercials.. aspect ratio changes.. Have gone through manual and found a "commercial skip" button, but no way to reset it to zero. all the settings are from 30 to 180 for this feature.
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Re: Hitachi skips over commercials & flickers
If by saying the "aspect ratio changes" you mean the picture shrinks from top and bottom, I would suspect an intermittent short inside one of your picture tubes. The commercial skip function is not causing a problem here. It is the rapid change from dark to light that I believe is putting an extra strain on a weak or defective picture tube.
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Different channels are broadcast in different aspect ratios, depending on the network and the show(s) being broadcast. Many older show are still broadcast in the 4:3 ratio to avoid distortion. Currently, there is nothing in the broadcast signal that tells the TV what aspect ratio to use. Therefore, TV remotes have a selection button (mine says "P.SIZE") that allows the user to change the aspect ratio to optimize the viewing experience.
If the TV works well with your dvd and regular programs there are no issues and the flickers due to commercials can be due to excess signal strength or even poor control from the set top box. Try with another set top box to confirm as some of them can process noise which can cause this issue.
If it flickers on start up it will only get worse. Mine got were it took over 3 hours to settle down, and never would stop flickering with DVD'S. Solution for mine: Replace bad capaciator on input circuit board, I found it by using a heat gun to speed up coming on process, Cost me 62 cents to replace the capaciator my self.
I have a42hds52a and someone threw something at the screen and broke it. so I am looking for someone who is willing to get rid of thier tv or looking to buy one for parts. call Richard At916-308-9272 [email protected]
Sounds like you're blessed to have a tv like that!
Some sets have settings that will cut down the sound during a commercial. Haveyou looked at your owner's manual? This tv may have setting to cut out the picture also when commercials come on.
From a technical view point generally commercials have stronger signals than regular programming. This may be overloading your set.
If this is the case, then you need to have it checked by good technician. A poorly operating power supply (not regulating properly) could possibly cause a problem like this. Also automatic gain control circuits could be not working properly.
It seems you might have cold solder connections on the picture tube socket or on the picture tube drive board. If your not a tech please call someone to assist you with repair as you can be seriously hurt by the HI voltage insiode this set an or cauae more problems with the set. Good Luck