Question about Zenith H36F46DT 36" TV

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The picture is dark

We have tried to brighten the picture - but it does not lighten up - some shows we can not watch if the back ground is dark.

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Hi This could be one of three possibilities, one the High Voltage Screen Adjustment is off, Two the Picture Tube is Weak, or Three there is a problem with the Video Drive Amp/Amps, these are things that should be checked or adjusted by a qualified technician, especially the High Voltage Screen Adjustment, hope this helps.

Posted on Apr 23, 2007

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Your set may need to have a screen control adjustment. This adjustment is on the high voltage transformer and the back cover will have to be removed a access it. I'm assuming that your set has a picture tube in it- not a plasma or LCD display. If this is the case you can remove the back cover and adjust this control while observing the picture being shown. If you adjust it too high you'll get retrace lines (fine lines going accross the screen). If you're not comfortable doing this or inexperienced, you might want to get a technician to adjust it for you. There are dangerous voltages inside! Stargazer

Apr 15, 2007 | Zenith H36F46DT 36" TV

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