Question about Philips Magnavox 27MS343S 27" TV

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Big black box at top of screen

The veritical adjustment is messed up and there are no controls to adjust for it. There is a big black box all the way across the top of the screen and it cuts off the heads of people who are standing up.

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Re: big black box at top of screen

If you mean that a black box appears on the screen, and you can still see the picture around the box, it means that your closed captions are on and set to TEXT. If this is the case, enter the menu, navigate to the closed captions page and set the captions to OFF. If you mean that the top of the picture has collapsed down, the vertical circuit has stopped working correctly and the set should be serviced by a qualified tech.

Posted on Sep 15, 2007

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i dont know this exact model, but i can advice you based on a slightly diffrent model. i hope the solution will be valid for your model as well: TV is digital controlled and have to be adjusted via service menu except the external focus and screen on back of (flyback) high voltage transformer. This is one you can try: Need plastic allen or plastic small flat blade screwdriver to fit these. Focus is top, bottom is the screen that set the overall brightness. Before adjusting, go in menu: press menu once, select picture quality, I think number 4, press 2 for "preset..", press 2 again to select normal. Back out by pressing zero repeatedly. It may ask you to save new settings, select yes. If screen is adjusted too bright, picture look lousy (washed out) the blacks will light up (becomes grey, or visible lines) this means you have actual fault that prevents you to get decent pix, that when it is time to take it in for repair.

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