Question about Samsung LN-S4692D 46 in. LCD HDTV

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I have a sumsung LA40M81BD lcd tv simple problem the tv is always clicking on and off and wont show anything on it. you have to switch it off from the switch on the wall.

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Good day!

you have a better chances if you have failing capacitors on the power supply board.

How can you find it?

Just look the actually image of it and see if it is look like leak or bulged on the top.
If you found replaced it with the same type,ratings and value.

Thank you and don't forget to rate my answer.

Posted on May 29, 2011


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Posted on Jan 02, 2017


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My phone on and show sumsung J2 but its stops there doesnt do anything and it cannot be switched until i take off the battery

Maybe just a glitch
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Ive connected my vga to vga cable from my desktop pc to the rgb pc input on my lcd tv but it shows no picture. it shows windows loading but wont show my password entry or desktop page

Because your laptop needs it's display setting changing so your second monitor is active.
While on your desktop, right click once and a box will appear, choose "properties" at the bottom.
There you will see another box, choose the "settings" tab at the top right and this will show your display options.
Right click on the number two box and "attach" it.
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Pc not working on tv

If you are using a vga cable to connect to the tv, then you need to make sure the tv source is switched to that source. You also need to make sure that your computer detects your tv. On windows, right click on your desktop and click screen resolution. You then need to click on detect. Your tv should show up here. You can also adjust how you wont to use your tv: mirror the desktop, extend the desktop, etc.

The same process is used for any cable (hdmi, etc.)

Does that answer your question?

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Samsung lcd tv is saying low or weak signal when trying to tune it in

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If it's been the subjest of a lightening strike chances are the saw tooth capacitor is opened and the main fuse. That's a cheap repair even at a good shop... At the very worst they can diagnose the problem for an estimate and that fee is generally worth the money even if that's not the entire problem.

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1 Answer

Grainy Picture Denon 1740 DVD and Samsung 1080P LA40M81BD

Firstly, you should alter the picture settings on the TV. Most TVs have independant settings for tuner, scart and HDMI, so you may need to do this several times. Once for each.

Excessive contrast and/or sharpness on an LCD causes graininess, particularly around the edges of moving objects.

Check and adjust the following on the TV:
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These settings are a % of maximum, so you may need to work out a value if max is not 100.

Also turn off any contrast enhancements - (Contrast + / Digital
Contrast etc.) dependant on make.

I assume that you are using the upscaling facility of the Denon 1740 via an HDMI lead. If so, disconnect any other connections between the DVD and TV, particularly scart. If the scart is connected the TV will auto-switch to the scart input when you use the DVD, and you will not get the benefit of the high def connection.

This is probably obvious, but make sure the DVD is set to 1080p scaling, and you will need to manually select the HDMI input on the TV.

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