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Buzzing sound on light backgrounds on monitor

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Why does my lcd screen show lines and buzz on startup?


Try it on a different computer. If it works, your motherboard may have problems. If it doesn't work, try another data cable.

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Buzzing nois of this kind can come from a short or from disturbance.

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On my Dell E193fpc monitor, the background lighting goes off after a few seconds. The actual Screen-image is still there (can be seen in bright sunlight). How can I get the backlighting to work proper


This sounds as though there might be a problem with the inverter (this is a component that supplies a high voltage for a tube(s) that illuminate the screen.

As there are high voltages on inverters, this is really a job for a repair shop.

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Background buzz through speaker dock


Hi
You have posted this in the "Mac Laptops" category?
Well it is very difficult to say where the buzz comes from. It sounds like a hum from your mains. It might be a transformer close to your amplifier or it might be plugging in to two different circuits from your fuse box - ie using a plug from a neighbouring room. Also fluorescent lights can give a buzz that affects sound systems.

Hope this helps

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When the monitor is turned on the screen goes on but there is a buzzing noise coming from the power supply board, then after 3 seconds the monitor goes black but the green power light is still on and the...


Sounds like the common Bad Capacitor story! If your monitor is not under warranty and you have any soldering skills this is only a 10 dollar fix. There are dozens of tutorials on youtube that will walk you through this. Search "Monitor capacitor replacement".

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My acer monitor displays the acer background, makes a noise like a buzzing sound and goes black, and then after all my settings and background picture and information are complete and up, the monitar...


It sounds like a backlight or inverter problem. You can verify this by using a bright light to shine on the screen surface. If you can see the picture (but it will be very dark) that means that the backlight which illuminates the screen from behind. You would have to replace the inverter to test it, but there is good news: These are pretty difficult to find parts for, and not an easy repair for an amateur; acer products usually have a 3 year warranty on the backlight/inverter system, so I would start there.

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Samsung P237HD tv/monitor,unit buzzing when on.


I would take it back unless you have time to investigate the problem before the return policy expires.

If the sound is coming from the speakers then it is interference and would likely happen with another TV.

The interference type can be electromagnetic or radio frequency, both of which can be defeated.
Start with plugging it into a different outlet. If that doesn't work, then unplug anything from it one device at a time to see which thing is the culprit. If it is one of the devices, move any audio cords away from power cords and/or position the device further from the television.
Household appliances and fluorescent lighting also can cause signal interference in electronics that is audible.
A device known to help with such interference are power line conditioners from such brands as Tripp lite, and ferrite clamps. You can place ferrite clamps on the power cords of your devices and their analog audio connectors.

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Sounds like feedback. Check your speaker connections at the speaker and the main unit.

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Do you picture and sound normally in the background?

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