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Sound from monitor speakers distorted and high-pitched

The audio from my Polyview LCD monitor is distorted. Everything comes out high-pitched. I don't know if this is a problem with the speakers in the monitor, my computer, or if some weird setting got switched on somehow.

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Sounds like an inverter problem. If the power supply is internal replace the capacitors coming out of the voltage regulators. These are usually 1000mf and/or 470mf. If that doesn't do the trick look up the numbers on the 8-pin chips that drive the secondary transformers on the inverter to see if they are getting the right voltages.
Good Luck!

Posted on Feb 20, 2008

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Posted on Jan 02, 2017

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My GEM GL-1821A Computer monitor has a high pitch squeak that is intermittent in occurrence but sometimes continues for long periods of time. Got any ideas?


A high-pitch squeal is common in CRT TV sets and monitors. I've never run across this in an LCD monitor, but there's a first time for everything. If the sound isn't coming through built-in speakers (if this model has them) and is being caused by the computer, I would suspect the inverter circuitry. This provides power for the backlight, and there are transformers that may have become noisy. Because of their construction, it's possible for them to vibrate internally, and at a frequency that you hear as the high-pitched noise. There isn't a lot you can do to quiet them. When I worked on TV sets, I had mixed success using hot-melt glue to muffle the noise, but usually the only way to completely cure the problem was to replace the parts. It's unlikely you'll find the parts available for a monitor, so all I can suggest is to bear with the noise as long as the monitor is otherwise working properly. Or use this as an excuse to buy a new LCD monitor; they are quite reasonably priced these days.

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Does it have a builtin microphone


Yes this monitor has a built in speaker on it, here is the complete details about this monitor.<br /><a href="http://www.newegg.com/Product/Product.aspx?Item=N82E16824024506&amp;SortField=0&amp;SummaryType=0&amp;PageSize=10&amp;SelectedRating=-1&amp;VideoOnlyMark=False&amp;IsFeedbackTab=true#scrollFullInfo">http://www.newegg.com/Product/Product.aspx?Item=N82E16824024506&amp;SortField=0&amp;SummaryType=0&amp;PageSize=10&amp;SelectedRating=-1&amp;VideoOnlyMark=False&amp;IsFeedbackTab=true#scrollFullInfo</a><br /><br />

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No sound monitor speakers


hmm the monitor is connecting to the pc sound card ...and for that you have to have a sound driver installed...if you know what kinda pc you have its easy ..but if its a built one ..you gonna either look inside to see what is the sound card name ...or try to see if you have a previous sound driver installation .....if you did had sound or still have on the ear pieces you have to have on the monitor too..just see the volume ...and the cable connection ..if it has a separate one (3.2 jack )or it connects directly with a HD cable

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1 Answer

Built in speakers


I'd guess there is a jack socket 'audio in' somewhere on the montitor, probably on the back. (Don't confuse it with the headphone socket, which usually looks the same.) Connect it with a 3,5" stereo jack-jack cable to your PC's audio output.

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I have acer al1917w A monitor but no sound


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G'day Matt,
No microphone. It has a line in socket to drive the stereo speakers.
cheers,
dave.

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1 Answer

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1 Answer

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if your monitor has speakers, and it should  built in; then you will see a separate lead with  green plug on the end of it which is to be located in the rear of your pc with the green marked socket.

 

If theres no lead, then there must be a connector on the rear of the monitor

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Hi
The sound on my computer is distorted and it sounds like a echo and cant understand what ppl are saying to me. Can you please help me

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