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High pitch humming sound when tv is off.

We just bought our Proscan TV about 4 weeks ago. When we turn off our proscan flat scree tv, it has a high pitch humming sound. How do we get rid of this sound?

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Better not to interfere with it as it should be under warranty if you have just bought it Either retun it to the store or have their service tech come out and look at it. These units are High tension power and are dangerous to try and fix yourself if you dont know what you are doing

Posted on Jul 31, 2009

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Volume making humming noise when on


there is a bad ground.
the hum you are hearing is ac getting into the audio.check all the rca plugs on the set are plugged in all the way.do not run them close to a power bar either.
sometimes a second unit with it's own volume is hooked up to the tv and then the tv volume is up too high because the other box is turned down.if there is a unit hooked up,turn it's volume up ,and the volume on the tv down,otherwise the tv will amplify the residual noise.cheers,ed

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Proscan 40' 40LC45S has a high pitched hum when it is off. Sound goes away when TV is on.


Same problem here, there is a high-pitched sound in standby. As soon as the light turns blue and the TV is on it's gone. I actually exchanged this TV three times at Best Buy but all the models made the same buzz in standby. I was told that it's normal and in the store you can't hear it since there is too much humming from other TVs around. The power is transformed down to a minimum, just for the remote controls, internal clock etc. and this causes the buzz, like when you dim your lights at home. I hooked it up to a surge-protector for clean power and just switch it off over night. During the day it's hard to hear anyway. - Again, since this is my third (!) Proscan 40' exchange I can definitely say that this is normal for this model. I was just surprised that nobody mentioned the same problem so far on the Best Buy reviews.

Jun 10, 2009 | Proscan 42LA30H 42 in. LCD Television

3 Answers

My proscan is buzzing and pix is flickering when the power is on.


I found this solution on another review, hope it works
Model Number: Proscan 26" LCD HDTV w/ Built-in DVD Player26LB30QD "pro: good price, TV picture is clear and DVD player is compatible well.
con: sound noise
There was hum when I first turned the TV on, then I followed these instructions (found it from other review) to fix the hum issue:
1. Turn tv on
2. Input mode should be tv
3. Turn volume to zero
4. With remote enter 9 8 7 6
5. A menu will appear on left side
6. Arrow down to backlight and with right arrow key move number from 81 to 83, press menu button twice,
7. Turn up volume and listen if hum is gone."
It works,no hum."

Feb 26, 2009 | Proscan 42LA30H 42 in. LCD Television

1 Answer

Poor sound quality


Hi, I sent an email regarding the issue to OnCorpus (the company who makes ProScan)

This is what I got back:

---------------------------
Thomas,
Follow these steps to correct humming issue:
1. Turn tv on
2. Input mode should be tv
3. Turn volume to zero
4. With remote enter 9 8 7 6
5. A menu will appear on left side
6. Arrow down to backlight and with right arrow key move number from 81 to 83, press menu button twice,
7. Turn up volume and listen if hum is gone.

John
jd@oncorpus.com
---------------------------

I can't confirm if this works at this moment since I don't have access to my TV.

Thomas

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11 Answers

Proscan Tv is humming


This made my humming sound go away completely;


From JD at oncorpus.com [manufacturer of the 32LB30Q]


Please follow these instructions, should fix the hum issue:

1. Turn tv on
2. Input mode should be tv
3. Turn volume to zero
4. With remote enter 9 8 7 6
5. A menu will appear on left side
6. Arrow down to backlight and with right arrow key move number from 81 to 83, press menu button twice,
7. Turn up volume and listen if hum is gone.

John

Dec 15, 2008 | Proscan 32LA30Q Television

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