Question about Coby KTF-DVD1070

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Coby buzzing sound in speakers when TV off

Even when we unplug it???

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Check its audio output circuit for damaged component/s, provided, iv video is OK.

Posted on Jul 22, 2013

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I have a Dell W3706MH tv monitor and the sound just stop working. I unplugged the speakers and plugged them back in still no sound. I unplugged them because it was making a loud buzzing and popping noise...


If possible, plug the speakers into a portable device such as a cell phone, portable cd player or a tv that is equipped with a headphone jack (if speakers have the jack). If not, if the speakers have the red and white, ref and black or black and white male end connectors, plug them into a tv or dvd\blue ray player. If you get sound they are good, and you need to adjust your sound options on your computer. Let me know if this helps\works. Also, not all speakers are compatible with all computers and must have the same sound level equivalence to the device they are being used with. i.e. Ohms etc.

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unfortunately the coby company has gone out of business probably because they have produced an inferior product that has had many problems, many people are posting problems with these sets. it is better you just purchase a different brand of tv and leave this heartache causing product behind

Apr 05, 2014 | Coby Televison & Video

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My Coby 15" does not sound on the speakers and


Thanks forp urchasing my support,

upon examination of your issues these coby Tv's had bad digi board in them, A digi board is a board the controls the signal to your screen and speakers. This is a combined board and is ajacent to the power board. what needs to be done is this board needs a totoal switch out. Now for a work around on this you can hook a set of speakers to a cable box or purchase a home theater system for under $100 bucks. Whlist this workaround will never fix the tv it will provide sound until such time you can fix the tv or purchase a new tv in the future. you can purchase the part on www.partstore.com or www.shopjimy.com even www.lcdrepair.com there is also allot of people who fix tv's that put out youtube videos. you may want to check that out if you do not know how to fixo n your own.
Thanks again for your purchase and do wish you best of luck to you.

Oct 13, 2011 | Coby TFDVD1571 15 in. LCD Television

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Trying to hook up coby DVD938 to tv. would like to use it for sound to hear tv through speakers even when not playing a DVD. How do I hook it up that way......


Take the red, yellow and white cord and plug it into the back of your cable box and then run it to you tv and then push the Source button on your remote on the Coby until the display says "Line" and there you have it

Sep 05, 2010 | Coby DVD938 Theater System

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I HAVE A BEAUTIFUL COBY TV (TFTV3225). PICTURE IS BEAUTIFUL-SOUND IS AWFUL (SOUNDS FLAT, CANNED, NO STEREO OR SURROUND SOUND EFFECT.) PLEASE ADVISE BEFORE I RETURN THIS BRAND NEW TV.


Howdy, If you want good sound from a Coby TV you need external speakers. Coby is one of the lowest end producers of televisions and are notorious for poor sound. Good news is that for what you saved by buying a coby, you are still ahead after buying external speakers and amp (often called home theater system, some have built in DVD player). That's the scoop on Coby. hope this helps some.
Regards, Farmerbear

Aug 31, 2010 | Televison & Video

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I have a older sanyo ds19390 tv that is buzzing inside, not thru speakers please help


In older tvs the buzzing sound usualy comes from the HT lead plugged into the tube .open the back and switch the tv on (do not touch anyware near the set the HT lead carries avery high voltage even when the set is off)if u do see arching then u need to clean around the rubber of the ht lead )u can leave the set unplugged for a couple of days to allow the tube to discharge before attempting to clean around it.

Apr 13, 2010 | Televison & Video

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I tryed to connect coby speaker (model number - csp42) up to my olevia 337-b11 tv and i can only hear sound through the bulit in speakers in the front of the tv and not out of the coby speaker! the coby...


Does your TV have an Audio out? This is the only way that you can get signal to feed to your coby speakers and make sure that your coby speakers has an amplifier.

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have someone check speaker ground to the TV chassis. Your speakers are picking up reverb from the Video Signal.

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Is the buzzing coming from the back of the TV, staying loud even when the volume is turned all the way down, or is it coming from the speakers?

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