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A common cause are failure of decopling capacitors in the audio section, and or the circuit board power distribution that feeds the audio board. Most of the capacitors are surface mount components. The standard fix is to start by changing the circuit boards that have the defective parts.
If the set is under warranty, call for warranty service. Out of warranty service is expensive for these TV sets.
This tv unit have a colors wheel design into it.This tv problems,having loud squeling,buzzing noises or colors pictures are flashes black&white with the pictures.The tv colors wheel it is worn out and it is dying.The tv have a loud buzzing noises because the tv colors wheel it is worn out and warping out of it axis and it is spinning and hitting it steal frame box.The tv colors wheel sit way back of the tv behind many mechanical parts.Have no experience in mechanical works like take things aparts and putting it back again.Hire a tv tech. to change the colors wheel.
This is likley a problem with the monitor's signal cable. Try moving the cable around steadily and see if the color suddenly goes back to normal or changes to a yellow hue. If this is the case and you are able to remove both ends of the cable then a replacement can easily be purchased from a local computer store or online. (Try www.amazon.com or www.monoprice.com).
Loud sound would be coming from defective color wheel that is mounted i light engine, next to lamp housing. Replacement of color wheel is required expertise/ experience and professional will do that for you in correct and in safe manner. Contact local tv repair shop to get color wheel replaced in tv. Thanks.
This DLP tv have a colors wheel,it worn out and it spinning off of it axes motor.U have no colors.U hear grinding and loud buzzing sound or loud squizling.All this indicate colors is defective,and must change.Hire a tv repairman for this job.Because u have no machanicals,don't atemp this by buy the colors wheel,tries it to do this and replaced it ur self.Must take out many machanical's parts,even get to the colors wheel to rreplaced.Many people though is was easy they tries it and have problems or fail,than cause some else in the tv to go wrong.End up costing them more $$.And the Tv Tech. don't like fixing people mistakes and blunders.
yes. A good idea. Kill power to the sub, then unplug and remove everything from the sub. go ahead and plug it in again and check for buzzzz.
That is test one. if you have buzz still, its the sub assembly. bad luck, but not impossible. If the buzz is gone its one of the signals to the sub. They can produce a buzzz without any signal coming from your stereo equipment. Replace the feed line, enjoy! BTW...Kef sure does sound clean. good choice.
Yes, I'd say your cable is faulty. If it is the type you can disconnect, then change it. If it is moulded to the monitor then you might have a problem. check all of the pins on the connector to make sure they are in tact and not bent.
if you have access to another monitor use if to verify the monitor is the problem and not the video card of the computer.
does the monitor allow you to adjust color and tint(hue) because the tint or hue control changes the overall color from green to purple. or the color control circuit has failed leaving you stuc with a purple screen.