Bad sound-garbled and goes off on certain channels.
I bought a Sansui dtv2798 27" and some of the stations -channels have static and the sound goes off. Usually when I change from channel 151, for instance, to 154 tha sound comes back. The words are partial and garbled sometimes.
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Main system control memory IC fault. Contact any service technician to replace it. If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
Type in the brand name of your device, in the search box [at the top right] of the display window and the Search will start at once as you type in, and will show you all the related posts. It will make surf easy.
Not the tv problems,this problems are the tv stations channels broadcasting tv stations,it is the problems of the tv stations.Some tv broadcasting stations channels are roaring sound some are normal or smaller.Just use the tv volume control + - adjust the tv suomd that all.
The problem is most likely your SAP being turned On.
SAP was created for audio programing including translations into a 2nd language. On nearly all sets, the SAP being ON will essentially select an alternate audio stream and will de-select or mute the main audio from the channel your are viewing. However not all TV stations have SAP enabled.
I am the Chief Engineer of a TV station in Denver, CO. We are not using SAP so if you selected SAP while watching my station you would get noise or static. There would not be any audio there.
Go to the front panel of your TV and select the "MENU" function. Step through the menus to Audio features and De-select SAP or Enable your main audio and this should take care of the problem. Alternatively you might be able to unplug your set for a period of time and it would reset itself. I used to get calls from elderly viewers when the set wouldn't pick up the UHF TV stations anymore. These were always after a power failure and the set had defualted to factory settings,
Different set manufacturers use different menu schemes and withou a password feature, these menus are so simple a small child playing with those fascinating buttons can change them for you to something you really don't want.
Good luck and write back if you can't find it. The set manufacturer and model number would help me look up a menu tree for your TV set.
if theres a headphone jack plug in a set og headsets. if the sound is there then you know that your speaker is bad. if its not make sure the volume indicator goes up and listen closely to the speaker. Do you here static noises?? NO? ok then its a problem with the audio output IC built in to the set and this is probably something you cant repalce unless your experenced with soldering printed curcuit boards. If you here staic or a small his then the volume contrpl curcuit or the audio if is defective and this as well is not something you can diagnoise unless you know how to troubleshoot electronics. Good Luck