The Tv was working fine the Volume was fine then one day I turned the tv on and the volume just began to slowly go down by its self. I now have the menu up and its on the audio menu and the only way I can hear the TV is for the menu to be up . Once the menu is gone the volume goes with it. No clue what to do and the TV seems to other wise be in perfect condition. In need of help.,
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Check all your channels. If you are getting sound on some channels but not others it is a good possibility that your SAP setting is turned on. Simply go into your audio menu and disable the SAP. Not sure about your model tv but some Tv sets had a switch on the back to disable the speakers and some have a setting in the menu to disable the speakers. If you have a digital cable box hooked to the tv it is possible the cable box volume is turned all the way down which will override your tv volume. Check these options and hopefully one of them works for you.
Try to check the pannel and the remote "volume down" buttons - one of them could be stuck in a pressed position.
It usually happens on the remote when dirt or sticky substances accumulate around the rubber buttons - you need to disassemble the remote and clean the rubber pad and the remote housing with some ethyl alcohol and cottonwool, also clean well the holes on the housing where the buttons protrude.
If you also decide to clean the contact tabs on the rubber pad and the circuit board, you should clean them gently to avoid damaging the conductive coating.
Press the VOLUME UP and VOLUME DOWN buttons at the same time to clear this "demo mode." It's easy to get into it accidentally by hitting those buttons together, and then you don't know how it got there.
this is the same type of problem happening with other rca models and I know it is the EPROM CHIP but why this is failing is either because of design flaw , dirty enviroment that they were made in , to much voltage or current to the chip or too much of a draw from the chip causing it to fail . Or even a random frequency from the IR sensor or its circut I'm still investigating and testing.
leave the tv unplugged for at least 3 weeks durring this time resolder any solder that don't look good , I did this and it lasted for about 6 months(always plugged in to the wall) before it started doing it again. model # 27v412t
due to the long time the buttons were not used, they tend to get stuck and this causes channels eighter to stay in one station or continou scanning. it could be resolved by spraying WD40 on the buttons and press it many times then dry it before operating the unit.