I'm having a problem with a GE tv model # 27gt613. When first plugged in the audio for the tv is loud and the indicator on the screen is at full. You can turn the volume down but cannot go back the a higher volume until screen volume indicator changes. The indicator stays on high and does not change for several minutes, then goes to normal. If tv is turned off and turned back on, it works fine. It's only when tv has been unplugged that this happens. Have checked solder joints in the turner section. Any help or ideas would be appreciated.