Toshiba 43H70 No Audio after Service Mode

[timster]

I was adjusting some of the service mode settings using the service manual and all of the sudden there was no internal audio. The set recognizes signals such as those off air but will not play the sound through the speakers. These are on using the TV's menu. I am using an external amplifier to hear the sound now but would like to restore the internal audio. According to the service, while in the service mode, you can press "8" on the remote control to test the audio signal(On/Off). Any help will be appreciated.

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press mute on control and press mute with menu at tv for some minit it will assecc