I don't think the service manual for the 26/30HF84 is available yet.
The 26HF84 doesn't have a menu button on the set. So the old "Mute/Mute/Mute(hold) - menu button" trick doesn't work.
Try holding the down-volume button on the set down and then press and hold the '9' on the remote control for a second or two. That should do the trick. Be sure you know what you are doing before modifying any of the settings!
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