Hi @ martyhoh,
You don't state the model number of your TV but have you tried operating/releasing the Volume Up button on the TV itself (if it has one) to see if this clears the volume level indicator.
It may be a faulty Volume Up button that is the cause of the problem.
If this doesn't work, try disconnecting the power from the TV and then removing the back off the TV and disconnecting the button "board" cable from the mainboard. Then reconnect the power to the TV and check if this prevents the problem from occurring.
Be careful when working in the back of the TV. Try not to touch anything that you shouldn’t and do not just pull the button board cable connector out. Inspect it to see how it releases from the connector on the mainboard. Also don’t pull it by the wires as you may pull them out of the connector (if it is a connector type arrangement). pull it by the plug instead. You don’t want to cause more problems. ;-)
If the button board is the cause of the problem, you still should be able to use the remote control to control the TV, until you get a replacement button board