The command paths can differ
NVIDIA documents infrared volume as requiring the remote to point at the TV or receiver. SHIELD navigation can remain responsive while that separate volume command is blocked or aimed elsewhere.
Identify the selected volume-control method before testing. An IR path needs a reachable sensor; HDMI-CEC depends on compatible enabled equipment and uses a different route.
Compare the normal seat and a clear position
Test the target equipment with its original remote, then compare SHIELD volume from a clear pointing position. Keep the intended device’s input and volume state fixed. A cabinet door or soundbar placement can affect the sensor path.
If the clear comparison works, inspect the room arrangement before pairing the SHIELD remote again. A navigation pairing procedure cannot remove an infrared obstruction.
Check the actual target
Volume commands configured for TV speakers may not serve a receiver-driven system. Confirm which device should become louder and test up, down and mute separately.
A useful report states the control method, target and position comparison. It avoids turning one missing command into a claim that the whole remote or player has failed.
Questions answered
Will re-pairing necessarily fix blocked infrared?
No. Check the selected method and physical sensor path.
Sources & further reading
Official references for the subjects discussed. Service terms and device software can change.