|Description of Fault
|Pedal(s) dropped down
||Webbing strap or a broken return spring
|Pumping has little or no effect
||Non return valves rotted or bellows split
|Bellows soon runs out of air if you stop pumping
||Holes in bellows, or severe woodworm in the instrument.
|The stops don't seem to do anything*
||Broken springs on the reed 'mute bars' which would normally shut stops off when pushed in.
|Weak tone (lack of pressure/ vacuum)
||Faulty or broken bellows springs
|Key stays down (note sounds continuously)
||Key has been struck too hard, so pallet valve is now stuck open.
|Certain notes are silent, or sound unusual
||Typically dirt stuck in reeds, or a bent reed tongue due to fatigued metal.