All faders are the same part# so you could pull one from another channel for a temporary fix til you get a new one.
Ron,
Had a look and #701M-10KDX2 on my stereo fader in the stereo input channels.
Looks like you need two "new" ones. Stereo fader will work if wired correctly,maybe bad connection/solder joint
duct tape came loose.
Keep us posted
Gary
Ron,
I believe the faders are ALPS K series so pretty easy to find.
Gary