Dim Clock LCD on Jenn-Air wall oven

[KeithMcC]

This is a Whirlpool

The LED display is OK, but the beeper has been getting weaker for months. Recently the up arrow button (by the beeper) stopped working (and beeping), and a few days later the oven light and clock buttons (down arrow still working).

Of course I don't know if the beeper and button issues are related.

There are three 220Ufx35V and two 1000Ufx6.3V. The 220s measured OK capacitance in-circuit. The 1000s didn't, but one measured OK out of circuit (replaced it from my junk box - didn't help).

Does this sound like a capacitor issue? (I know I should just replace them all, but I will have to have them shipped.)