My old Raleigh mountain bike needs new shifters. This is the 2nd set (of shimano thumb shifters) that seems to have stripped internally or something.
Last time I took it to a bike shop and the entire bill was rather pricey. Is this something I can replace easily myself? I am mechanically inclined. Or any chance i can fix the old ones?
I was having this problem on the front derailleur shifter on my old mountain bike when I was riding through a bunch of snow and slush.
Turns out, it was not the shifter but the derailleur, which was just gunked up and resisting movement.
If it was me, I'd clean your derailleurs, put Tri Flow or some other type of light lubricant in the pivots, and if things still aren't working, replace the cables and housings before I replaced the shifters.
A good shop should be willing to walk you through this, but there's always Youtube.