I'm hoping to get some input from those who have experience with RSX components while I search for answers...
I'm tuning a friend's mid-1990s Trek 1220 road bike. It had been hanging in her garage for greater than a decade and she wanted to get it road worthy again. It's in beautiful shape aside from a rusted chain and needing new brake pads and tires. Everything so far has been straight forward but the brifters are giving me some issues. Effectively, there is no shifting. I thought it may be a cable issue but I disassembled, cleaned and lubed the housings and cables. Still no joy. Even with the derailleur cable removed, I hear no clicks or releases of any index shifting in any direction (up or down). It is the same for both shifters.
I'm wondering 2 things:
1. There is something busted internally on the shifters and that is why it ended up on the wall for 10 years. This seems unlikely considering the behavior on both sides is similar.
2. I've noticed any lube on this bike is badly oxidized (almost like glue). Maybe they need a hardcore degreasing in hot water?
I'm also wondering if there are any know issues or behaviors Shimano RSX are known for, which mostly the point of my post?
Thanks for any help!