It's an hassle to go to the appliances and just turn it on. so I have a solution for that would 90% work for your remote.
• Isopropyl Alcohol
• Any Cloth or Cotton
• 2x Fresh new Battery
• Replacement capacitor and Some Ir Led when it's busted.
• Something Flat to pry it like Flat Screw driver
• Soldering iron
• A Camera
• A Multimeter
Step 1: Test It!!
Try to check if it emits infrared light using your camera.
Infrared light is cant be seen by our naked eyes that why we need a camera.
you don't want to open it and found out it works right?
Step 2: Tear It Apart!!!!
Use your Flat screw
Step 3: Clean!!!!
use an isopropyl alcohol to clean the PCB and "Rubber Touch button"
Step 4: RE-FLOW ALLL!!!!
You know when electronics heat up and dry up the fux and drop it or It's just getting old like 6 or 7 years old, then you make a cold solder. you just disconnect the connection of it.
So you need to RE-FLOW the solders and add some fux.
Step 5: Check for Leakage of Capacitor or Look Inspect IR LED
Step 6: TEST IT IF IT WORKS!!
use your camera
Step 7: Close It Up!!
Step 8: CONGRATULATION IT WORKSSS!!!!!
TEST IT ALL THE BUTTON