repair - What is the black stuff on the PCB below remote control buttons? - Electrical Engineering Stack Exchange
Mini DIY: Repair faulty buttons of your remote control in 15 minutes!
Repair Your Remote Control With Electric Paint – Bare Conductive
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DISH/Bell/Telus UHF Pro Remote Control Button Repair Pad
Remote control button presses not working - solved. - YouTube
How to Repair a Remote Control: 4 Easy-to-Follow Fixes
How to Repair a Remote Control: 4 Easy-to-Follow Fixes
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Remote control CB beyond repair? I cleaned all with contact cleaner, no difference: some buttons work, others do not. Worth trying conductive paint on black contacts under the buttons? The closeup shows