Micromax MM-2070 Mini HD remote is getting hot, it is likely due to an internal short circuit stuck button causing continuous power draw

Key features

• Compact, lightweight design for one-handed use
• IR connection (line-of-sight required)
• Standard navigation cluster: D-pad with OK/select, Back, Home, Menu
• Media playback keys: Play/Pause, Stop, Fast-forward, Rewind
• Numeric keypad for channel entry
• Volume and channel up/down buttons
• Power and input/source buttons
• Dedicated shortcut buttons depending on firmware (e.g., Apps, Settings)

2. Constant IR Signal Emission

A stuck button (e.g., volume down or channel up pressed inside the casing) forces the IR LED to emit continuously. That LED draws power and will get hot after a few minutes.

• Liquid Ingress: Spillage or high-humidity storage can introduce conductive fluids into the casing. This creates a "stuck" signal state where the remote believes a button is permanently pressed, causing the IR LED to fire continuously or the processor to remain in a high-power active state.
• Debris: Dust and conductive debris entering through the button seams can bridge power and ground traces.