5 tips - troubleshooting an aircon unit that won't respond to the remote control

The remote control for our LG Aircon unit wasn't working (LSR120H-2). This video was the steps I took to find out what the problem was and get it working again.


WARNING: Don't try to open an aircon unit if you are not comfortable with the steps you need to take to remain safe around the electrics inside. Touching the wrong wires can kill.

Turn off the electricity supply to any device before opening the case.

I ordered the spare part from: https://spares.bigwarehouse.com.au/pr...
The listing mentioned this as:
LG LSR120H-2 DISPLAY PCB ASSEMBLY
Part Number: 698783
Appliance: LG Air Conditioner LSR120H-2
Description: PWB(PCB) ASSEMBLY DISPLAY LS-R1260RL 6870A90065C
Part cost including delivery/insurance/GST was $84.96 AUD

The bag that arrived had two numbers on it:
6871A20194B
Desc: PCB Assembly.Display
Spec: LS-T1860HL 6870A90065C