Infrared Remote Control Cleaning

crwdns2936071:01crwdne2936071:0 — Functionality test

Remote controls use an infrared LED in the front. Sometimes it can be seen behind some kind of "window", which is why users point the remote at a device for it to work. It can be tested using the corresponding device, but it is always convenient to know additional forms of testing:

crwdns2936071:02crwdne2936071:0 — Disassembling the Remote

To disassemble the remote, look for the screw to remove the cover in the battery compartment, as shown in the image.

crwdns2936071:03crwdne2936071:0 — Lid and Rubber Keypad Cleaning

The first photo shows how much dirt and debris accumulated under the cover and on top of the flexible, grey keypad.

crwdns2936071:04crwdne2936071:0 — Cleaning the Printed Circuit

The black tracks of the circuitboard will accumulate grease and dirt, specifically on the black screen-printed tracks that form the opposing combs that come into contact with the black part of the keys when pressed.

crwdns2936071:05crwdne2936071:0 — Assembly and testing

In the picture you can see how clean now is both the PCB and the switches.