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To clean it; you have to open the remote control, and take out the PCB out from it. If you wish to get some details; check the site linked here. Viewing it in "Mosaic" or "Magazine" will make surf easy Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/ One among the posts have details about how to check and clean a remote control.
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Clean them with electrical contact spray cleaner. Switch off, use the spray, work the buttons, spray again and leave a couple of hours to dry. If that doesn't work, you have to get underneath the buttons and clean the contact surface.
Don't use Water Displacement 40 and it has a wax residue after the kerosene evaporates.
Purchase some contact cleaner either online or at an electronics store. Remove the back from the watch and then drip the contact cleaner onto the contact side of the set buttons inside the watch. Then depress the set buttons repeatedly to work in the solution. You may have to repeat a few times. By cleaning the contacts it is likely the set buttons will work again.
you can test your remote by looking at the LED emitter end of it while you are pushing the buttons that are not working. Look at it through the camera of your smartphone. Unfortunately this will not work with an iPhone because of the IR filter in the lens. If you do not see a light when you push the buttons, some of these contacts can be cleaned by opening the remote and cleaning the buttons and contacts with a clean pencil eraser.
Open remote and clean the underside of the rubber buttons with alcohol. Also clean off the circuit board that contacts these rubber buttons. If that does not do the trick try rubbing a graphite pencil on the board contacts under the buttons that do not work. And if that does not do it, paint the bottom of the rubber buttons with conductive paint.
U can find the buttons that do not work by using an AM radio and setting the station to around the 600 area of the dial. Hit a remote button and listen to the beeping on the radio. You can increase the beeping by turning the channel selector for loudest sound. The buttons that do not work will result in no beeps.
check your buttons lift centerconsole look for bare wires cap or tape up. get buttons at junk yard or try to fix yours get goo gone open switches with small flat head clean springs and ball bearing. be gentle plastic insides break easy these switches break all the tim e go to junk yard and stock your pockets full
When cleaning buttons HOPEFULLY you did NOT use DeOxit or other contact cleaners like Blue Shower as these can damage the buttons that are conductive rubber.
The conductive rubber buttons should ONLY be cleaned with 99% isoprophyl alcohol and Q Tips. Both the conductive "pill" and the traces they contact on the circuit board should be gently cleaned with the Q Tip wetted with the alcohol.
If you used anything but the 99% isoprophyl alcohol, you can TRY cleaning properly and hopefully they will not have permanent damage.
You can disassemble and clean the remote, this might help.
Clean the rubber keypad with ethyl alcohol and cottonwool, also clean the contact tabs on the rubber keypad and on the circuit board (don't rub the contacts too hard when you clean them, you don't want to damage the conductive coating).
Also clean well the housing, especially the holes on the housing where the rubber buttons protrude.
The holes (and the rubber buttons) get dirty with use and this often causes the buttons to get stuck.
I had to "repair" several remotes with stuck buttons, and simple cleaning did the trick.
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