| Electronics > Repair |
| best method to restore conductive keypads? |
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| DarkAngel:
. FAILURE IS THAT IN MANY REMOTES, OVER TIME THE CONDUCTIVE RUBBER MATERIAL UNDER THE KEYPAD BUTTON, ALWAYS TURNS INTO MIX OF CLEAR "GOOP" AND BLACK CARBON MATERIAL. One must "mash down" very hard and slide the button around with your finger to make a connection...which is unreliable. I've seen the degradation of the switch take anywhere from less than 1 year to over 10 years, depending on the brand. I have to replace my Cox remote every few years because of this repeating failure. The "rubber" keypad failures I run into are that over time the buttons degrade in some way and create some sort of clear GOOP on the entire contact interface consisting of the conductive rubber pad and the metal "interlocked fingers" kind of pattern on a metal side of the PCB board. I can usually clean off the "goop" and it MAY work again for some time, but this method usually also removes quite a lot of the black (assumed carbon) material that had been partially disolved and mixed into the "grown" goop, so this repair can't be performed more than a few times before there's ZERO carbon left to form any electrical connection. Is there a repair kit for this specific type of remote's keypad button's failure? |
| BILLPOD:
Good Morning DarkAngel, What works best for me, is the conductive paint. I clean the rubber contacts and the corresponding traces on the PCB with IPA and then dab some of the paint on the rubber pads. This paint is super fast drying and by the time I reassemble the remote it's ready to go. ^-^ |
| TERRA Operative:
You can buy kits of conductive pads from ebay/aliexpress/etc. https://www.ebay.com/sch/i.html?_nkw=conductive+pad+keypad+repair+kit |
| Dave Wise:
My old stereo remote slowly became unusable. Pen-applied nickel worked at first but quickly flaked off. Then I cut little disks of brass foil and attached them to the rubber pads with contact cement. I only did worn out pads like Mute, Volume+, Volume-, Power. Couple months of heavy use and still fine. |
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