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How to clean the keypad terminal of motorola L7

How to disassemble to clean the keypad terminal

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Wont read the remote

Hi, I may have the answer, it sounds like the remote may be broke. They are expensive if I'm not mistaken so repairing it is my advice. there are only 4 parts to them, the upper and lower halves of the case, the keypad, and the circuit board. The 2 to 3 things that can go wrong with a remote are the battery terminal/s being corroded due to a leaked battery, the keypad has contamination on the backside where it contacts the circuit board and-in some remotes-a " ceramic filter " a kind of "chicklet" looking component on the circuit board that can actually break apart on the inside if the remote is dropped just right or too often( this can be determined by removing batteries and tapping or shaking remote-if you hear a small rattle this may be culprit-although disassembly has been required to tap the ceramic filter itself to hear the rattle) . Repairing the batteries terminal is as easy as it sounds-just look for a greenish or whitish foreign substance on the springs/contacts-and clean off enough to reestablish a good connection with the battery( rule of thumb-if there is metal showing on the contacts where the battery touches, they're clean enough). repairing the keypad if dirty is a little harder, just because it involves disassembling remote,remove screws ( maybe located inside of battery compartment ) gently pry open case ( may involve working around the edge between the two halves for a ways to get it to split) remove circuit board, clean the little dots behind each button with some rubbing alcohol-clean the little maze like looking gold colored paths on circuit board the same way. To fix a broken ceramic filter you'll actually need to find an orphaned remote control that you can cannibalize for its ceramic ceramic filter. just unsolder old one-solder in new one. Sorry for the short story sized solution, trying to be thorough for you. I hope this was useful, please comment back to let us know and thanks for choosing FixYa, good luck-Prodzilla

Apr 24, 2011 | Bose Wave music system Multi-CD Changer...

1 Answer

When push s, E71 give ad5#

Turn off phone, remove battery and sim card, thoroughly dry with cool air from vent register (could take a couple days). If problem persists, disassemble to keypad, dry and clean keypad. If still not working you may need a firmware update.

Feb 20, 2011 | Nokia E71 Smartphone

1 Answer

N 81 is 1234567890*# is not working plise give me a solushion

Well, 2 things, there is a lock keypad slider on the side of the phone, once you slide this even if you restart the phone, the keypad still wont work, try sliding this into the unlock position, if this does not work...well best bet is that the connector cable for the keypad is dislodged, broken or the contacts on it need to be cleaned, whatever the case, you will need to carefully disassemble the phone and unplug everything, clean with rubbing alcohol, reassemble and it should work, Hope this helps

Oct 29, 2010 | Nokia N81

1 Answer

Hi. i have N-72 mobile but its keypad lights are off.... how can i turn them on....????

You will need to disassemble your phone and clean the contacts for your keypad light.

Mar 01, 2010 | Nokia N72 Cellular Phone

1 Answer

1600 nokia phone insert sim problem

At the bottom of the phone you have the headset, charging and easy flash (USB) connectors. If the easy flash (USB) connector is soiled, oxidized, dirty or the terminals are shorted; it can cause the sim card issue. The unit starts and takes long to display then "insert sim card" appears.
To resolve the issue:
  1. Clean the easy flash connector with a lacquer thinner or even a 70% ethyl alcohol.
  2. Make sure dirt is removed between the terminals.
  3. If you can disassemble the unit, clean the connectors terminals from inside.
  4. Clean also the board.
To disassemble the unit:
  1. Remove A and B-covers.
  2. Remove the six T6 screws.
  3. Pry the board including the LCD frame and light guide assembly from the sides to remove it from the D-cover.
  4. Reassemble in reverse order.

Nov 03, 2009 | Nokia 1600 Cellular Phone

1 Answer

Buttons sticking

hi.. i think you should open up your mobile and take the keypad out and clean it... if you are not able to clean it you can give it to mobile experts.. now a days many mobile owners open up their mobile by themselves.. open your mobile a the back first remove the battries and then open at the front and you can take the keypad out and clean..

Oct 21, 2008 | Symbol PDT 8146 Portable Terminal

2 Answers

Motorola razr keypad not working

Generally, the keypad does not need to be changed. Usually, one of the flex connectors in the flip (screen/camera) portion of the phone is loose, dirty and/or corroded (maybe from water, sweat, wear, trauma, etc). This is relatively easily fixed by a semi tech savy consumer. You will need a size T5 star driver (and possibly a T6) and a small screw driver, along with some rubbing (isopropyl) alcohol and some Q-tips.


For more information on servicing your phone, you should do an internte search for RAZR dissassembly,GGLJ:2006 -45,GGLJ:en&q=razr+v3+disassembly and you'll get lots of hits including videos like this:

When you have the top case dissassembled, the connector with the black patch on the top is likely loose. Clean the connections thoroughly with alcohol and a Q-Tip and reassemble. If it doesn't work, or only works partially, another cleaning may help (I had to go in twice).

Jun 24, 2008 | Motorola Mobility RAZR V3xx Cellular Phone

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