Question about Universal Remote MX900 PC-Programmable IR&IF-Handheld Remote 418MHZ

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Buttons barely work

How do you clean the contacts?

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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.
One among the posts have details about how to check and clean a remote control.

Posted on Apr 22, 2014


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Posted on Jan 02, 2017


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My remote only turns tv on and off nothing else. TV model D40-D1

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.

Jan 03, 2018 | Televison & Video

1 Answer

Panasonic tv remote codes

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.

Nov 24, 2013 | Televison & Video

1 Answer

Buttons light up but when pressing buttons to start...nothing. would there be a battery that needs replacing?

1) replace batteries under the display board, clean the contacts with contacts cleaner.
2) adjust the REED switch, clean it and tight the wires connector.
3) tight the ribbon cable from keypads, clean it, tight the wires connector from display board vs lower board.
God bless you

Jul 20, 2012 | Proform Sport 1000 Folding Treadmill...

2 Answers

Hi! My name is Sharon and I have a 2009 Saturn Aura. Recently I have discovered that one of my key fobs works intermittently and on the spare, even after replacing the battery, does not lock/unlock the...

Hi, the key fob has contacts on a circuit board, much like a remote control for a tv, or a calculator. These contacts are what the buttons touch, to make it work. the buttons, or contacts may be dirty, with a carbon film on them causing the two buttons not to work, leaving only 1 functional. If you take it apart, much like putting a new battery in, you can actually pop out the green circuit board, and see the contacts. These can be cleaned with a pencil eraser. Try cleaning the contacts, and the back side of the buttons. A re program is not in order, because you have 1 function, and will either work as a whole, or none at all. If cleaning does not work, You may need a new fob. Good luck...coop442000

Sep 25, 2010 | 2009 Saturn Aura

1 Answer

1988 Mercedes 300E. None of my power windows work suddenly. Is there another fuse not in the main fuse box? Curiously, the power seats mysteriously stopped working as well but then worked fine when left...

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

Sep 11, 2010 | 1988 Mercedes-Benz 300

1 Answer

MY Yamaha psr 550 stopped giving sound after cleaning its buttons inside but the beats and other parts are working properly.only the keys are not giving out sound.please tell me how to fix this...

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.

Jul 15, 2010 | Yamaha Music

1 Answer

KS4102: Remote volume buttons won't work . Button is stuck down for the "lower volume" so I am only able to use "high volume" which is too loud for comfortable listening. Do I need replacement remote, and...

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.

I hope you can get it fixed...


3rq8 (Triarcuate)

Sep 13, 2009 | Televison & Video

1 Answer

Buttons stopped working

The contacts on the faceplate or radio are dirty. Remove the faceplate and thoroughly clean the copper contacts with wet Q-tips in alcohol. Also clean the ones on the radio.

May 24, 2009 | Pioneer DEH-P6600 CD Player

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