Question about Samsung Sway SCH-U650 Cell Phone

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Phone keys intermittent.

How do I take the phone a part and clean the key contacts?

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2002 dodge dakota intermittant no start


Try lubricating your key with a small dose of PB Blaster...this can clean the contact points, and may last for a long time...when lubed insert the key in/out and turn in both directions.

Feb 04, 2013 | Dodge Dakota Cars & Trucks

1 Answer

Yamaha psr 550


When PSR550 keys stop working, or are intermittent, in any arrangement, this can be fixed (with work). There is probably TINY dust or debris which prevents a clean key contact from taking place; you must unscrew and open the PSR550 up like a ****, then unfasten the bottoms of the keyboard circuit boards. You can figure out how to move them without totally disconnecting them. You will observe how a tiny rubber-mounted contact presses against an interleaved circuit-board connection pattern to make contact when a keyboard key is pressed. Any dirt or crud on the contact area of the circuit board must be removed, because it will prevent the conductive contact from bridging the circuit cleanly and fully. I used 91% alcohol and QTips to clean all contact surfaces. It took me a couple of disassemble/assemble cycles to get all the keys clean and working, and the PSR550 back together. But first download the service manual: it will show you how to open it and access various components. You will see that the keyboard switches are much like calculator buttons on a TI-83 calculator. They are pretty well enclosed, but you will see how much dust can settle in just through various humidity conditions, especially if you take it to gigs. Good Luck.

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Nov 24, 2011 | Yamaha Music

1 Answer

Black berry 9700 manu and back key not working


Hi
seems like your phone have moisture damage or water damage.you need to clean the key contact.
open your phone and clean contact. thank you.

Sep 09, 2011 | RIM BlackBerry Bold 9700 Smartphone

1 Answer

Assistant was cleaning phone and now Line 2 is on hold and we can't release?


When cleaning norstar phones" do not" clean phones with soap and water use a electical contact cleaner. With this problem I think you have one of the keys on the phone stuck down take and run your finger over the keys.If this doesn't work you may have to have the phone taken apart.If there is water in the phone use a hair dryer to dry keys.

Oct 02, 2009 | NorStar T7316E Corded Phone

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It's a Roland HP-7e digital piano about three years old.


You may need to clean the contacts which are usually conductive rubber. I explained stuff for another Roland problem with two keys that were intermittent. I have an EP-7 that I had to do the cleaning of the key contacts. Use 91 or 99 % Isoprophyl alcohol to clean BOTH the conductive "pill" (Black under silicone rubber domes) AND the traces on the board where they press. Clean gently as the traces have a hard black coating.

Jul 26, 2009 | Roland Music

1 Answer

The keypad 3, 6 and 9 of my sonyericcson k750i are not functioning....


If you feel confident and competent enough, try taking your phone apart and giving the internals a good clean, take the white keypad PCB out and clean both it's contacts and the contacts on the phone's mainboard, and clear out any dust. Put the phone back together and see if that's solved the problem. It could also simply be that the keypad connector has worked loose




Key Pressed : Key presses phone appears to see
:
3 : 3 then left soft key
6 : 6 then right soft key
9 : 9 then back
c : c then #
left soft key : 3 then left soft key
right soft key : 6 then right soft key

(All the other keys worked correctly)

As I didn’t know what was causing this I attempted to move all data stored on the phone to the memorystick so I could master reset and possibly reflash, although after this I returned to the homescreen to find all keys had started functioning correctly again,





Key Pressed : Key presses phone appears to see
:
3 : 3 then left soft key
6 : 6 then right soft key
9 : 9 then back
c : c then #
left soft key : 3 then left soft key
right soft key : 6 then right soft key

(All the other keys worked correctly)

As I didn’t know what was causing this I attempted to move all data stored on the phone to the memorystick so I could master reset and possibly reflash, although after this I returned to the homescreen to find all keys had started functioning correctly again,

Jun 25, 2009 | Sony Ericsson K750i Cellular Phone

1 Answer

Missing letters


Reason:
  1. You might have loose connection or contact with your PC.
  2. This was either spilled by water or moist that corrode the circuit board/ film.
Solution:
  1. try to pull your connector then try to see if its contact was corroded and clean it with an pencil eraser (if possible - USB type) or clean the metal contacts with a sharp metal object.
  2. open the circuit of the keyboard and wipe the moist out with a clean cotton or absorbent cloth. be sure to put all the keys intact. Be extra careful while opening it.
Hope this thing works.

regards,
-engrkoiled-

Mar 27, 2009 | Logitech LX 710 Keyboard/Mouse

1 Answer

Intermittent loss of mobility, get beep beep sound


I sounds like the switch is not making contact relieably. Make sure your key is clean and if that does not work, than the switch inside the console will need to be replaced. Contact Pride Mobility for a technician local to you.

Nov 12, 2008 | Pride Go-Go Ultra X 3-Wheel Travel Scooter

1 Answer

Eypad problem


First try repeatedly pressing 8 key while at Home screen to see if problem is permanent or intermittent.
Pressing a number key at Home screen will cause the phone to display 8 if any press is recoginized/dialing.

If it is intermittent, then it is likely a hardware problem. Disassemble phone to keypad/phone printed circuit interface. Clean interface with alcohol or clean pencil eraser and disconnect/reconnect any cable interfaces. This may be worth a try even if key is not intermittent.

If this doesn't work or you don't want to disassemble, you can try a phone Hard Reset. See my other solutions on how to do a Hard Reset. Basically, hold down both left and right softkeys while turning on the phone. A Reset screen will display. Note all personal apps and data you added to phone since new is lost.

May 04, 2008 | Orange SPV C500 Pocket PC

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