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2010-07-08
, 10:26
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Posts: 3,159 |
Thanked: 2,023 times |
Joined on Feb 2008
@ Finland
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#2
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send it to service or open the device and see if you are able to troubleshoot the issue.
it might be bad connection in vibration motor.
it might be bad connection in vibration motor.
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2010-07-08
, 10:33
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Posts: 601 |
Thanked: 549 times |
Joined on Mar 2010
@ Redditch, UK
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#3
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Not sure if it is a vibration "motor" per se rather it may well be a solenoid. A solenoid works on the principle of electromagnetism moving a demagnetised ferrous armature up and down within a stem tube, surrounded by copper coil acting as the "magnet". If the wires connecting to the solenoid are suffering from a "dry solder joint" or "fractures" or quite simply "poor connection" then it is easily remedied through another carefully applied drop or two of solder.
When soldering be careful not to short across any of the other lands (conneciton points on the board) for fear of permenently and completely bricking your phone.
From the short description of shaking it I would guess at a dry solder joint in that area. Although not sure where it would be......
Hope this helps....
When soldering be careful not to short across any of the other lands (conneciton points on the board) for fear of permenently and completely bricking your phone.
From the short description of shaking it I would guess at a dry solder joint in that area. Although not sure where it would be......
Hope this helps....
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2010-07-08
, 10:57
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Posts: 842 |
Thanked: 1,197 times |
Joined on May 2010
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#4
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"N900 refuses to vibrate - I'm getting desparate"
One could take that title -entirely- wrongly. XD
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I'm guessing the reason the OP said motor is that a lot of phone vibrators(all of the ones I've seen) use a micro brushed DC motor and a "half-sphere" weight on the shaft. As it spins, centrifugal force makes the whole thing shake, as its not even.
I could see using a solenoid for this purpose also, but it would require an electronic control circuit etc. to make it work. Not just a single FET for turning it off and on.
One could take that title -entirely- wrongly. XD
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I'm guessing the reason the OP said motor is that a lot of phone vibrators(all of the ones I've seen) use a micro brushed DC motor and a "half-sphere" weight on the shaft. As it spins, centrifugal force makes the whole thing shake, as its not even.
I could see using a solenoid for this purpose also, but it would require an electronic control circuit etc. to make it work. Not just a single FET for turning it off and on.
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2010-07-08
, 11:07
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Posts: 193 |
Thanked: 92 times |
Joined on May 2010
@ galveston, tx
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#5
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Is your phone overclocked?
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2010-07-08
, 11:30
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Banned |
Posts: 3,412 |
Thanked: 1,043 times |
Joined on Feb 2010
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#6
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Is the OP a woman by any chance? lol.
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2010-07-08
, 11:33
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Posts: 3,159 |
Thanked: 2,023 times |
Joined on Feb 2008
@ Finland
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#7
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Originally Posted by Switch_
all nokias I've disassembled have small DC motor with eccentric weight. and most of them are only pressed to the contacts by phones casing.
Not sure if it is a vibration "motor" per se rather it may well be a solenoid. A solenoid works on the principle of electromagnetism moving a demagnetised ferrous armature up and down within a stem tube, surrounded by copper coil acting as the "magnet". If the wires connecting to the solenoid are suffering from a "dry solder joint" or "fractures" or quite simply "poor connection" then it is easily remedied through another carefully applied drop or two of solder.
When soldering be careful not to short across any of the other lands (conneciton points on the board) for fear of permenently and completely bricking your phone.
From the short description of shaking it I would guess at a dry solder joint in that area. Although not sure where it would be......
Hope this helps....
e: something like this:
__________________
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wiki category:beginners. Browse it through and you'll be much wiser!
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| The Following User Says Thank You to ossipena For This Useful Post: | ||
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2010-07-08
, 11:34
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Posts: 171 |
Thanked: 337 times |
Joined on Jul 2010
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#8
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Originally Posted by noipv4
No, not at all. I did not do anything experimental with that phone.
Is your phone overclocked?
However, could you imagine any software related issue that might cause this phenomenon? That was actually my first guess. But the fact that I can (sometimes) improve to situation just by shaking the N900 (which may still be a coincidence) made me think it might be a hardware issue instead.
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2010-07-08
, 11:38
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Posts: 171 |
Thanked: 337 times |
Joined on Jul 2010
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#9
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Originally Posted by ossipena
Thank you very much for the information. Can you tell where this motor might be located?
all nokias I've disassembled have small DC motor with eccentric weight. and most of them are only pressed to the contacts by phones casing.
May I ask a (probably very) stupid question? Is there any mechanical fault that might have been been caused by dust?
When I took off the lid for the first time in months yesterday, I noticed that some dust had accumulated there. And, no, I usually tend to keep my N900 in a clean environment.
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2010-07-08
, 11:51
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Posts: 2,473 |
Thanked: 12,265 times |
Joined on Oct 2009
@ Jerusalem, PS/IL
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#10
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Or it could simply be dust or something in the motor which prevents it from vibrating (had that from day 1 - fixed it by leaving the motor running overnight).
You could try to run the motor at 255 (highest speed) and it might grind (
) the dust, if it is dust, as root, run: (don't touch the screen/keys after running the command - till the vibra works)
I don't know the specs of the motor and how long it could run for, but if/when the motor works touch any key to stop it (or the screen)
You could try to run the motor at 255 (highest speed) and it might grind (
) the dust, if it is dust, as root, run: (don't touch the screen/keys after running the command - till the vibra works)Code:
sleep 1; echo 255 > /sys/class/leds/twl4030:vibrator/brightness
I've been totally enthusiastic about my N900 for a few months now. But starting yesterday it suddenly refuses to vibrate which is quite a nuisance on touchscreen inputs.
Vibrating tends to work for a while and, then, it fades away. However, sometimes when I lightly shake my N900, the problem is remedied for another couple of minutes.
I assume there is a problem with that motor which is responsible for vibrating. Is there maybe an easy way to clean it?
I'd hate to send my N900 back.
Thanks for any help you can offer.