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Messages - Md. Abrar Amin

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46
EEE / How to Repair Dodgy or Broken Headphones: Part-5
« on: April 22, 2017, 12:13:50 PM »
5
Test with the multimeter. The multimeter will beep if there are no breaks in the wire. Use a sharp knife to cut the insulation from the wire, following the instructions below. Be careful not to cut the wire inside.
Make a slit next to the plug, and one next to the earpiece.
The bare copper wire usually has a clear protective coat. Gently scrape it away with a knife.[1]
Touch the wire in one slit with the black multimeter lead. Touch the other slit with the red lead. If it beeps, the problem is in the plug or earpiece.
If it does not beep, make a slit halfway along the cable and test each half of the cable.
Make another cut in the half that does not beep. Repeat until you've found two points a few inches (several cm) apart that do not cause the multimeter to beep.
Continue on to Fixing the Cable, skipping the test step.

47
EEE / How to Repair Dodgy or Broken Headphones: Part-4
« on: April 22, 2017, 12:13:32 PM »
Set up a multimeter. If you haven't found the problem yet, use a multimeter. You can find one at a hardware store. You'll need a sharp knife as well, so children should ask an adult for help. Set up the multimeter as follows:
Set the multimeter to test continuity, marked by ))) or a similar symbol.
Plug the black lead into the hole marked COM.
Plug the red lead into the hole marked with an Ω, mA, or ))).

48
EEE / How to Repair Dodgy or Broken Headphones: Part-3
« on: April 22, 2017, 12:13:09 PM »
3
Borrow a friend's earpiece. If you can't hear anything, unplug your cables from the earpiece. Plug them into a different earpiece. If you can hear sound now, go to Fixing the Earpiece.
If you cables don't unplug from the earpiece, continue to the next step, Set up a multimeter.

49
EEE / How to Repair Dodgy or Broken Headphones: Part-2
« on: April 22, 2017, 12:12:30 PM »
Try pushing the plug. If you can only hear audio when you push the plug end of the headphones, skip down to Fixing a Broken Plug.

50
EEE / How to Repair Dodgy or Broken Headphones: Part-1
« on: April 22, 2017, 12:12:08 PM »
That horrible day has to occur at some point -- when your headphones or ear buds finally start calling it quits. Luckily, you don't have to rush out and buy a new pair! You may be able to fix it yourself, after a stop at an electronics store. The parts you'll be repairing are delicate, so there is risk of damage. But if your headphones are already broken, you don't have much to lose.

1
Listen while bending the cable. Bend the cable while you listen. If you can hear some audio through your headphones, move on to Fixing the cable, below.

53
great post

54
EEE / Re: Phosphorene reveals its superconductivity
« on: April 22, 2017, 10:52:04 AM »
great post

55
great post

56
nice post

57
Good indication.

58
thnx for sharing

59
nice post

60
Great Post !

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