USB port resurrected by a new Zener diode

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USB port resurrected by a new Zener diode

Postby windom » Thu Mar 08, 2007 1:34 am

Two weeks ago the USB port of my MP3 player was dead and I later confirmed that it was because a Zener diode i was suspecting of. I just have got to buy a common Zener diode of the same size in a semconductors store and then solder it in order to repair the USB port of my player (now it appears again in the PC as normal and can transfer files with any PC again).

So if the USB port of your MP3/MP4 player gets dead but the playes can still work with the battery, all you must replace is the Zener diode, it's a little yellow sausage-like device between the USB port and the ATJ2085 chip.
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...but now it requires battery to connect to a PC

Postby windom » Tue Apr 24, 2007 12:58 am

I just forgot to tell that the zener diode replacing did not fully repaired my MP3 player, a little trouble remained: when I connect my player to a PC it only will be recognizable when it has a charged battery inside, and when I remove the battery from the player, the PC will warn about unsafe device extraction.
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Postby Schopf » Tue Apr 24, 2007 3:17 am

Do you have the specification for this zener? 3v, 1.5v or other?
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Postby windom » Sun May 27, 2007 4:23 am

The Zener diode I bought had only the letter "3.9B2".
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