Guest Janne Petman Posted August 14, 2008 Report Posted August 14, 2008 Hi there all you rad peeps! My first post to the MoDaCo community turns out to be a cry for help regarding this project. Long story short I broke my hands free usb plug (HTC S730 default accessory), bent the connectors and cut one of them just to make sure it becomes irreparable. Luckily I got steady hands for soldering, an excellent electronics shop one kilometer away and some spare time on my hands. Is there anyone on the forum who has had experience soldering mini usb connectors, whether I need some specific usb plug or is it okay to just cut any PDA/camera cable? I have been unable to find decent wiring instructions (or the headsets color coding just sucks). Either way I'm stuck at this point without external help from you guys (or should I turn over to xda-dev?). Thanks in advance, please be gentle!
Guest sliver Posted August 15, 2008 Report Posted August 15, 2008 You may want to look on the back of the surface mount mini-usb connector. If it has 4 or 5 pins, you are in luck, it's a mini-usb connector. If it LOOKS like a mini-usb connector but has 11 pins or so, then it's an EMU connector (enhanced mini-usb), in which case, you are going to have a little bia of a time finding one of those in SMT through normal component retail channels. Keep us posted... Cheers, Sliver. Hi there all you rad peeps! My first post to the MoDaCo community turns out to be a cry for help regarding this project. Long story short I broke my hands free usb plug (HTC S730 default accessory), bent the connectors and cut one of them just to make sure it becomes irreparable. Luckily I got steady hands for soldering, an excellent electronics shop one kilometer away and some spare time on my hands. Is there anyone on the forum who has had experience soldering mini usb connectors, whether I need some specific usb plug or is it okay to just cut any PDA/camera cable? I have been unable to find decent wiring instructions (or the headsets color coding just sucks). Either way I'm stuck at this point without external help from you guys (or should I turn over to xda-dev?). Thanks in advance, please be gentle!
Guest Janne Petman Posted August 20, 2008 Report Posted August 20, 2008 Thanks for the response! By comparing a regular usb and this repairable plug side by side I see these little differences. Slightly different form factor, 11 pins instead of 5. However the circuit seems relatively simple, and there's only 5 solder points. I have to snoop around for that EMU connector. It's my first week without a HF set and I'm already falling apart *shudders* I'd better buy another hands free and fix this one as a hobby project. At least then I'll have a spare if it happens again. P.S. I even managed to rip open my protective leather case. Hope that 1 year warranty will save me from sewing/glueing it back together :D
Guest djbmw Posted April 22, 2009 Report Posted April 22, 2009 If you're good at micro-soldering then you can replace the EMU (mini usb port) for the TYTN, Tilt, 8525, etc. You can purchase the connector (11 pin) from eBay for $3 plus $5 shipping from Hong Kong. You'll need to remove any memory cards, SIM cards, stylus etc from your phone and remove the 4 screws on the back. To remove you'll need an A5 (i think i used an A5) screwdriver (mini star screwdriver). Once removed, pop out the battery cover release tab and GENTLY lift the circuit board up (you'll need to gently pry the plastic retaining tabs that hold the board in). You only need to lift it up an inch or so - enough to get your soldering iron in. Once the board it up, there are two 'feet' on the EMU that have been soldered to the board on the top and two more feet that are inserted into the board that were also soldered in. If you have the new EMU in front of you, you'll see the feet that im talking about. Place your iron tip on these joints and get them to free up. Next, place your tip lengthwise on the 11 pins at the rear of the connector as they are soldered on. Once free, you're able to remove the old EMU. Place the new EMU in place and solder the 4 feet in 1st, making sure that the 11 pins are aligned as best as possible. Once the feet are soldered in, use a magnifying glass to ensure that all 11 pins are EXACTLY aligned. Touching your soldering gun tip to each of these pins will re-heat the old solder that's still on the board and secure the new pins so there is no need for new solder on here. Put the phone back together and power up - all should be good! I've included some pics below Alternate photo links if the above pics dont work: http://img2.pict.com/44/6f/37/f8b5634d2a6e...00/miniusb2.jpg http://img2.pict.com/b0/b3/35/1d430618b666...00/miniusb3.jpg http://img2.pict.com/07/f7/a5/aa684310cf3b...00/miniusb4.jpg http://img2.pict.com/61/ff/83/ddf251e493ad...00/miniusb5.jpg http://img2.pict.com/24/89/33/6f14efc793c7...00/miniusb8.jpg http://img2.pict.com/f3/64/5c/5de1c039ff6b...00/miniusb9.jpg http://img2.pict.com/ec/bf/84/fbd6c7f20e84...0/miniusb10.jpg http://img2.pict.com/db/1b/c1/9722fec94ce5...0/miniusb11.jpg http://img2.pict.com/d1/ef/6e/6f138fe90b89...0/miniusb12.jpg Good Luck!
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