Question about HP iPAQ HX4700 Pocket PC

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Replacing the speaker

How do i open the section where the speaker is located?

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This video shows how to replace the speaker on ipaq hx4700

http://www.repairhppda.com/video/How-to-Repair-for-HP-iPAQ-HX4700-HX4705-series.html

Posted on Mar 10, 2009

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Follow instructions to step 8 (with thanks to Anny for posting it)
http://www.annystudio.com/misc/ipaq4700/
With the motherboard removed, you will see the back of the speaker pictured in step 10.
I seem to recall that the 'official' replacement loudspeaker (17 UKPounds) looked identical to one taken out of an old Nokia mobile telephone I had lying around. I didn't try it - so I don't know if it would work but the DC resistance across the terminals were about the same.
The loudspeaker in the hx4700 is notoriously unreliable and can apparently be damaged by some software titles. I recall that HP published a firmware patch some years ago. I have also found that it is easy to miss the stylus receptical in the top of the device and it is possible to inadvertantly jam the stylus into the earphone socket. This can cause damage to the switch contacts in the jack socket that disconnects the loudspeaker when headphones are used giving the false impression that the loudspeaker itself has failed. I checked this with a multimeter before changing the speaker. In my case the contacts were OK but I doubt that I would have been able to repair the switch contacts without some serious soldering iron weilding.
A final note. The ribbon connector for the screen is VERY fragile. Be ultra careful when removing it.
Hope it helps.
Steve

Posted on Oct 26, 2008

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