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Subject: RE: dead "play" button on Jukebox 20
From: VanBaren, Gerald (AGRE) (Gerald.VanBaren_at_smiths-aerospace.com)
Date: 2003-10-30


Try DigiKey www.digikey.com. They sell "cut tape" quantities of many types of surface mount switches. If you get a printed catalog, they have pictures, otherwise the information is all on the web site, it is just harder to find the right switch because the main selection is not visual. Once you pick a switch, a .pdf of the catalog page is available that you can download and see diagrams and sketches of the switches.

You can download the catalog from http://dkc1.digikey.com/us/pdf/T033/Catalog.html

gvb

> -----Original Message-----
> From: Mike Ryan [mailto:mryan_at_itol.com]
> Sent: Wednesday, October 29, 2003 10:40 PM
> To: rockbox_at_cool.haxx.se
> Subject: RE: dead "play" button on Jukebox 20
>
>
> Well, I tried some surgery today. First, I found that it is
> MUCH easier to
> remove the smallest PCB by cutting the two metal tabs instead
> of unsoldering
> a BUNCH of places. Nice tip in the disassembly instructions!
> I found the
> little switches to be a LOT smaller than I expected them to
> be. I assumed
> that perhaps there was just a cold solder joint on the
> particular switch.
> However, I was not expecting them to be surface mounted.
> Looks like they
> would have had enough room to use a rubber-like button on a
> contact on the
> PCB like they do in all recent TV remotes. I wish that they
> had. TV remotes
> seem to last forever, even when I constantly use the up/down channel
> buttons.
>
> As you stated below, the problem is the switch itself, not
> the mounting /
> soldering. I'm thinking that perhaps the easiest thing to do
> is to remove
> the unused LINE-IN port and install a small pushbutton switch
> jumped to the
> appropriate lines. Of course, I'll have to be even more
> creative if another
> button stops working... If anybody knows where the same
> switches could be
> purchased from I'd bet they could sell a bunch. I'd replace
> all six at the
> same time as long as I had the case open. I'd buy a few
> spares as well,
> knowing how unreliable they are.
>
> Thanks for all the suggestions and help!!!!
>
> Mike
>
> -----Original Message-----
> From: owner-rockbox_at_cool.haxx.se [mailto:owner-rockbox_at_cool.haxx.se]On
> Behalf Of perterm
> Sent: Wednesday, October 29, 2003 3:10 AM
> To: rockbox_at_cool.haxx.se
> Subject: AW: dead "play" button on Jukebox 20
>
> Von: Mike Ryan
> > Suddenly the PLAY button is not working most of the time it
> is pressed.
> > ...
> > I'm pretty sure that the switches used are similar to the
> metal "disks"
> > on an IC that were used, for example, in the old Atari 2600
> joysticks.
>
> I've had the same problems with nearly all the switches in my
> JBR. I haven't
> found any distributor for suitable replacements switches (they're
> extraordinarily flat) thus I unsoldered the switches and opened their
> housings. In all these switches the little contact metal
> "disks" (the things
> that were supposed to go 'click') were cracked. I managed to
> rebend these
> thingies so that the switches worked - for a short while. Unusual high
> pressure was necessary to operate some of these repaired
> switches. This
> pressure bent the pcb slightly - to much in the long run.
> Some wire on the
> pcb seems to have suffered a hariline crack. Now the unit
> crashes at random.
> Resoldering each single solder point didn't help and I can't
> find which wire
> is broken. -> The unit is beyond repair. :(
>
> Phil
>
>

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