|
Rockbox mail archiveSubject: RE: FM Recorder won't turn on / USB left connected overnightRE: FM Recorder won't turn on / USB left connected overnight
From: Mike Holden <rockbox_at_mikeholden.uklinux.net>
Date: Tue, 21 Oct 2003 10:34:20 +0100 (BST) If you are unsure what you are doing, I would recommend not playing with the liion battery in the FM, since explosions mnay occur if you get it wrong. The FM units have a charging control chip to avoid this situation. Arturo Gonzalez said: > I was under the impression that the batteris on the Recorder couldn't be > removed. Is it as easy as unscrewing the 4 screws around the blue > cushions? > > When you say "limited power supply" what exactly did you use? I am away > from all of my tools living abroad, and have limited electrical > knowledge/experience, and so I'm a little lost and need a little bit > more specifics... > Thanks. > > > -----Original Message----- > From: owner-rockbox_at_cool.haxx.se [mailto:owner-rockbox_at_cool.haxx.se] On > Behalf Of Neon John > Sent: Tuesday, October 21, 2003 4:53 AM > To: rockbox_at_cool.haxx.se > Subject: Re: FM Recorder won't turn on / USB left connected overnight > You'll need at least 6 volts to commence a charge. 1 amp will do it. > > The easiest way to bootstrap an FMR after flattening the battery is to > take the battery out and charge it externally. I just had to do this on > a friend's FMR so that he could get his stuff off before returning it on > extended warranty. > > I simply hooked both batteries in parallel by taping copper wire across > each end and then hooking the battery to a current limited power supply. > I set the current to one amp and allowed it to charge for an hour. That > charges the battery about half way, more than enough to get the thing > running again so that the internal charger can take over. > > FWIW, this FMR that I had to work on had its battery charging circuit > fail. That's why it's going back. That's the last one of the several I > caused to be bought several months ago. We all now have Recorders and > could not be happier. > > John > > --- > John De Armond > johngdDONTYOUDARE_at_bellsouth.net http://bellsouthpwp.net/j/o/johngd/ > Cleveland, Occupied TN > > On Mon, 20 Oct 2003 13:51:18 +0200, "Arturo Gonzalez" > <agon_at_email.arizona.edu> > wrote: > >>Hello to everyone. >>My girlfriend left the rockbox connected via USB to her laptop >>overnight, and predictably, the unit has fully drained batteries. >> >>I've read the archives and found a similar incident, but didn't see in >> the various threads how this was eventually resolved. (1) Do i charge >> the unit using the charger (I have the original US charger, but am >> living in Spain, where the charger won't work (I need one that accepts >> EU voltage)--do i buy the one Archos Tech support is selling or can i >> get one with the same specs?: Power Specifications : Input : 100-240Vac > >>50-60 Hz >> Output : 5 Volts 1.6 A -- Mike Holden Rockbox page: http://www.mikeholden.org/~rockboxReceived on 2003-10-21 Page template was last modified "Tue Sep 7 00:00:02 2021" The Rockbox Crew -- Privacy Policy |