Re: CMOS battery replacement
On 12/19/2015 9:27 AM, H. Nikolaus Schaller wrote: Hi, Am 12.12.2015 um 03:06 schrieb Benjamin Deering: On Fri, 11 Dec 2015 15:38:54 -0800 Andrew Schenck wrote: That's a lot more work than I had hoped. Thanks very much for the info though. If I'm going to be soldering I might as well try to fix the USB port and GPS port at the same time. -Andrew On 12/11/2015 1:30 PM, Benjamin Deering wrote: The backup battery (supercap?) is welded to its bracket and won't push out. I replaced the backup batteries in my GTA02s with supercaps several years ago. http://www.jeepingben.net/zen/zenphoto/index.php?album=2010/freerunner_supercap_install The parts I used didn't match the original footprint so it was a little work. If you get the exact replacement part, it would be easy if you have soldering experience. I vaguely remember a software problem causing the line that charges the backup bat/cap not being set high. Good luck, Ben On Fri, 11 Dec 2015 12:26:54 -0800 Andrew Schenck wrote: The secondhand GTA04 I have now is pretty beat up and can't charge because the USB port is disconnected. I've been using a spare GTA02 as a charger, but every time I switch out batteries the clock resets to 12/12/1999 16:00 and it's a pain to re-set it since network time doesn't work. I couldn't find any information on the wiki about replacing the CMOS battery to solve this problem; has anyone here dealt with this same problem before and have recommendations? The GTA04 already has a supercap in battery shape. They came to the market in ~2011. Since there is nothing to replace (a supercap rarely fails), it is most likely a software issue that the charging current provided by the tpw65950 is not enabled. That's good to know. I had foolishly assumed that the GTA04 used the same solution as the GTA02. So which OS are you using? In most systems I know, the RTC "resets" to 1st Jan 2000. I'm using Radek's last QtMoko, v56 for GTA04, kernel 3.7.0-gta04-qtmoko-v56. The RTC *does* reset to 1 Jan 2000 0:00 but I'm at UTC -8:00 so it becomes Dec 31, 1999 16:00. If I could trigger the tpw65950 manually via console every once in a while that would be fine enough. Thanks, -Andrew I was successful in fixing the USB port, but never tried the GPS port. The GPS port is under a lot of stress when the board is installed. Should not be the case. You should move the USB+GPS socket as flat as possible into or out from the case. Then push out the case at the position of the headset connector so that the latter snaps down a little in its hole. This avoids breaking off connectors. See also photos in chapter 4 (especially page 18) of the GTA04 system manual: http://projects.goldelico.com/p/gta04-main/downloads/47/ I ended up giving up on the traces and soldering thin wires to the ESD protection chip and to the leads on the jack. That is fine and indeed sometimes needed if a socket was broken off. After getting the USB port connected electrically, I used JB weld epoxy to fix it mechanically. The repair lasted years including some pretty rough use and being reflow soldered. Good luck, Ben I disassembled a GTA02 enough to see the battery, but it didn't yield to gentle pressure trying to slide out of its bracket and I don't want to destroy things too badly in my attempt to fix them so I didn't push too hard. Because of this, I don't even know the exact type of button cell to buy to replace it. Any help would be appreciated. The GTA04 original part is a PAS414HR-VG1. BTW: it should also work in the GTA02 (which has a real 3.3V LiIon cell in 414 package). Thanks, -Andrew BR and also good luck, Nikolaus ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
Re: CMOS battery replacement
Hi, Am 12.12.2015 um 03:06 schrieb Benjamin Deering: > On Fri, 11 Dec 2015 15:38:54 -0800 > Andrew Schenck wrote: > >> That's a lot more work than I had hoped. Thanks very much for the >> info though. If I'm going to be soldering I might as well try to fix >> the USB port and GPS port at the same time. >> >> -Andrew >> >> On 12/11/2015 1:30 PM, Benjamin Deering wrote: >>> The backup battery (supercap?) is welded to its bracket and >>> won't push out. >>> >>> I replaced the backup batteries in my GTA02s with supercaps several >>> years ago. >>> http://www.jeepingben.net/zen/zenphoto/index.php?album=2010/freerunner_supercap_install >>> >>> The parts I used didn't match the original footprint so it was a >>> little work. If you get the exact replacement part, it would be >>> easy if you have soldering experience. >>> >>> I vaguely remember a software problem causing the line that charges >>> the backup bat/cap not being set high. >>> >>> Good luck, >>> >>> Ben >>> >>> On Fri, 11 Dec 2015 12:26:54 -0800 >>> Andrew Schenck wrote: >>> The secondhand GTA04 I have now is pretty beat up and can't charge because the USB port is disconnected. I've been using a spare GTA02 as a charger, but every time I switch out batteries the clock resets to 12/12/1999 16:00 and it's a pain to re-set it since network time doesn't work. I couldn't find any information on the wiki about replacing the CMOS battery to solve this problem; has anyone here dealt with this same problem before and have recommendations? The GTA04 already has a supercap in battery shape. They came to the market in ~2011. Since there is nothing to replace (a supercap rarely fails), it is most likely a software issue that the charging current provided by the tpw65950 is not enabled. So which OS are you using? In most systems I know, the RTC "resets" to 1st Jan 2000. > I was successful in fixing the USB port, but never tried the GPS port. > The GPS port is under a lot of stress when the board is installed. Should not be the case. You should move the USB+GPS socket as flat as possible into or out from the case. Then push out the case at the position of the headset connector so that the latter snaps down a little in its hole. This avoids breaking off connectors. See also photos in chapter 4 (especially page 18) of the GTA04 system manual: http://projects.goldelico.com/p/gta04-main/downloads/47/ > > I ended up giving up on the traces and soldering thin wires to the ESD > protection chip and to the leads on the jack. That is fine and indeed sometimes needed if a socket was broken off. > > After getting the USB port connected electrically, I used JB weld epoxy > to fix it mechanically. The repair lasted years including some pretty > rough use and being reflow soldered. > > Good luck, > > Ben > I disassembled a GTA02 enough to see the battery, but it didn't yield to gentle pressure trying to slide out of its bracket and I don't want to destroy things too badly in my attempt to fix them so I didn't push too hard. Because of this, I don't even know the exact type of button cell to buy to replace it. Any help would be appreciated. The GTA04 original part is a PAS414HR-VG1. BTW: it should also work in the GTA02 (which has a real 3.3V LiIon cell in 414 package). Thanks, -Andrew BR and also good luck, Nikolaus ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
Re: CMOS battery replacement
The backup battery (supercap?) is welded to its bracket and won't push out. I replaced the backup batteries in my GTA02s with supercaps several years ago. http://www.jeepingben.net/zen/zenphoto/index.php?album=2010/freerunner_supercap_install The parts I used didn't match the original footprint so it was a little work. If you get the exact replacement part, it would be easy if you have soldering experience. I vaguely remember a software problem causing the line that charges the backup bat/cap not being set high. Good luck, Ben On Fri, 11 Dec 2015 12:26:54 -0800 Andrew Schenckwrote: > The secondhand GTA04 I have now is pretty beat up and can't charge > because the USB port is disconnected. I've been using a spare GTA02 > as a charger, but every time I switch out batteries the clock resets > to 12/12/1999 16:00 and it's a pain to re-set it since network time > doesn't work. I couldn't find any information on the wiki about > replacing the CMOS battery to solve this problem; has anyone here > dealt with this same problem before and have recommendations? > > I disassembled a GTA02 enough to see the battery, but it didn't yield > to gentle pressure trying to slide out of its bracket and I don't > want to destroy things too badly in my attempt to fix them so I > didn't push too hard. Because of this, I don't even know the exact > type of button cell to buy to replace it. Any help would be > appreciated. > > Thanks, > -Andrew > > ___ > Openmoko community mailing list > community@lists.openmoko.org > http://lists.openmoko.org/mailman/listinfo/community > ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
Re: CMOS battery replacement
That's a lot more work than I had hoped. Thanks very much for the info though. If I'm going to be soldering I might as well try to fix the USB port and GPS port at the same time. -Andrew On 12/11/2015 1:30 PM, Benjamin Deering wrote: The backup battery (supercap?) is welded to its bracket and won't push out. I replaced the backup batteries in my GTA02s with supercaps several years ago. http://www.jeepingben.net/zen/zenphoto/index.php?album=2010/freerunner_supercap_install The parts I used didn't match the original footprint so it was a little work. If you get the exact replacement part, it would be easy if you have soldering experience. I vaguely remember a software problem causing the line that charges the backup bat/cap not being set high. Good luck, Ben On Fri, 11 Dec 2015 12:26:54 -0800 Andrew Schenckwrote: The secondhand GTA04 I have now is pretty beat up and can't charge because the USB port is disconnected. I've been using a spare GTA02 as a charger, but every time I switch out batteries the clock resets to 12/12/1999 16:00 and it's a pain to re-set it since network time doesn't work. I couldn't find any information on the wiki about replacing the CMOS battery to solve this problem; has anyone here dealt with this same problem before and have recommendations? I disassembled a GTA02 enough to see the battery, but it didn't yield to gentle pressure trying to slide out of its bracket and I don't want to destroy things too badly in my attempt to fix them so I didn't push too hard. Because of this, I don't even know the exact type of button cell to buy to replace it. Any help would be appreciated. Thanks, -Andrew ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
Re: CMOS battery replacement
On Fri, 11 Dec 2015 15:38:54 -0800 Andrew Schenckwrote: > That's a lot more work than I had hoped. Thanks very much for the > info though. If I'm going to be soldering I might as well try to fix > the USB port and GPS port at the same time. > > -Andrew > > On 12/11/2015 1:30 PM, Benjamin Deering wrote: > > The backup battery (supercap?) is welded to its bracket and > > won't push out. > > > > I replaced the backup batteries in my GTA02s with supercaps several > > years ago. > > http://www.jeepingben.net/zen/zenphoto/index.php?album=2010/freerunner_supercap_install > > > > The parts I used didn't match the original footprint so it was a > > little work. If you get the exact replacement part, it would be > > easy if you have soldering experience. > > > > I vaguely remember a software problem causing the line that charges > > the backup bat/cap not being set high. > > > > Good luck, > > > > Ben > > > > On Fri, 11 Dec 2015 12:26:54 -0800 > > Andrew Schenck wrote: > > > >> The secondhand GTA04 I have now is pretty beat up and can't charge > >> because the USB port is disconnected. I've been using a spare > >> GTA02 as a charger, but every time I switch out batteries the > >> clock resets to 12/12/1999 16:00 and it's a pain to re-set it > >> since network time doesn't work. I couldn't find any information > >> on the wiki about replacing the CMOS battery to solve this > >> problem; has anyone here dealt with this same problem before and > >> have recommendations? I was successful in fixing the USB port, but never tried the GPS port. The GPS port is under a lot of stress when the board is installed. I ended up giving up on the traces and soldering thin wires to the ESD protection chip and to the leads on the jack. After getting the USB port connected electrically, I used JB weld epoxy to fix it mechanically. The repair lasted years including some pretty rough use and being reflow soldered. Good luck, Ben > >> > >> I disassembled a GTA02 enough to see the battery, but it didn't > >> yield to gentle pressure trying to slide out of its bracket and I > >> don't want to destroy things too badly in my attempt to fix them > >> so I didn't push too hard. Because of this, I don't even know the > >> exact type of button cell to buy to replace it. Any help would be > >> appreciated. > >> > >> Thanks, > >> -Andrew > >> > >> ___ > >> Openmoko community mailing list > >> community@lists.openmoko.org > >> http://lists.openmoko.org/mailman/listinfo/community > >> > > > > ___ > > Openmoko community mailing list > > community@lists.openmoko.org > > http://lists.openmoko.org/mailman/listinfo/community > > > ___ > Openmoko community mailing list > community@lists.openmoko.org > http://lists.openmoko.org/mailman/listinfo/community > ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community