https://wiki.pine64.org/index.php?action=history&feed=atom&title=PinePhone_1.1_VBUS_power_usage_Hardware_Fix 2026-04-29T03:44:50Z Revision history for this page on the wiki MediaWiki 1.37.1 https://wiki.pine64.org/index.php?title=PinePhone_1.1_VBUS_power_usage_Hardware_Fix&diff=18771&oldid=prev 2023-03-16T03:13:50Z

<p>Fixes</p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 03:13, 16 March 2023</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1">Line 1:</td> <td colspan="2" class="diff-lineno">Line 1:</td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>This page details a hardware fix for an issue that affects some early [[PinePhone#Hardware_revisions | PinePhone]] units, namely [[PinePhone v1.1 - Braveheart | v1.1 Braveheart]] units (fixed since [[PinePhone v1.2 | 1.2 community edition]] included).</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>This page details a hardware fix for an issue that affects some early [[PinePhone#Hardware_revisions|PinePhone]] units, namely [[PinePhone v1.1 - Braveheart|v1.1 Braveheart]] units (fixed since [[PinePhone v1.2|1.2 community edition]] included).</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The issue was [[PinePhone_v1.1_-_Braveheart#Excess_power_usage_while_driving_VBUS | originally reported here]] by megi.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The issue was [[PinePhone_v1.1_-_Braveheart#Excess_power_usage_while_driving_VBUS | originally reported here]] by megi.</div></td></tr> <!-- diff cache key wikidb:diff::1.12:old-6826:rev-18771 --> </table>

Fxc https://wiki.pine64.org/index.php?title=PinePhone_1.1_VBUS_power_usage_Hardware_Fix&diff=6826&oldid=prev 2020-09-02T10:23:34Z

<p>Add to PinePhone category</p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 10:23, 2 September 2020</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l41">Line 41:</td> <td colspan="2" class="diff-lineno">Line 41:</td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* [https://xnux.eu/devices/pp-pmic-fix.jpg Tutorial from megi]</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* [https://xnux.eu/devices/pp-pmic-fix.jpg Tutorial from megi]</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* [https://xnux.eu/devices/feature/anx7688.html Description from megi] at the end of the page</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* [https://xnux.eu/devices/feature/anx7688.html Description from megi] at the end of the page</div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"></ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"></ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">[[Category:PinePhone]]</ins></div></td></tr> </table>

Jbit https://wiki.pine64.org/index.php?title=PinePhone_1.1_VBUS_power_usage_Hardware_Fix&diff=6662&oldid=prev 2020-08-17T10:32:22Z

<p>Create page (with a lot of placeholders still)</p> <p><b>New page</b></p><div>This page details a hardware fix for an issue that affects some early [[PinePhone#Hardware_revisions | PinePhone]] units, namely [[PinePhone v1.1 - Braveheart | v1.1 Braveheart]] units (fixed since [[PinePhone v1.2 | 1.2 community edition]] included).<br /> <br /> The issue was [[PinePhone_v1.1_-_Braveheart#Excess_power_usage_while_driving_VBUS | originally reported here]] by megi.<br /> <br /> TODO: Add more pictures and schematics, better reference the fix origin and tradeofs, remove TODOs/FIXMEs.<br /> <br /> == Affected Units ==<br /> # [[PinePhone v1.1 - Braveheart]]<br /> <br /> FIXME: confirm [[Project Don't be evil|&quot;Project Don't Be Evil&quot; devkit]] and [[PinePhone v1.0 - Dev|PinePhone v1.0 - Developer batch]] are unaffected.<br /> <br /> == Disclaimer ==<br /> <br /> Though easier to perform than the [[PinePhone 1.2 VCONN Hardware Fix]], this fix requires desoldering relatively small Surface Mount Technology (SMT) components, therefore some experience with soldering is recommended.<br /> <br /> == Issue description ==<br /> TODO: pictures<br /> <br /> The AXP803 cannot detect when the USB port is powered by the battery. Therefore, the Power Management IC (PMIC) continues draining current from it. This is especially problematic since this USB port is powered from the battery with the USB OTG boost regulator. One of the symptoms is the battery discharging rather quickly even when the phone is powered off.<br /> <br /> == Workaround ==<br /> <br /> HW workaround is desoldering the U1301 regulator (TODO: describe its role) and shorting pads for R1309 on the PCB (this is a &quot;0 ohm&quot; resistor on the schematic, so it's completely fine).<br /> <br /> Shorting the pads is easy to do with some solder (while carefully avoiding to short it with nearby resistors).<br /> <br /> Desoldering the regulator is harder to do, since its large pads are designed to use the PCB as a heatsink and will happily cool down while you are trying to melt it. It should be possible to use properly sized pliers to cut the pins first, please edit if you attempt this.<br /> <br /> Please be careful not to overheat nearby components trough the PCB traces when applying heat to the regulator. It can be helpful to start the operation with melting some leaded solder tin together with the pads, and lifting the regulator while applying heat also helps. Start with the side that has only one pad: though it is bigger, it should be easier to lift up. It might be useful to apply a relatively large quantity of molten solder tin to each pin, in turn, while lifting the regulator, to reduce the PCB heatsink effectiveness.<br /> <br /> Feel free to add your experiences and tips here.<br /> <br /> <br /> === Tradeoffs ===<br /> TODO: Unknown to the author<br /> <br /> == Proper fix ==<br /> TODO<br /> <br /> == Sources and tutorials ==<br /> * [https://xnux.eu/devices/pp-pmic-fix.jpg Tutorial from megi]<br /> * [https://xnux.eu/devices/feature/anx7688.html Description from megi] at the end of the page</div>

M@yeulC