|
Welcome to the GSM-Forum forums. You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. Only registered members may post questions, contact other members or search our database of over 8 million posts. Registration is fast, simple and absolutely free so please - Click to REGISTER! If you have any problems with the registration process or your account login, please contact contact us . |
|
Register | FAQ | Donate | Forum Rules | Root any Device | ★iPhone Unlock★ | ★ Direct Codes ★ | Direct Unlock Source | Search | Today's Posts | Mark Forums Read |
iPhone, iPad, iPod Hardware Repair Hardware Repair discussions for iPhone, iPod , iPad & Apple Products, help, guides. |
| LinkBack | Thread Tools | Display Modes |
11-07-2017, 10:19 | #1 (permalink) |
Junior Member Join Date: May 2017
Posts: 7
Member: 2720825 Status: Offline Thanks Meter: 0 | iPhone 6 Not Powering On - 0.42a Draw I figured I would share this one with the community. I have an iPhone 7 I have spent 3 hours on. I have replaced Tristar and Tigris and the draw stays the same. I have checked for VBATT and VCC_MAIN both are present. I can't find any unusual diode mode measurements on any of the connectors, the only part that seems to get remotely warm is Tigris but I have checked all resistance measurements under it and they are all normal. I have given in, the phone doesn't boot, no dfu, it just stays at 0.42a draw the instant you plug in the USB. The only thing that is worth mentioning is the case shows signs of being bent by a few degrees at the sim tray area, I put it down to a potential NAND issue where the bend could have caused the pads to pop. I haven't tried removing NAND as it often causes me lots of headaches, any other suggestions besides removing NAND would be appreciated (recall and is an absolute last resort in my eyes) Thanks |
11-07-2017, 19:39 | #2 (permalink) | |
Freak Poster Join Date: Mar 2013 Location: Greece Age: 35
Posts: 425
Member: 1903358 Status: Offline Thanks Meter: 146 | Quote:
Also how you measure BATT_VCC? | |
The Following User Says Thank You to ninos22 For This Useful Post: |
04-05-2019, 08:43 | #5 (permalink) |
No Life Poster Join Date: Jul 2008 Location: Mumbai Age: 36
Posts: 1,023
Member: 821646 Status: Offline Thanks Meter: 507 | Phone Drawing that low Amp means some of the Buck voltage is not getting generated. Dropped phone usually has this issue. You could try heating the pcb on a preheater at 150 degree Celsius for 3 to 4 minutes. I am sure the phone would turn on .... (But if other issue would not work.) Hope that helps. |
The Following User Says Thank You to CDMA_RASHID For This Useful Post: |
Bookmarks |
Thread Tools | |
Display Modes | |
| |
|