This week we have had an ipad Air 1 arrive that has had a previous repair attempt for no power.
For all repairers any previous repair attempts are usually much more difficult to solve as you never know what the previous repairer may have done to the device. Whether they have overheated components causing bridging under IC’s or damaging parts of the phone, generally these repairs can end in several faults needing rectifying, this particular job included.
So to start this job off we plugged the ipad into charge through our ammeter and saw that it would not pull any current at all.
Upon opening the device we could clearly see that the charging port had been replaced, there were marks on the battery which shows the board had been removed and hopefully the battery tested. The main EMI shield had also been removed and not refitted, showing marks around the tristar (charging ic) this had clearly been replaced, although the job did look good with no major damage to surrounding components. We did however notice that the IC fitted was model 1610A3 where the Air 1 should be 1610A1. From experience we know that the Air 1 in particular is very picky as to which tristar ic it works with, in a lot of idevices these are changeable but on the Air 1 we never swap for another version as we know this can cause issues.
We next removed the board and connected up to our DC power supply. We then pressed the power button and the ipad booted up and seemed to work fine other than charging. We then knew that we were definitely up against a charging issue rather than a no power issue.
So from this we decided to first go to replacing the tristar ic with the correct version. We did this and checked voltages but unfortunately still had no power on the charging circuit. Next we turned to testing the charging port which looked terrible. After removing the previously replaced port we found several pads missing. After checking we found that 2 where for speaker lines and the others where ground so would not be a huge issue.
We cleaned up the pads and fitted a new port, we then cleaned and tested the ipad. After replacement the battery appears to charge perfectly but we did have problems with sound so we then ran jumpers from the charging port to the correct test points for the missing speaker line pads restoring the sound.
After this we covered the exposed solder pads and refitted the board into the ipad and charged it up fully to test the device. After passing our tests it was resealed and returned to the customer who was delighted to have their device back and working after having a bad experience with another 3rd party high street repair shop.
We have spent some time over the last week working on an ipad 5 that someone attempted to replace the screen on themselves.
Unfortunately this repair was with us about a week to get it back to its full glory.
It was brought in as after replacing the screen it would not power on. We connected to our ammeter and got 0.08/0.09 amps which is incredibly low for charging an ipad
We opened the ipad very easily as the replacement adhesive was very weak, straight away we could see that the home button flex had been torn. We removed the screws and gave the board a quick visual inspection. From initial inspection we could see that the power and volume button connector had been damaged. Also the connector for the home button was cracked and the main shield had marks making us think it had been removed before. None of this damage would cause the ipad not to turn on. We removed the main board EMI shield to inspect the components and saw no obvious damage.
We removed the board from the ipad and connected to our DC power supply to see if the ipad would boot. When connected and bridging power button the ipad would turn on and function, when then plugged into our ammeter we would only pull 0.08-0.22, constantly jumping which is still very abnormal. So from this we knew that there must be a fault on the charging circuit.
We then tested the voltages around the tristar charging ic and they seemed ok without checking to schematics. We then inspected the surrounding area and found a slightly damaged resistor, near where the pry marks on the shield was. we replaced this and the ipad would now charge normally.
From here we where able to test the device to ensure there were no more unknown faults before proceeding to repair the known issues.
Next we found a replacement power button fpc which matched the ipad air 1 connector, this was fitted which restored the volume button functions but not the power button. We checked the flex and found that one line from the power button was broken and repaired the flex.
We then turned to the home button, luckily the damage was on the connector side which is an extension flex, meaning instead of repairing the flex one track at a time we can actually replace the cable which is much easier to do and only needs basic soldering instead of lots of tiny micro jumpers.
We then tested this in the cracked connector on the board and although the connector was damaged it was still working fine, we decided that this did not need replacing.
As the ipad 5 is still a fairly new device we have not seen as many of these so do not hold as many spares in stock, this is the main reason for delays in this repair, along with the fact that schematics are available but no board views so components are much harder to identify than older models.
Nevertheless we returned the ipad to a very happy customer that was over the moon to have their precious ipad back in full working order.
Recently we had an iPad Air 1 in with backlight problems after a regular customer had replaced someones digitizer. This is a very common fault if the LCD is disconnected whilst the screen is on, and is usually caused by a blown filter.
We see this fault, amongst other backlight issues on idevices on a daily basis, we always start by checking with a known good screen. We then visually inspect the connectors and backlight circuits. Next we check filters and fuses which are usually found visually before testing. This is followed by checking for shorts and then we check our voltages.
70% of the time we will be able to physically see what the issue is with backlight faults, which usually makes fault finding very easy. This particular job just needed a quick visual check to see that one of the backlight filters had blown.
We removed the filter to find that one pad had also burnt off. This was not a major problem as we were able to run a micro jumper from the end of the remainnig trace onto the new filter to restore the connection.
This brought the ipad back to life restoring the full backlight.
We cleaned it up and sent it back on its way for another speedy repair and a happy customer that will come back again.
We take pride in our work and ensure that every job brings a happy customer at the end of it. If you have an issue with your device, or if you run a repair business and need a reliable company to outsource your board repairs to please feel free to get in touch.