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Blog: Read our latest blog entry on iOS 11 - iPhone 6S Touch not working
Blog: Read our latest blog entry on Touch Disease
Cumulus Touch IC
How ironic is that? By todays' standard, electronics back in those days was simply enormous. Look (left) at what we have to work with today.
Refectio specializes in micro soldering repairs, data recovery and water damage repairs on iPhone's, iPad's, Mac's & PC's, Flash Drives & USB Drives as well as all types of electronic devices. We've fixed drones, appliance pcb's, security cameras...if your not sure if we can fix it, send us a note!
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Flux & Heat to Cumulus IC
- Touch Disease / Pry Damage
- Long-Screw Damage / FPC connector
- Backlight / Micro-jumper
- Water Damage / Data Recovery
- General troubleshooting
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My iPhone died and I need to get the pictures!Alright, seeing as how I am always answering questions here, I thought I'd reverse the roles here for a bit of fun. I have...
iMac is not booting (black screen, no chime)Hello Mac Experts (@mayer, @danj , @reecee and others) I have an iMac 27", Late 2012 that is not booting properly. It is...
iPad has very thin "cracks" along the edge of the LCD...but not reallyThis iPad has a dead zone on the left edge of the digitizer, about 5 mm from the edge. I proceeded to do a standard...
Dead SSD? Can I replace with 2014 SSD?Hello Mac Guru's (talking to you @mayer, @danj, @reecee)! I have another MacBook Air A1466, this one an early 2015. The...
Shuts down when disconnected from ACHi everyone. This is a follow-up to my MacBook Air 13” (2014) – Water Damage, will not power on. Thanks to everyone who...
MacBook Air 13” (2014) – Water Damage, will not power onHi everyone. I have a water damaged (tea) MacBook Air that was dead as a doorknob. No light on the MagSafe, no fan or...
Answer to "iPhone 6 Screen not responding to touch."How bent was your device? The risk here is that the logic board took some damage in the Touch area. This could be a problem with the CUMULUS/MESON IC’s, or the CHESTNUT IC which powers them. This could also be damage to a passive component on those lines, such as a cracked component or solder connection. Worst case, this could also be some cracked internal lines. As Chris suggested, start by comparing the LCD/Touch connectors to a known-good board (or the values in ZXW). If that doesn’t give you any leads, carefully inspect the board and possibly reflow, or better yet, replace the IC’s mentioned above…one at a time.
Answer to "Dead iPad changed charging port and tri chip already"You can check out my answer here (Randomly Shuts Off After Battery Replacement) for a similar problem. In my experience, iPad charging issues follow this pattern: (1) Check the battery condition with a software tool like 3uTools. If the battery shows signs of wear (less than 70-75% of design capacity), replace the battery. (2) Check the battery charging with a USB ammeter. If the battery isn’t drawing 1-2A, depending on the charger and charge state, it may be a bad battery or faulty charging circuit. It’s usually the battery ;>). (3) If/when you open the device, check the screws holding the charge port in place (see step 82 of this guide). The ones highlighted or the ones on top (as seen in the image) can become loose. If they are loose, your charge port flex is almost certainly damaged and will require replacement (micro-soldering required). (4) If the flex is good and the battery seems fine, then it may be logic board related. This can be the Tristar IC or in some cases the PMIC. The PMIC is a difficult...
Answer to "Randomly Shuts Off After Battery Replacement"What is the history of this device? You need to determine if this is a charge/battery issue or an overall logic board issue. Here are my suggestions if it is charge/battery related: When troubleshooting charging issues, I would do the following (in order): (1) Always try another Lightning cable and charger, preferably Apple original or MFi certified units. (2) The Lightning cable 8-pin connector should be sitting flush with the housing and completely inserted. If it is not, there could be lint/dust/debris inside the port impeding a proper connection. You can clean it out with a toothpick, fine point tweezers or a dental pick. Just be careful not to damage the pins inside the Lightning Port. (3) Change the battery. The battery is the weakest link in the entire device and certainly for charger related issues. Use a battery utility, such as coconutBattery (for Mac) or 3uTools (for Windows) to test the battery prior to removal. Anything less than 70% of design capacity will require replacement. (4) If the...
Answer to "Yellowish tint on LCD"You don’t really give us much to work on…are all of these Apple original screens or do they come from various suppliers and/or refurbishers? I highly doubt there would be this much variance on true original Apple screens, this looks more like what everyone always says about “you get what you pay for” in aftermarket screens.
Answer to "Charging works, but headphones don't work."You may have a poor quality Lightning Flex and it just took a certain amount of time before it failed. I would try a new replacement flex, preferably one purchased from a quality supplier to see if that solves your problem.
Answer to "NFC disables touchscreen, started after screen replacement.""(with whatever display was available)" What exactly do you mean by this? The first thing I would suspect is a poor quality or partially defective screen. Re-install the original screen if you can to see if the NFC issue goes away. If it does, order a better quality replacement screen. Also double check your work by following this guide to insure you didn’t make any mistakes with the screws, especially in the upper area where most of the antennas are embedded.
Answer to "Phone not booting after drop. Black screen"What do you mean “has no value”? Do you mean it’s reading OL on your meter in resistance mode, reading 0 (ohms or volts) or do you mean something else? At any rate, if you want to rule things out, just connect the logic board to a known good Lightning flex and battery (or DCPS) and see if the computer recognizes it. After a hard drop, almost anything can happen so there’s no silver bullet here. Probe the main power rails to start, then move onto secondary rails if required. You can also probe the BB subsystem. With more info, we may be able to point you in the right direction.
Answer to "No boot - problem with Charger_LDO?"IIRC, Charge_LDO is at 0V when on battery power only and ~VCC_MAIN when charging I think your issue is elsewhere and you need to take a step back and probe your board without making any assumptions. Tristar/Tigris is a common repair but sometimes we get blinded by that and forget to look at the rest.
Answer to "iPhone X won’t turn on after being face down in a small puddle"With water damage, you have to decontaminate the logic board before doing anything else, otherwise there will be latent issues down the road. Sometimes water damaged phones will work for a short time before failing completely. That is actually the worst possible scenario because a proper decontamination would have probably saved the phone. Keeping it plugged in just amplifies the corrosion and can kill critical subsystems, leading to a dead phone and possibly lost data. Not every water-damaged phone is recoverable and depending on the kind of liquid (salty, dirty, filthy), sometimes the success rate is quite low. That said, IMHO, it's always worth a try otherwise we are just piling up the e-waste. You should avoid putting a phone in rice or leaving it sit, drying”, for days on end. The water is inside the phone, on the logic board and under the shields, even under the IC's. The rice is nowhere near where the water is. So while it “may’’ soak up some water vapour, the real problem is the mineral deposits...
Answer to "Touch issues after screen replacement"This is most likely a poor quality or defective replacement screen.
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