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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...
Resposta para "Replaced lightening port - now no one can understand what I say"You certainly want to eliminate a faulty replacement Lightning port (which the shop appears to have done). The motherboard issue they are referring to is the Audio IC issue on the iPhone 7, you can read my answer to this question (Replaced my screen, sound not working or vibrate, headphones work tho), just a few minutes ago, for more details. However, the Audio IC issue usually has the complete failure of one or more audio devices, i.e. a microphone, speaker, ear speaker, headphone etc. If your microphone kinda works but has poor quality sound, then I would suspect a modular component failure, in this case the Lightning Port (they may have a bad batch).
Resposta para "Replaced my screen, sound not working or vibrate, headphones work tho"Your description is a little confusing but this sounds like an Audio IC issue. This can happen seemingly out of nowhere and usually follows a reboot of an affected device, like when you shut it down to repair it. Sometimes the removal of the screen gives the logic board that last “flex” that puts it over the edge. Once rebooted, the phone exhibits symptoms that were never present before. The iPhone 7 series of devices have proven to be very unreliable, suffering from flex-based issues similar to the iPhone 6 Plus (Touch Disease). On the iPhone 7, the fault line runs along the top of the SIM card reader and affects the Baseband CPU and Audio IC. Any short copper traces running perpendicular to the fault line while connecting to micro-BGA pads, is subject to failing. On the Audio IC, this particularly affects the C12 pad/trace although there are 4 pads/traces along the fault line. Of those four, the C12 pad (I2S_AP_TO_CODEC_MCLK) is the most critical as it is a communication protocol line between the CPU and...
Resposta para "Rear camera and flash not working"The Flash requires a functional rear camera so I would start with replacing the rear camera module.
Resposta para "Spontaneous VCC-Main Short After NFC Repair"Here are a few observations, questions and suggestions: (1) What exactly did you repair? Did you replace or reball the NFC IC? (2) Previously water damaged board…always a red flag and adds one, if not more, variable to the mix. (3) Caps don’t go bad just from heat, it was probably flaky to begin with and may be related to the previous water damage. (4) Solder balls squeezing out is never a good sign either, you probably applied too much heat. Sometimes this is of no consequence but in this case, it probably is related to your issue. (5) Taking a flash picture seems to have caused a cascading failure. High current draw through the strobe driver, possible near shorts due to solder ball squeezing, excessive heat and probably bridging of solder balls. (6) I would remove the Backlight driver IC to see if the VCC_MAIN short goes away. (7) You could try connecting a battery instead of a DCPS to get a heat signature but this could cause catastrophic damage as there will be no current limiting. Another trick is to...
Resposta para "Ipad pro 10.5" shuts down after 10 min charging."Charge related issues could be the charge port, the battery or the charge circuit on the logic board. The charge circuit could be damaged by some water ingress, poor quality chargers or cables or just random component failures. There’s no way to know without opening up the device. If there’s water damage, I wouldn’t touch this device. Otherwise, calculate that you will have to lay down $150, maybe more to have this repaired and there’s always a possibility it is unrepairable. Besides, the original owner didn’t get it repaired and if they had, they could sell the device for more so I’m always wary of buying devices that are damaged. If you buy it, you have to accept the risk that you will lose everything (minus whatever buyer protection you have, i.e. eBay).
Resposta para "Swollen battery: my questions"I certainly wouldn’t keep it on a wood shelf ;-). Swelling doesn’t directly relate to igniting, as far as I know. You certainly want to dispose of it safely so call your city to see how you can do this. You could measure it to see if it still has any charge. If it doesn’t, then its probably safe to dispose of it at your local hardware/electronic store that recycles batteries. Of course, you could have some fun too…
Resposta para "Ear speaker/Loud Speaker/Mic Not working"It’s always important to fully test a device before attempting a repair. If you don’t do this, then you’ll never know if the problem was pre-existing or if it was caused by faulty replacement parts or mistakes in the repair itself. It’s not clear if this is a repair you were asked to do for a customer (or friend/family) or if you are buying/selling used phones. It doesn’t change the problem but it does affect solutions moving forward. Start by re-installing the original screen to see if the problem is consistent or not. While you’re at it, double check your work by following this guide. Take a close look at all the flexes; you want to see if there are any tears (however small) or damage to the connectors. Also insure that all of the connectors are properly seated because the ear speaker and loudspeaker are on completely different flexes but the connectors are relatively close to each other on the logic board.
Resposta para "Screen Won’t turn on after repair"The picture is a little blurry so I can’t say for certain but even the tiniest tears in the flex can cause issues. It’s very important to always disconnect the battery before disconnecting/reconnecting the screen assembly. The issue is that the LCD connector has pins that have high voltages (i.e. the backlight is ~20V) and ground in very close proximity. When you fumble around trying to line up the connector plug to the receptacle, you can short out the voltage rail and cause damage to the components in the backlight circuit. If you’re lucky, then only a backlight filter is damaged but other times, the entire circuit could be affected. Either way, this type of repair requires micro-soldering and isn’t really a DIY repair. To test for this, plug your device into a charger or an iTunes enabled computer. Then shine a bright flashlight on the screen. If you can see a dim image, then the backlight circuit has been damaged. If you can’t see an image at all, then it may be the LCD circuit that is damaged. You can...
Resposta para "Why won't my phone not turn on?"Is this something that occurred suddenly, for no apparent reason or was it following some kind of event like a drop, coming into contact with water or repair attempt? I would open up the phone and do a good visual inspection to see if anything is out of place or if you find evidence of water or other debris. When dealing with a “dead” phone, there is no "silver-bullet" solution. You have to probe the board to get a better understanding of what is working properly and what is not. It may be a simple solution or a complex one. Sometimes we see a visibly blown cap, replace and all is well. Other times, everything looks perfect yet the phone won't boot. You have to start at the beginning and check PP_BATT_VCC, PP_VCC_MAIN and PP5V0_USB. I would start by checking to see if those rails are shorted to ground. If one of these rails is shorted to ground, then you will need to identify what is causing the short. It could be a bad decoupling capacitor, conductive debris or defective IC that is directly supplied by...
Resposta para "iPad Pro 10.5 (2017) won't switch on"Was the device opened in order to give this diagnostic? If not, it’s hard to believe that a faulty CPU could be determined from just looking at the outside of the device. Can you give us more background information on how the device came to failure; was it dropped, repaired or came into contact with water? Based on the info you give us, my first suspicion would be a dead battery or perhaps a charge port issue. No juice and the device will not boot or run. You will probably want to get a second opinion because I have never seen a “bad cpu” on a device unless it was physically trashed or heavily corroded.
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