iPhone 6S came in for not powering on.
Tristar tester failed
So I just jumped to replacing Tristar (610A3B) without doing any further testing (my mistake), and Tristar tester no longer failed, but still wouldn't boot.
I then tested with Dt880 and found it had a 1.5A draw before Prompt To Boot.
Found the backlight IC was lightning up on my Seek Thermal Cam.
That explains the current draw before prmopt to boot. Backlight is powered by VCC MAIN and if it's shorted, it will pull current from VCC MAIN.
When that happens, the whole backlight circuit must be rebuilt, as it usually damages everything on the backlight circuit.
First, I removed everything from the circuit & short was cleared. And when I prompted to boot, the boot up consumption looked like a booting phone.
So I then replaced:
-Backlight IC
-2 Backlight Diodes
-Backlight Coil
-Large Backlight Capacitor
And the phone booted up with the backlight fully working!
Yes, the customer paid 2x what the phone is worth to get this repaired, but customer wanted their data + wanted a working phone.
One thing to consider when fixing "old phones that are not worth it", customer doesn't always want the latest and greatest phones.
They don't always want to go through the hassle of transferring all their data over to a new phone.
Or learning how to use Face ID.
Or maybe they prefer a home button.
Either case, I offered the customer the solution they wanted & they are happy. 🙌
If you have a Seek Thermal Cam, you're missing out if you don't have a VCC Seek Stand: https://www.vccboardrepairs.com/buy-seek-stand
Injured Gadgets just got these back in stock, so get them while you can!
It can take us a while to build these out sometimes, so they're sometimes out of stock for a while, but we're working towards always having inventory ready to build more as they sell out.
This stand makes using a thermal cam so easy. So much better than any other thermal solution on the market.
It allows you to get real close up (using my Macro Lens), and easily find where the short is coming from.
Plus it's hard free, so you can have your hands free to try to boot the device from DCPS, while having an image that is in focus & not moving around.
You can even record a video through the app, while you inject voltage into the short, so you can go back & see exactly which component was it that was heating up.
Save yourself lots of time by getting a Seek Cam, Stand & Macro Lens! ...
Anyone who is doing game console repairs, knows how many screws you need to remove to access the motherboard.
Especially the PS5, with the 5,000 screws or so.
If you don't already have an electric screwdriver, GET ONE ASAP.
🌟 Cordless Screwdriver with T9 Bit: https://amzn.to/3E5duCj
🌟Extended T9 Bit: https://amzn.to/3c4YJac
It's rechargeable through micro USB and allows you to easily swap the tips out. You can also fold it to be straight or L shape.
Let me know below if you are already using an electric screwdriver 👇👇
Please can you help me with ipad air 2 ( 4G ) display challenge, the battery was plugged in and I tried to fix the lcd and since no display again even with new lcd, I already tried to throw torchlight on the screen to confirm whether back-light problem or display problem. It's confirmed lcd problem
