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[Jessa_the_Professa]

Another win for rule #1

[Jessa_the_Professa]

what is the voltage on cpu reset line--maybe tristar is pulling that line down.

[Jessa_the_Professa]

"short disappeared after I removed PMIC" How did you determine this?

[Jessa_the_Professa]

I don’t remember this video in particular, but a board consuming 110mA is usually the current consumption of a board in recovery mode. It used to be...

[Jessa_the_Professa]

No, these lines are not short. Your problem is where the water went---where is the water?

[Jessa_the_Professa]

Has this been a math mixup all along? How many mA is 0.09A? How many mA is 0.02A?

This phone is behaving like a phone that is autobooting...

[Jessa_the_Professa]

Phoneboard is kind of "emergency use only" for us. Barebones and you never know if what you are missing is just missing from phoneboard or...

[Jessa_the_Professa]

sticker is meaningless. is the board water damaged or not? If so, where?

[Jessa_the_Professa]

To prevent screw ups like this you need to use some kind of magnet mat--not copy paper! We use these: https://store.ipadrehab.com/iPad-Rehab-Ma...

[Jessa_the_Professa]

A1608 tristar can not be substituted for with the any other chip, you have to use A1608. Nothing else is relevant until you get the right chip on t...

[Jessa_the_Professa]

First--did you use the iPad4 1608A1 chip and not the standard 610A3B?
Second--tristar tester can say fail when the problem is in the dock---since...

[Jessa_the_Professa]

you tell me--look in the schematic. Where can you find such a line? Where does it start from and where does it go?

[Jessa_the_Professa]

You need to eliminate variables. Phones don't do weird things--they are predictable and behave the same way every time. If you are getting "now...

[Jessa_the_Professa]

For Business: A phrase I use a lot is "We don't offer a solution for that problem" We only take in repairs that meet a standard--we already...

[Jessa_the_Professa]

Moving chips around is not a viable method of iCloud unlocking. Transferring a CPU takes away the underfill and will make the transferred CPU now susceptible...

[Jessa_the_Professa]

It is almost always easier to get the original board to boot again rather than to swap chips to a receiver board.

Is your goal data recovery...

[Jessa_the_Professa]

I have had tristar kill tigris only once before—always thought it was a fluke. Glad you got it solved!

[Jessa_the_Professa]

Let’s start at the beginning. Why are you swapping the NAND? What is your goal?

[Jessa_the_Professa]

First—rule #1 to rule out charge port. Then I would replace Tigris based on experience. Report back.

[Jessa_the_Professa]

Eliminate variables.
Take the board out of the housing (putting it in the housing would be dead last on your list of order of operations)
...