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[Jessa_the_Professa]

It is possible the XR uses a different tigris than iPhone 8/8p/X--I don't think there is a schematic out for XR, and we have never had a case of XR that...

[Jessa_the_Professa]

What ic is it--and what called it to your attention? How have you determined that it is a failure point?

[Jessa_the_Professa]

What is the identity of the chip that you intend to replace, and why are you replacing it?

[Jessa_the_Professa]

This is a picture of tigris 2 overlaid on top of some other chip that I don't recognize.

[Jessa_the_Professa]

If you have a short, then you must use short detection strategies to find and eliminate the cause of the short. A bad filter can't possibly cause a short...

[Jessa_the_Professa]

This could be the pin--think of the u-shaped structure of the pin. Push the plastic behind the pin to squeeze it back into position. If not the pin,...

[Jessa_the_Professa]

When you have a potential short, you want to use your multimeter---avoid "see hot, replace hot" technique---that will make the picture of the...

[Jessa_the_Professa]

Let's talk about order of operations. How important is replacing that cap in the grand scheme of this phone ever working again? Pretty far down or...

[Jessa_the_Professa]

I would start by using diode mode in the connector for the fcam assembly paying attention to any lines with PROX in the name. Compare to known good,...

[Jessa_the_Professa]

You always compare to known good, or ask a friend, keep a database, find some limited diode mode readings in zxw, use iBridge, or make an assumption....

[Jessa_the_Professa]

I rarely change the nozzle--I use something in the 6-8mm range for nearly everything. I will adapt my style based on whatever nozzle is on the machine....

[Jessa_the_Professa]

Feel free to post a picture "much larger than my last order" ???
Tigris 2 is a square chip that is noticeable because it has a "missing...

[Jessa_the_Professa]

You're replacing tigris2, which is U3300 on the XR schematic. Tigris 2 chip is the one that looks like it has a missing ball in one spot.

[Jessa_the_Professa]

Rule #1--you don't have a board problem until you know you don't have a parts problem. You need to put the board with a KNOWN GOOD iPhone X screen,...

[Jessa_the_Professa]

Inject 4v onto boost and see what gets hot

[Jessa_the_Professa]

I think you should try the latest version of premium aftermarket screens. Most customers can not distinguish modern aftermarket screens from OEM. Try...

[Jessa_the_Professa]

It is possible that it could be something else, but if the device had service before and now doesnt and it got audio ic----the next step is to reball...

[Jessa_the_Professa]

In what way are aftermarket screens lacking in comparison to OEM? In the past aftermarket was clearly inferior, but is that really true today? If so---what...

[Jessa_the_Professa]

You recognize "these phones" when you have half touch when you put an OEM screen on them.

[Jessa_the_Professa]

See if the problem goes away with aftermarket screens