Problem with iPhones and home button replacements are that they are married to the board which can cause the error 53 code after replacement. If a third-party repair shop replaces the home button and you’re running iOS 9, Apple automatically bricks your phone. Once your iPhone is bricked, there’s no way to unbrick it. This is all pushed as a security issue but the storage for the apple touch id is with a coprocessor and not on the board, icloud, apple database or anything like that. Great in that sense but horrible that 3rd party repair shops are pretty much locked out of doing certain repairs all because of a greedy/poor implemented security function. For hot home buttons, it is a known issue in the Apple community on model 6’s. Many simply recommend a hard reset on the device, I doubt this is your solution but I figured Id add some input into the whole discussion regarding touch id / et al. Thank you Apple for all of your wonderful and innovative designs. /sarcasm/

(graveyard post… i know, sorry) Only tighten mounting screws down enough to make them snug, never over tighten as this can flex the board, damage traces or cause short to ground faults. Also, some of these boards have RAM compatibility issues, always double check the manufactures website to verify that the memory you intend on using is supported by the board. Generally, unsupported RAM may work but can be unstable, entirely unsupported RAM will generally cause a power on - no POST (if powering on at all). This also includes checking your BIOS version and update it to current if required. (!!—never flash for the sake of flashing; if you don’t know what you’re doing you’ll brick your board —!!) Thirdly, reseatting the memory is always good practice as sometimes the contacts are not aligned or properly touching. Finally it can come from the CPU as the clock has to synchronize with the RAM timing/clock. Failing to do so will either render the machine with a power no post or will be highly unstable. If you ever...