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Posts: 13 | Thanked: 43 times | Joined on Apr 2015
#9
My light spreader and backlight is *exactly* like shown, but only since baking the board in a reflow oven, to resolder the modem chip that had cracked away (the "no SIM" / "unable to initialise modem" fault). So seemingly, intense heat due to repair work can cause the discolouration, or maybe less heat over a longer period of time?

https://neo900.org/stuff/werner/klig...h-open-top.jpg

As for "prevention", it would be nice if the thing was removable. As well as the camera module, which I also destroyed in the process.
 

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