Mac Mini Led blinks but wont boot, no chime.Hello guys, I´ve received an mac mini late 2014 A1347 for repair and it wont turn on. Specs are Dual Core i5 2,5Ghz, 8Gb...
Rispondi a "iPhone 5 extreme brightness problem"Sometimes brightness problem (if you excluded the screen factor) may be caused by a faulty filter on the logic board. When you pump the brightness, the Backlight driver IC and Coil act to pump the voltage on the line, thus making the screen brighter. If your screen has the same "mid brightness" even when at maximum manual brightness on the system, the filter maybe close to burning, which causes the voltage to not flow properly, making a "bottlecap" affect, preventing the higher voltages to power the screen. But before fiddling with the logic board, try changing the screen again, because backlight problems tend to be a "0 or 1" problem. It works normally, or dont work at all (on the iphone 5 at least.)
Rispondi a "Why won't my device stay on?"As Davis Said above, mostly a battery Issue... Had this problems with 2 customers 3Ds's (old model) and with mine too. It is a strange problem since New 2Ds XL arent around for more than a year, so maybe its a problem with a bach of their batteries manufacturer...