Jack Graham

91	Reputation
8	Solutions
0	Guides
Member Since 12/01/2017

Questions

iMac No Diagnostic leds lite 12/08/2017
Hey Have an imac i picked up on ebay for a fix up like i did with the imac im typing on right now i digress anyway when i...
White Screen No Apple Logo 12/01/2017
My Macbook air just boots to a white screen no apple logo and when i try to reinstall os none of the Boot key commands...

Answers

Answer to "Why is my ps4 shutting off by itself?" 12/25/2017
It happens because you are overloading your plug with a power strip that has to many things connected and drawing too many amps try an extension cord from another know working outlet
Answer to "How to fix after being submerged in a river?" 12/22/2017
you lucky dog just dry it out like others said take it apart and hairdryer tha SOB
Answer to "I have removed the LED Driver but did I burn the component next to it?" 12/22/2017
the brown stuff is called underfill they use it at the factory so solder doesn't get everywhere i think your fine be careful with cleaning the pads they can break cuz they are held in with glue
Answer to "Display switches off when opened more than 45 degrees" 12/22/2017
This sounds Like a defective Lvds cable. The lvds cable carries the backlight signal and video signal within the cable if there is a loose connection in the cable wiring it will cause the symptoms you are having As a hobby i fix apple computers and i had a problem with a lvds cable that had severed video wires internally. The computer only presented a white screen when turned on no apple logo because it was only showing the backlight and no video signal
Answer to "Randomly shuts down when not connected to an external display." 12/22/2017
If i were you i would do a reflow of the board i had a problem with a mid 2014 imac that was getting no power to the no 1 diagnostic led it would flicker sometimes so i did a reflow in the general area of the LED and it worked. typing on the machine right now
Answer to "Display Power Cable orientation" 12/22/2017
The brass goes up when plugging in
Answer to "iMac No Diagnostic leds lite" 12/21/2017
Update: got the mac working Got the psu in with no change so i pulled up the schematic and probed the output of the psu 12v still no led no 1 so i found the led on the schematic and it said 3.3v on positive side of led (3.3 is the trickle voltage from second smaller connector on psu) probed led no 3.3v (i noticed that the led would flicker sometimes so i thought loose connection at a solder joint) when i applied pressure to led it would flicker more often) so i reflowed the led area and the MAC TURNED ON i remeasured the led and got 1.2 v when its supposed to be 3.3v checked a cap right next to it and got 3.3v on one side and 1.2 on the side going to the led so i think the heat reformed the cap and fixed a bad solder joint FYI IM WRITING THIS ON THE MAC IN QUESTION
Answer to "White Screen No Apple Logo" 12/11/2017
Got it Diagnosed turns out the lvds cable had some broken wires where the hinge on this machine was broken with the bad lvds cable CONNECTED TO THE LOGIC BOARD i was getting a white screen with no apple logo and the macbook air would not display anything other than a white screen even with trying to boot to a usb holding option. THE FIX: i disconnected the lvds cable from the logic board because even when i tried to use an external monitor nothing would happen with it still connected ( wires being broken must have grounded the video signal or broken a feedback loop?) as soon as i disconnected the lvds cable from the logic board and tried an external monitor again i got a BLINKING FLASHING FOLDER ON THE EXTERNAL MONITOR SUCCESS!!! i was even able to boot to a usb (in order to do this on a macbook air you must disconnect the hard drive cable from the logic board) I HOPE THIS HELPS SOMEONE