Search results

are awas water damaaged, had to run cable between R9723 and chip,

[No message]

i soldered a cable between 1 and 3 pin of Q9807, now the reading for U 9701: 1 0 2 0 3 12 4 5 5 4.3 6 0 7 0 8 4 9 0 10 0.18 11 0.25 12 0.22 13 0 14 0 15 0 16...

just removed mosfet and tested rail short still there

I have removed cpu from main board is on the socket and short is still on this line, this doesn't seems to be a cpu line

i got new cable and screen, replaced the lcd connector on the board, there is picture but no backlight replaced the backlight chip too i think the issue could be the SMC Q9807 pin 2 is 3.3V pin 5 is 0V Q9806 pin 3 is 12V which i think should be less than 12V to open, its a PNP transistor...

thanks for response. multimeter shows me 002 , on MOSFET with I disconnect from circuit by removing one coil side is 12V when coil connected full short and 0V. I was tried to find some mosfet connected to this rail found one, removed and is same. I will try find schematic with will be similar.

Hi, Do anyone have a schematic diagram for this iMac? main board 820-00134-A. We got one with is dead checked voltage from power supply 12V ok 3.3V ok, no probe lights on board, 3,3V on power button ok. what I found was faulty bios battery and second is short on 12 V line on this partly removed...

backlght chip area bit water damaged, no too bad, i replaced the chip, the lcd connector, fuse, the laptop works with ext monitor. The lcd is not recognised, Q9807 2. pin is high 3.3V which means that the backlight is not enabled by SMC, so the quiestion why it doesn recognise the LCD?

if i reatach the ssd i can start to copy again.... but it will disappear after 5 mins again, but only if i copy, if i dont touch it it wont disappear

actually i found a soultion, in terminal, type ditto , then the folder from and to, and works, but unfortunately the SSD disappears after like 5 mins of copying, but i was able to that the destination folder was growing with files

What is the best way to make data backup from a macbook air SSD, which is working, it has like 45gb files, and it looks like most them are good, readable, but there is maybe 1000 bad files, like music or whatever files, so probably i can copy like 95% of all the data, but the finder always stops...

Does any one have iphone 8 schematics and board view?

yes its 21 ohm now, but it was 21ohm before, that was the first thing i checked, than i reballed and replaced the SMC, than the resistor went out, i replaced it, sothat part is ok now. what i found is L5001, the pin after it was corroded, so the 3.4V did not come trough, it looks like that is...

on u1950 pin 1 and 3 the 3.3V comes up too for 1 sec, so evey voltage is ok for 1 sec

i replaced r7121, now its 10 ohm both resistors, but same issue also i checked them before, even in the original post i mentioned them, they were both good, r7121 burnt later during diagnosis

22 hours ago Check resistance between pìns 17/18 and 27/28 at U7100. Also post voltage for pins 9 & 15. so.. resistance between pìns 17/18 3.4ohm resistance between pìns 27/28 174ohm voltage for pins 9 & 15., both 0V g3h is stable 8.58V, i have 3.3V 3.4V, green light on the charger

u7100 18/18 3.4ohm

u7100 27/28 pin resistance 174ohm

PPBUS with only charger is stable 8.58V