thanks guys I laughed, in fact Q9706 was damaged. I changed it and the backlight came back!!! Thanks a lot, but now I noticed that when I close the display the backlight does not turn off. the display always stays on even when closed.
What could it be?
dclass-pro
Senior Member
Last Activity: 11-04-2024, 09:27 AM
Joined: 12-14-2022
Location: Lecce
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so do you recommend me to change Q9706?Leave a comment:
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[B]ALL_SYS_PWRGD[/B] = 3.3V[B]ALL_SYS_PWRGD[/B] = 3.3VLeave a comment:
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R0910 0v-0v
r9715 BKL_EN 0.4v
I2C_BKL_1_SCL ; 3.3v
I2C_BKL_1_SDA ; 3.3v
LCD_BKLT_PWM ; 0.4vLeave a comment:
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I made a mistake in checking, the image is there and the backlight is missing, in fact I see the user at login if I put the flash on the screen... what can I check?Leave a comment:
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Unfortunately I don't see any image on the displayLeave a comment:
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I followed this guide and also tried to change U9701 but I have no changes.
On the D9701 diode I always have 0v on both sidesLeave a comment:
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No display a1278 820-3115-B
Hi guys, I have this macbook a1278 which doesn't have any image on the display, but when I turn it on I hear the chime.
I found the L9008 choke open and reset it.
When I turn on the macbook I have about 3v on pins 3 and 4 of the display so everything is ok but I still don't have the image.
On the backligt pin 21 and 22 I have 0v but the fuses are all ok.
What can I check?
I tried another display from a macbook a1278 but from the previous year and it still doesn't work. -
HP 440 G2 no power after short in flat lcd
Hi all guys, I need your help. On a HP 440 G2 - LA-B181P laptop I was changing the speakers and the pc worked fine everything ok.
After closing it all with all the screws I realized that it would no longer turn on. I opened it and found that the flat cable of the LCD was shorted. I ordered a new flat but the motherboard still won't turn on, as soon as I connect the power supply the connector LED always flashes and the power button stays on.
I tried to check the voltages and the 3v and 5v are there, on the battery pin (with no battery connected) I have about 2v.
I tried to... -
Re: Macbook A1278 no charge
I confirm that on both sides of F7040 I have 12.94VLeave a comment:
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Re: Macbook A1278 no charge
PP3V42_G3H voltaje - 3.4V
voltaje on pin 14 of U7000 sometimes it's 0v and sometimes it's 3.3v
SMC_RESET_L 3,4V
How can I check if the DCIN connector is working?Leave a comment:
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Macbook A1278 no charge
Hi guys, I have this macbook with 820-2936-b logic board that only turns on on battery.
I tried changing the charging connector the SMC controller and the cairca ic but it still doesn't work. When I plug in the magsafe I have no light, as soon as I plug it in with no battery the mac won't turn on (usually all turn on).
I did the various checks and only with the charger connected to the U700 pin I have:
pin2 - 16V
pin3 - 3.8V
pin19- 5V
pin14 - 3.3v
PPBUSG3H have 3.4V
absorption with bench power supply 0.07A
do you have any ... -
Re: Hp DAOP5FMB6A0 blink caps/lock problem
hi guys i still have the notebook stuck here, can you help me please?Leave a comment:
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Re: Hp DAOP5FMB6A0 blink caps/lock problem
hello I checked, no it is not placed near the PCHLeave a comment:
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Hp DAOP5FMB6A0 blink caps/lock problem
Hi guys, I have an HP model 15s-eq1040nl main DAOP5FMB6A0 REV:A with a caps/lock 5 long 3 short led flashing problem, I tried to remove the battery and program a new bios and when I restarted it immediately worked correctly, the pc turned on and loaded the operating system.
As soon as I turned off the pc and connected the battery, the problem reappeared... caps/lock 5 long 3 short led flashing again!
the battery was dead, i charged it and it works fine, but the pc won't turn on again.
What do you recommend me? Do I have to redo the bios or is there anything else to check?... -
Re: Dell Vostro 3500 No Power but have 3V and 5V
thanks for the answer, I found a diagram of a DELL that has the same ISL95522 charger and I verified that on pin 19 ACIN_CHG I have 0V, unfortunately without the original diagram it is difficult because the components do not match. I enclose the diagram of the dell that mounts the same charger......Leave a comment:
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Dell Vostro 3500 No Power but have 3V and 5V
Hi guys, I have a DELL Vostro 3000 series laptop that does not turn on, when I press the power button the orange LED near the dc in connector lights up for a moment but nothing happens, it does not start.
The 3.3v is present, the 5V is present, I changed the 2 bios and the same problem... what do you recommend?
The main code is LA-K032P, I haven't found any diagrams and boardviews and the battery won't be charged.
On the power button I have 3v but I don't understand where to check... -
Re: iMac A1311 no USB port and displayport
Thanks so much for all the pointers but none of them worked. I need help repairing the motherboardLeave a comment:
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Re: iMac A1311 no USB port and displayport
hello i checked the link, but they ask for schematic and boardview... i have everything i want help on the repair...Leave a comment:
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