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.
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-
Yesterday, 02:17 AM
-
Hello all,
I just finished flashing a new bios on an HP EliteBook 650 G10, and everything works except wifi and bluetooth. After installing the necessary drivers, the wireless card reports code 43 in windows. When restarting the computer, i get a code 10 (could not start) on the wireless card in device manager. I suspect that this could be a mac address issue, but I don't know what address to set it to in the bios, or if this is even related to the problem at all. Any insight on this would be appreciated.Today, 04:05 PM -
Going to replace op-amps in a guitar amp jcr072d
so TI versions have suffix D IP etc. There didn’t seem to be an explanation of these anywhere. I think they indicate the physical pin characteristics but what do they represent- anyone have a list.Yesterday, 03:06 PM -
Hi all!
I'm trying to troubleshoot a Microsoft Surface Pro (5th gen) model 1796 that won't power on. Motherboard model is M1007506-015. My priority is retrieving data, but the SSD is integrated so it looks like if I can't repair it it'll need to go to a data recovery company. I've done a little basic board repair before, but nothing this advanced until now. So please forgive my ignorance in advance. 😅
I found the boardview for this laptop in the forums here, and am able to open it on my PC with FlexBV.
[URL]https://www.badcaps.net/forum/troubleshooting-hardware-devices-and-electronics-theory/troubleshooting-laptops-tablets-and-mobile-devices/schematic-requests-only/102470-need-schematic-for-microsoft-surface-5-pro-1796-calgary[/URL]...Yesterday, 02:01 PM -
Hi,
I have this laptop HP x360 1030 G2.
Battery is charging well, the laptop powers on the CPU gets warm but nothing on the internal screen or hdmi.
The fan is spinning at full speed.
Any idea ?
I just asked for a schematic i cannot find it.Today, 05:25 AM -
Hi,
I am looking for the schematic of this motherboard or this component, PQB4 reference (Unable to read the text beyond P5)
Also, if someone with experience could tell me, why would this component burn in order to avoid this happening again?
Thank you.Today, 02:38 PM -
Goodnight
I need PWM ASP1000RM datasheet,layout , any image.
thanks for help Today, 02:33 PM -
Hi all, I have a Lenovo Y40-80 that I am trying to remove the Admin password for. There is a password screen that comes up immediately that I can input a user password for (Pic 3) and this will allow me access to Windows or the BIOS, but a majority of the options are grayed out in the BIOS (Pic 4).
I have attached a picture of my overall chassis and a close up of the chip that I have read (using CH341A and AsProgrammer). I output two files from the chip and compared them (fc /b) and they were the same. I patched the first file (the file felt like it processed too quickly) and then...Today, 01:45 PM -
HP Pro x2 612 G1 Tablet
Product
N3E90EC
Serial
5CG5285HLM
kk-6050a2627701-mb-a02
The BIOS needs to be fixed. Thanks in advance, friends...Today, 01:43 PM -
Looking for a schematic for this amp to help solve no output problem.
Power input ok no shorts, signal tracing for me is why I could do with a schematic.
thanks in advance...05-25-2024, 02:31 PM
-
Hi all,
Model: HP Pavilion 14-ce3010nh 8BV97EA
Board number: DAG7ALMB8C0 - G7AL REV C
Issue: I have an HP Pavilion 14-ce3010nh 8BV97EA laptop. When plugged into the charger, it turns on, but there is no display, the fans do not run, and the processor gets slightly warm. Unfortunately, I haven't been able to figure out what the problem is. I've reflashed the BIOS twice without any success. No post. Already tried out with another ram stick with no luck
I measured the voltage with the HP turned on in red, and I measured their resistance with the HP turned off in green....Today, 04:10 AM -
Hi,
I have this laptop HP x360 1030 G2.
Battery is charging well, the laptop powers on the CPU gets warm but nothing on the internal screen or hdmi.
The fan is spinning at full speed.
Any idea ?
I just asked for a schematic i cannot find it.Today, 05:25 AM -
Hello, I'm trying to remove the password from an HP Elitebook 650 G10. It's motherboard has two chips, a 32mb spi (W25Q256JVEN) and 32mb ec (GD25B256EYIG). I have created a dump of each, but don't know which one(s) to patch. Could someone point me in the right direction or just patch it for me?...Yesterday, 06:29 PM
-
Hello all,
I just finished flashing a new bios on an HP EliteBook 650 G10, and everything works except wifi and bluetooth. After installing the necessary drivers, the wireless card reports code 43 in windows. When restarting the computer, i get a code 10 (could not start) on the wireless card in device manager. I suspect that this could be a mac address issue, but I don't know what address to set it to in the bios, or if this is even related to the problem at all. Any insight on this would be appreciated.Today, 04:05 PM -
Hi,
I am looking for the schematic of this motherboard or this component, PQB4 reference (Unable to read the text beyond P5)
Also, if someone with experience could tell me, why would this component burn in order to avoid this happening again?
Thank you.Today, 02:38 PM -
Goodnight
I need PWM ASP1000RM datasheet,layout , any image.
thanks for help Today, 02:33 PM -
Going to replace op-amps in a guitar amp jcr072d
so TI versions have suffix D IP etc. There didn’t seem to be an explanation of these anywhere. I think they indicate the physical pin characteristics but what do they represent- anyone have a list.Yesterday, 03:06 PM -
Hi all, I have a Lenovo Y40-80 that I am trying to remove the Admin password for. There is a password screen that comes up immediately that I can input a user password for (Pic 3) and this will allow me access to Windows or the BIOS, but a majority of the options are grayed out in the BIOS (Pic 4).
I have attached a picture of my overall chassis and a close up of the chip that I have read (using CH341A and AsProgrammer). I output two files from the chip and compared them (fc /b) and they were the same. I patched the first file (the file felt like it processed too quickly) and then...Today, 01:45 PM -
HP Pro x2 612 G1 Tablet
Product
N3E90EC
Serial
5CG5285HLM
kk-6050a2627701-mb-a02
The BIOS needs to be fixed. Thanks in advance, friends...Today, 01:43 PM -
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.Yesterday, 02:17 AM