Hi,
I bought a faulty A2289 for myself.
The USB-C meter was stuck on 5V.
After remove the board the U3100 was corroded and also around but quite light.
So I clean the U3100 and see R2834 in bad condition and its value was not good.
I replace it and not the USB-C meter shows 20V, the fan is spinning, CPU is hot but nothing else no picture.
The USB-C meters shows a very low current with all connected. It starts at 20v few mA and then stays at 20v 100mA.
How mush current the board is supposed to take without nothing...
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by sauceToday, 12:20 AM
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by Jedi134Hi I have inherited the above desktop scanner, all seems to work correctly but there is no sound output. The only sound I do get from the speaker is the beep confirmation when you press a key. No output from the headphone socket either. Not even radio static with squelch fully turned down, tried a reset by holding 2, 9, and hold buttons but still no sound, does anyone have any experience with these scanners, thanks.
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Channel: Troubleshooting Audio Equipment
05-13-2024, 04:12 AM -
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by tuankietkietWhen plugged in (no battery installed), the battery light on the motherboard lights up and then turn off. When powering on, the same and light and the power button also light up in a white color but no output on the display. It stayed like that for a few seconds before shutting down. I also seem to ruined a connector that connects to the WLAN, 2 USB and audio board, the same board also have a melted 2062A IC. I will post pictures in the reply section05-11-2024, 04:40 AM
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by trepachkaHello, I have this HP Pavilion X360 14-ek0033dx laptop with bios lock. I am unable to change drive boot order because of it.
Please, help me remove it.
Model: 14-ek0033dx
S/N# 8CG2272ZB5
ProdID 67W83UA#ABA
Original BIOS file is attached. Thank you....-
Channel: BIOS Requests ONLY!
Yesterday, 08:58 PM -
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by elecrepcould anyone help me with Asus gaming laptop tmt yaml 19 94v-0 schematic + boardview.
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Channel: Schematic Requests ONLY!
Yesterday, 04:40 PM -
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by sauceHi,
I am trying to help someone to repair a mac mini A1993 820-00939.
The mac mini won't power on.
Voltages on U7800 are all good except
PP1V2_PRIM 0v
PP1V_PRIM 0v
PP5V_G3S is missing too
Someone has the power on sequence of this ?
Thank you on advance.
Eric...04-24-2024, 12:53 AM -
by abajorI was wondering if there is a knowledge base on troubleshooting HDD failures and when it might be viable to try certain repair/recovery techniques.
I recently got a WD20EARS 2TB Drive from a customer in hopes of retrieving data. The drive reads as zero size, I can't hear any head activity but it does appear the platter is spinning I can feel some gyroscopic action picking up the drive.
As a shot it the dark I bought a donor board and swapped the rom chip. Same issue zero byte drive.
I'm assuming that the armature is no longer functional internally so no data can...-
Channel: General Computer & Tech Discussion
Yesterday, 08:35 PM -
-
by petehall347i am now being pushed for a list of the best tools for the right price to allow me to rebuild 80v battery packs and the like .someone i do work for has threatened to buy me the kit . so things like automatic cell testing kit with many bays . tab welder and suchlike to enable me to get right on it . and supplies that will be needed like new tabs and single cells .05-17-2024, 05:09 PM
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by PITERPENYHello ! The system installs but cannot boot and the screen of death appears.
macbook works in safe mode
after pressing the power button, the system starts to boot after 27 seconds, which is a very long time1 PhotoYesterday, 06:32 PM -
by nike486dxLong story short: bought a 8” generic windows tablet (based on Atom x5-z8350, bios chip model is Gigadevice 25LQ64CVIG, uefi vendor is AMI Aptio) for some experiments, and it came with bios lock! I dont have any decent 1.8v programmers at hand nor do i have knowledge in modding uefi firmware, so decided to play safe: dumped the bios with AFU utility, which i attach here. I am hoping to get it unlocked. Also included hwinfo screenshots with general information, the board itself looks generic without any markings.
...2 Photos-
Channel: BIOS Requests ONLY!
Yesterday, 04:27 PM -
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by trepachkaHello, I have this HP Pavilion X360 14-ek0033dx laptop with bios lock. I am unable to change drive boot order because of it.
Please, help me remove it.
Model: 14-ek0033dx
S/N# 8CG2272ZB5
ProdID 67W83UA#ABA
Original BIOS file is attached. Thank you....-
Channel: BIOS Requests ONLY!
Yesterday, 08:58 PM -
-
by sauceHi,
I bought a faulty A2289 for myself.
The USB-C meter was stuck on 5V.
After remove the board the U3100 was corroded and also around but quite light.
So I clean the U3100 and see R2834 in bad condition and its value was not good.
I replace it and not the USB-C meter shows 20V, the fan is spinning, CPU is hot but nothing else no picture.
The USB-C meters shows a very low current with all connected. It starts at 20v few mA and then stays at 20v 100mA.
How mush current the board is supposed to take without nothing...Today, 12:20 AM -
by AlexVGHi,
I have Microwave BOSCH CFA634
It runs, but after 10 -15 seconds stops working.
Sometimes it shows error E1006.
I can't find this error explication.
Some people say it's communications error between main and display module.
Probably somebody has an experience with this issue?
Can you help me please?
Thank you an advance....05-17-2024, 05:17 PM -
by petehall347i am now being pushed for a list of the best tools for the right price to allow me to rebuild 80v battery packs and the like .someone i do work for has threatened to buy me the kit . so things like automatic cell testing kit with many bays . tab welder and suchlike to enable me to get right on it . and supplies that will be needed like new tabs and single cells .05-17-2024, 05:09 PM
-
by Arc717I am trying to downgrade my bios on my Alienware so I can undervolt & overclock my CPU, and overclock my ram. I need to get to bios 1.2.2 for this. Dell doesn't allow downgrades, and their bios file is an exe compiled in c++, so I can't decompile it easily. I am wondering if I can flash the bios manually using a usb flasher. I would like to know if this is possible, and if so, where the bios chip would be. I know flashers are pretty cheap and the bios chip is 8-pin. There are two of these chips only when I open the back panel of the laptop. I'm not sure if there are any on the other side of...05-17-2024, 03:34 PM
-
by PITERPENYHello ! The system installs but cannot boot and the screen of death appears.
macbook works in safe mode
after pressing the power button, the system starts to boot after 27 seconds, which is a very long time1 PhotoYesterday, 06:32 PM -
by madjid911Hi friends,
I have a macbook pro A1706 820-00923-A that won't start no signs of life, no liquid, checking the voltages I found PP3V3_S5 was shorted, I removed all the processor coils, but when I 'injects a voltage it is the processor which reacts, can you confirm to me that this is definitely coming from there please?
I have 20V on the usb-c connector, and 13v stable on ppbus_g3h.
I saw that a track had burned out on PPVIN_2V7NAND_LB after resistor R9350
I injected voltage on L7660 pin 1 in short but only the processor reacts
Thanks for your...Yesterday, 12:33 PM -
by copeHi everyone,
I have been working on a no power issue with my personal ASUS gaming laptop. It went dead a few months ago.
Some history:
Since then, I've found a blown mosfet on the GPU line which I replaced. It started up without a battery, then when I added the battery back it wouldn't start up again.
As a result, there were some blown components around the BQ chip. (The BQ chip itself - BQ24780S, the low side battery mosfet (shorted), and a resistor -> all replaced)
Now, with a new battery the system will start up and run off...05-13-2024, 09:40 AM -
by yop_FRHello,
I have 2 laptops E14 and one E15 with the same problem: don't turn on (no led) I suspect the bios and I have buy an CH341A.
But now I need a new bios...
I give below the older bios, can you check it please, or give a valid version of BIOS?
I will be very grateful to you
At first, this is the numbs of a e14: 20TA-00EWFR
with a bios chip: Gigadevice GD25Q80
Motherboard: GE4B0/GE5B0 NM-D011
thanks...-
Channel: BIOS Requests ONLY!
05-17-2024, 02:58 PM -
-
by abajorI was wondering if there is a knowledge base on troubleshooting HDD failures and when it might be viable to try certain repair/recovery techniques.
I recently got a WD20EARS 2TB Drive from a customer in hopes of retrieving data. The drive reads as zero size, I can't hear any head activity but it does appear the platter is spinning I can feel some gyroscopic action picking up the drive.
As a shot it the dark I bought a donor board and swapped the rom chip. Same issue zero byte drive.
I'm assuming that the armature is no longer functional internally so no data can...-
Channel: General Computer & Tech Discussion
Yesterday, 08:35 PM -