i have a motherboard a1707 820-00928-a this board is 5v in stuck and restart again and again all ldo is present ppbus_g3h is 0v no short pp3v3_g3h is 3.3v smc_bc_acok is 3.3v but problem is all voltage is not stable like pp3v3_g3h voltage jumps 3.3v and 2.1v sometime 1.5v and dc also showing 5v then 0v then 2.5v not fixed
This board was working a day before, the customer came to install the battery, after installing the battery it started working but the next day it is not working
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-
Yesterday, 08:56 AM
-
Hello.
I am dealing with a Philips TV, 43pus7505 and is stuck on boot loop.
So I ordered a used CPU board, and now I have wired picture.
I think the problem lies in display option code. According to SM, the command for setting
display code is 062598 + MENU + 032 (032 is written on a label on back of a TV).
But as soon I press the menu button TV jumps in menu. Can someone please tell me what I am doing wrong,
or can I manually edit option code in SAM.10-07-2024, 02:09 AM -
Hello Everybody,
I have a cracked screen and want to fix it. Usually, TrueTone will be gone as long as one does not prune open the screen and exchange only the LCD. However, I have seen the following Youtube video [url]https://www.youtube.com/watch?v=MBNqhp6p_ZM[/url], [B]Solve MacBook M1 Pro screen true tone issue [/B]from the channel [URL="https://www.youtube.com/@masterliu1892"]Master Liu[/URL], where only two chips called "display control chip" and "code chip" are swapped over to the new screen. I know, it is for the MacBookPro version. Though, I...Yesterday, 02:51 PM -
This macbook came in for a no power complaint. It is stuck on 5V 0A. Serial is FVFDQ2A9Q05F, board is 820-02020-A. I've been trying to check if it is DFU, but I can't get it to come up in Apple Configurator. There is some voltage present on the board, for example CR850:1 has 12.32V. I do not appear to have PP1V_25_S2 anywhere. Any ideas?10-04-2024, 08:25 AM
-
Hi, I was hoping osmeone could help me with this.
I have a Lenovo Thinkbook G2 I bought on ebay and I was hoping to enable vrtualization to run WSL but there is a BIOS password lock on it.
The serial number is PF37TGLV and the MTM is 20YN0000CD. I downloaded and backed up the BIOS using Universal BIOS Backup Toolkit 2.0
I have attached a copy here:
Please let me know if anything else is needed....10-07-2024, 03:03 PM -
I am new to hot air soldering. I need to remove one chip from the board. I have a hot air solder and I set the temperature to 350°C. I slowly started heating the chip, but the solder didn't melt. I heated it for about 5 minutes, but the solder still wouldn't melt. I increased the temperature to 450˚C and still nothing. After a while, the board started to change color, but the solder still didn't melt.
Fortunately, I'm testing it on old network switches to see how it works.
What am I doing wrong?
I've seen a lot of videos on youtube and everyone got the solder melted and the...10-08-2024, 10:55 AM -
Hello!
Help me please idenity the marked components:Yesterday, 05:46 PM -
Hello everybody:
Let me put all the laptop's info before describing the problem:
BRAND: MSI
MODEL No.: MS-17E7
SKU: GL75 Leopard 10SEK-261XES-BB71075H16GXXDXX
MoBo: MS-17E71 VER. 1.0
This laptop arrived to fix the broken left hinge, due to a hit. The hinge was repaired, and when I went to check it out, everything worked well, but I observed certain artifacts (mainly random lines) in the screen.So I decided to remove the screen bezel again, and I saw certain damage to the main LCD harness.
This time I also observed that the right...Yesterday, 04:53 PM -
Toshiba Satellite L50T-A445
PAKLNV
SERIAL NO. 1E207784U
no motherboard number only REV 1.03
CHIP: W25Q64BV
The dump file is attached...Yesterday, 11:03 AM -
I am trying to fix this tv that has image and sound but no backlight. Replaced all led strips and each strip turns on using a led tester but do not get any backlight when the tv turns on.
I disconnected the main board from the PS but still no backlight.
Looking at previous threads, nothing is jumping out at me and I'm stumped.
Here are the voltage measurements:
ON STATE
CNM803 on PSU from Main
Pin 1 A13v - 13.09v
Pin 2 OD_UD - 3.3v
Pin 3 A13v - 13.09v
Pin 4 BLU_PWM - 1.6v
Pin 5 A13v...Yesterday, 07:28 AM
-
Hello,
can some clear me for me?
Model : 15fq2045nt
Part no : 2N2N8EA
Serial : 5CD048C6CS
Board : DA0P5HMB8E0 REV : E
Thank you very much.
[ATTACH]n3480279[/ATTACH]...Yesterday, 10:58 AM -
I am trying to fix this tv that has image and sound but no backlight. Replaced all led strips and each strip turns on using a led tester but do not get any backlight when the tv turns on.
I disconnected the main board from the PS but still no backlight.
Looking at previous threads, nothing is jumping out at me and I'm stumped.
Here are the voltage measurements:
ON STATE
CNM803 on PSU from Main
Pin 1 A13v - 13.09v
Pin 2 OD_UD - 3.3v
Pin 3 A13v - 13.09v
Pin 4 BLU_PWM - 1.6v
Pin 5 A13v...Yesterday, 07:28 AM -
Hello.
I am dealing with a Philips TV, 43pus7505 and is stuck on boot loop.
So I ordered a used CPU board, and now I have wired picture.
I think the problem lies in display option code. According to SM, the command for setting
display code is 062598 + MENU + 032 (032 is written on a label on back of a TV).
But as soon I press the menu button TV jumps in menu. Can someone please tell me what I am doing wrong,
or can I manually edit option code in SAM.10-07-2024, 02:09 AM -
Hello Everybody,
I have a cracked screen and want to fix it. Usually, TrueTone will be gone as long as one does not prune open the screen and exchange only the LCD. However, I have seen the following Youtube video [url]https://www.youtube.com/watch?v=MBNqhp6p_ZM[/url], [B]Solve MacBook M1 Pro screen true tone issue [/B]from the channel [URL="https://www.youtube.com/@masterliu1892"]Master Liu[/URL], where only two chips called "display control chip" and "code chip" are swapped over to the new screen. I know, it is for the MacBookPro version. Though, I...Yesterday, 02:51 PM -
Could you help me... I have a Samsung UN55MU6103F with the following problem, dead TV, I disconnect the main power supply and the leds light up. I know it is a problem in the firmware in the IC SPI Flash W25Q40CL (IC1604)
The model of my TV is
UN55MU6103F
Power supply BN44-00807A
Main Board BN41-02568B
Could you help me to repair the dump please. Thank you.
I leave my backup of the dump and a little extra, it is the schematic of the power source, it can be useful to someone. Regards
Me podrian ayudar... tengo un...01-31-2023, 12:30 PM -
I am new to hot air soldering. I need to remove one chip from the board. I have a hot air solder and I set the temperature to 350°C. I slowly started heating the chip, but the solder didn't melt. I heated it for about 5 minutes, but the solder still wouldn't melt. I increased the temperature to 450˚C and still nothing. After a while, the board started to change color, but the solder still didn't melt.
Fortunately, I'm testing it on old network switches to see how it works.
What am I doing wrong?
I've seen a lot of videos on youtube and everyone got the solder melted and the...10-08-2024, 10:55 AM -
Toshiba Satellite L50T-A445
PAKLNV
SERIAL NO. 1E207784U
no motherboard number only REV 1.03
CHIP: W25Q64BV
The dump file is attached...Yesterday, 11:03 AM -
i have a motherboard a1707 820-00928-a this board is 5v in stuck and restart again and again all ldo is present ppbus_g3h is 0v no short pp3v3_g3h is 3.3v smc_bc_acok is 3.3v but problem is all voltage is not stable like pp3v3_g3h voltage jumps 3.3v and 2.1v sometime 1.5v and dc also showing 5v then 0v then 2.5v not fixed
This board was working a day before, the customer came to install the battery, after installing the battery it started working but the next day it is not workingYesterday, 08:56 AM -
Hello, this is all new to me. Hoping for some help.
Uploaded the firmware backup, Hoping I did this right lol
Thanks for the help
...
10-04-2024, 01:58 PM -
Hi:
This TV turns on and it can show picture for some seconds (sometimes minutes) then picture freezes and fades away. What I've seen so far is that the T-Con (BN41-021101A) starts with three leds on, but as soon as led3 turns off, just 12V and 3.3V (the bold ones) remains in the PCB but all others disappear.
If I remove the 2 bellow ribbons, LED2 never turns on. I was trying to look for the "T-CON ready" pin to shorten with 3.3V and then test just the TCON without the panel (haven't found it yet)
Not sure how to proceed here..............how can...Yesterday, 07:01 AM