Hi everyone,
I've got a Lenovo Legion 5 15IAH7 with no post/no boot issue.
The mainboard is a NM-E241 Rev 1.0
Now I am searching for the BIOS chip so I can reflash it.
But I have some difficulties to identify the correct chip. The schemantics somehow are not really helpful for me (I am a beginner with Laptop schemantics)
I found 3 Winson chips and one GigaDevice chip as you can see on the screenshots.
My guess its the W25Q128JVSIN (UB3) because it is the biggest from all.
I attached the pages of the schemantics from the...
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-
Today, 01:31 PM
-
Hello, I would like you to help me with this bios that is blocked, it works completely, I have not found a file compatible with my logic card, I programmed a bios but it did not have sound nor did the graphics card work.
ASUS
RogStrix
G513RM
Board: 6050a3348804-mb-a01
It is locked, can you help me unlock it please and give me some tutorial or post, I would like to learn how to unlock it myself.
Sorry for my English....Today, 04:15 PM -
Hi all , thanks for having me & I think this has been asked before but my case seems a bit odd.
I have a MacBook Pro , board 820-2915a and it turns on , chimes etc etc , keyboard lights up, fans spins , can turn caps lock on/off but screen is dead.
Iv tried the resets , shine torch through back logo , nothing , it seems the screen has no power. If I plug charger , it charges but if I disconnect battery it displays green light but won't turn on. Iv tried screen on with another board & it works & seems I'm not getting any voltage at pin 2 , next to ground pin .
is this...Today, 04:09 PM -
I'm fixing a board that turns on, but stops right at the beginning, it stays in hibernation with the light on.
I made these voltage measurements PPBUS_G3H=12.61V - SMC_PM_G2_EN=3.3V - PP5V_S3_AUDIO=5V - all_sys pwrgd=3.3V.
Anyone with experience in this problem who can help me?Today, 03:25 PM -
Hello everyone,
I have an ASUS Vivobook 14 OLED M3401QA which is not posting. Currently when plugged into power/turned on the power indicator will illuminate and the battery indicator will flash white roughly once every 3 seconds. Leading up to this it would sometimes turn on and then other times not turn on, furthermore it also showed a screen saying "new cpu installed, fTPM/PSP NV corrupted or fTPM/PSP NV structure changed" and then a screen telling me to recover the bios however it is no longer even posting at this stage.
The diagnostics steps I have attempted...05-25-2024, 02:34 PM -
Hello everyone,
The operating system often hangs after any graphics operation like scroll/zoom/menu open/button click. It is the same after swapping all parts (CPUs: dual Opteron 2216 or 8435, RAM: 8x1GB or 8x4GB, power supply : 800W or 1000W, graphics card : original Quadro FX 3500 replaced with GeForce 7300 LE to decrease power) one at a time, and trying several operating systems (Windows 7/10, Linux, FreeBSD; 32 and 64 bit versions of all of them). But if the motherboard has been sleeping for months/years, the first few minutes are more stable before it warms up. This seems to come with...Yesterday, 10:20 AM -
hello
I am looking for two ics on this mb:
1st marked 947 and secound sot23-5 marked 5af8b
thanks and regards...Today, 04:32 AM -
Hello people. I trying to repair my welding machine oerlikon citomig 180mp hpf and there is a little board with blown stuff.The problem is i cant identify the value of the blown resistor and diode. Any suggestion?05-18-2024, 01:22 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...Yesterday, 01:45 PM -
Hi all.
Recently I picked up a vintage HP 37717B communications analyzer which uses one of these MML200 Coutant power supplies. Needless to say the PSU is not working, and surprisingly there is apparently nothing available on the web regarding repairing one of these. No stories, no schematics, zilch!
There[I] are [/I]however many companies offering repair 'services', however I don't have the luxury of sending it off, so am intending to do the repair myself.
I admit right now that I am no expert on smps repair, although I do have a grasp on the principle of the general...05-29-2024, 08:23 PM
-
I'm fixing a board that turns on, but stops right at the beginning, it stays in hibernation with the light on.
I made these voltage measurements PPBUS_G3H=12.61V - SMC_PM_G2_EN=3.3V - PP5V_S3_AUDIO=5V - all_sys pwrgd=3.3V.
Anyone with experience in this problem who can help me?Today, 03:25 PM -
Hi everyone,
I've got a Lenovo Legion 5 15IAH7 with no post/no boot issue.
The mainboard is a NM-E241 Rev 1.0
Now I am searching for the BIOS chip so I can reflash it.
But I have some difficulties to identify the correct chip. The schemantics somehow are not really helpful for me (I am a beginner with Laptop schemantics)
I found 3 Winson chips and one GigaDevice chip as you can see on the screenshots.
My guess its the W25Q128JVSIN (UB3) because it is the biggest from all.
I attached the pages of the schemantics from the...Today, 01:31 PM -
Hello, I would like you to help me with this bios that is blocked, it works completely, I have not found a file compatible with my logic card, I programmed a bios but it did not have sound nor did the graphics card work.
ASUS
RogStrix
G513RM
Board: 6050a3348804-mb-a01
It is locked, can you help me unlock it please and give me some tutorial or post, I would like to learn how to unlock it myself.
Sorry for my English....Today, 04:15 PM -
Hi all , thanks for having me & I think this has been asked before but my case seems a bit odd.
I have a MacBook Pro , board 820-2915a and it turns on , chimes etc etc , keyboard lights up, fans spins , can turn caps lock on/off but screen is dead.
Iv tried the resets , shine torch through back logo , nothing , it seems the screen has no power. If I plug charger , it charges but if I disconnect battery it displays green light but won't turn on. Iv tried screen on with another board & it works & seems I'm not getting any voltage at pin 2 , next to ground pin .
is this...Today, 04:09 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.Yesterday, 05:25 AM -
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....Yesterday, 04:10 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?...05-29-2024, 06:29 PM
-
Dear Members,
This laptop used to work with a 19v 3.4A adapter.
After 4 years of using it, now, the adapter's output voltage drops to 17v when windows loads up. Then the laptop suddenly turns off.
Today, I have connected a 19.8v 4.5A adapter to this laptop. Then the adapter's output voltage dropped to 19.4v but the laptop worked fine.
In addition, I noticed that the cpu power coils get warm to about 50'C but the mosfets are cool.
All the voltage rails on the mainboard are fine without any reduction except for the 19v rail. All the ICs and coils on the mainboard are...Today, 01:36 AM -
hello
I am looking for two ics on this mb:
1st marked 947 and secound sot23-5 marked 5af8b
thanks and regards...Today, 04:32 AM -
Hello, I have a hp that turns on slowly, I put a different bios, but I can't update it, report bios fail. Fortunately, I saved the original dump, if you want to help me.
motherboard abw70 la-c531p rev 1.0
model 17-N001NG
product M7W40EA#ABD
serial CND5310ZD3...Yesterday, 05:05 PM