Hello, this might be embarassing since I consider it a dumb question but keeps me kinda stuck sometimes in my journey.
I want to know if there is any post in this forum which explains my questions. [B]A)[/B] [B]When, where and how do I know when X voltage line is input or output. Example: [/B]
[URL=filedata/fetch?id=3266119&d=1715040463][ATTACH=JSON]{"alt":"Click image for larger version Name:\timage.png Views:\t0 Size:\t151.9 KB ID:\t3266119","data-align":"none","data-attachmentid":"3266119","data-size":"thumb"}[/ATTACH][/URL]...
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Welcome to our newest member, Lexx3425.
Latest Topics
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by gjgib05-06-2024, 08:11 PM
-
by XIIIHi, i'm not that experienced much with voltage injection, I've had some laptops repaired using this method so please bare with me, I've got this laptop from a customer, the laptop doesn't turn on, no fan spin, no LED indications, no beeps nothing, after taking measurements,I found missing 19 rail after digging around I found that the bq chip was faulty which ive replaced with a known working one, then I found that two of the 4 n-mosfet qm1830 leading the 5v power rail were shorted which I also replaced,now the laptop got the 19v power rail, the 5 and 3v and 1 v rails restored, after checking...Yesterday, 09:14 PM
-
by RomanSko1Hello, gentlmen!!!
My HP Probook 430 g2 does not detect battery. I tested the battery on another laptop and it is OK.
I believe smth is wrong with my PC ((.
Searching this forum I found some nice suggestions.
So, I tested Battery Connector pins (charger in/battery out) and here are my results:
pin_1 0v (-)
pin_2 3.30v
pin_3 0v
pin_4 3.38v (SCL)
[B]pin_5 2.55v (SDA)!!![/B]
pin_6 2.25 (+)
As far as I understand SDA pin must be ~3.3v???
Are there any other tests I can do before disassembling motherboard?
I...05-11-2024, 05:22 AM -
by warsztatLenovo IdeaPad 3 14ADA05 bsod "page fault in nonpaged area" ,sometimes the device works fine all day but the next day it displays this message from time to time.
Replacing the RAM and SSD drive and new Windows installation did not change anything, the error still appears.
I noticed that the laptop turns on by itself after lifting the screen, but I did not find such a function in the BIOS.
Can this be set in windows?
I wonder if it makes sense to program the BIOS.
Has anyone had this happen before and how did you deal with it?Today, 11:34 AM -
by mon2Hello. Have a known good Saeco SG200E Coffee machine but the internal hose from the pump were disconnected. Would someone be kind enough to share a few clear pics of the inside of this machine so we can reconnect the hose plumbing again? Many thanks....04-25-2024, 10:24 AM
-
by E--ManHi All,
Thanks for reading. Based on the interesting fact that the vertical lines issue don't seem to effect the menus whatsoever but rather everything around the menu regardless of video is shown, I'm trying to set mine whether the issue is the main board or the t-con board.
Again what's baffling is that the menu is not effected whatsoever. However, any other video displayed regardless of inputs or when no inputs exist exhibits the vertical lines and seem to effect black areas only.
The lines are green in color when the tv is in "Game Mode" and...5 PhotosYesterday, 10:52 AM -
by mrralvaroaGood Morning, can someone please help me to fix this bios file?
What happened was the bios got updated and it failed, after it just turns on a black screen and never loads, or if someone has a backup for this bios file that can share with me, that would be awesome, Thanks in advance.
Model: TUF506HE-DS74
Serial: M5NRCX03L364208
Mainboard: DA0NJJMBAG0 REV G...-
Channel: BIOS Requests ONLY!
Today, 10:18 AM -
-
by clrscrNeed bios fujisu lifebook CH55/j
SN: FMVC55JW
every body can help?
thanks!...-
Channel: BIOS Requests ONLY!
Today, 05:19 AM -
-
by StephenCustomer computer came in, did a DFU revive, no luck, gives error, swapped out battery with two known working batteries still no luck. Board gets 20Volts, raises up to 1Amp then restarts, track pad clicks etc. Tried DFU restore, informed the customer that data recovery is most likely not possible since it didn't give us a revive and DFU restore was the next method to save the board, however it looks like not even DFU Restore is working as well. What could be causing this? I am assuming this is the infamous A2141 flaw that has the flawed Data lines that fail? Any suggestions would be great...Today, 10:21 AM
-
by nc3000[FONT=Calibri]Hi,[/FONT]
I have a [FONT=Calibri]Asus Zenbook that is not turning on and no image, only bliking the power button.[/FONT]
[FONT=Calibri]Need, Asus UX481FLY Rev 3 Bios file, if possible.
In attachments i send the original bios, because i dont know if is corrupt, and if is possible to clear ME Region to Test.[/FONT]
[FONT=Calibri]Thanks to All.[/FONT][FONT=Calibri]Hi,[/FONT]
I have a [FONT=Calibri]Asus Zenbook that is not turning on and no image, only bliking the power button.[/FONT]
[FONT=Calibri]Need, Asus UX481FLY Rev 3 Bios file, if possible....-
Channel: BIOS Requests ONLY!
Today, 10:17 AM -
Tag Cloud
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Trending
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by StephenCustomer computer came in, did a DFU revive, no luck, gives error, swapped out battery with two known working batteries still no luck. Board gets 20Volts, raises up to 1Amp then restarts, track pad clicks etc. Tried DFU restore, informed the customer that data recovery is most likely not possible since it didn't give us a revive and DFU restore was the next method to save the board, however it looks like not even DFU Restore is working as well. What could be causing this? I am assuming this is the infamous A2141 flaw that has the flawed Data lines that fail? Any suggestions would be great...Today, 10:21 AM
-
by NagyeszHey guys, I have a Lenovo Ideapad 320-15ikb NM-B241 rev:1.0.
After turning it on, it runs for a few seconds then shuts off completely. No screen, no fan. After shutdown, a red light comes on and off fast. I've been trying to troubleshoot this for days now. It's never been opened up; the Lenovo sticker is still intact.
(!)I tried with a different BIOS battery, without any ribbon cables, on battery power, without the keyboard, and it's always the same.
Any insights on what might be causing this?...Today, 03:05 AM -
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...Today, 09:40 AM -
by mrralvaroaGood Morning, can someone please help me to fix this bios file?
What happened was the bios got updated and it failed, after it just turns on a black screen and never loads, or if someone has a backup for this bios file that can share with me, that would be awesome, Thanks in advance.
Model: TUF506HE-DS74
Serial: M5NRCX03L364208
Mainboard: DA0NJJMBAG0 REV G...-
Channel: BIOS Requests ONLY!
Today, 10:18 AM -
-
by nc3000[FONT=Calibri]Hi,[/FONT]
I have a [FONT=Calibri]Asus Zenbook that is not turning on and no image, only bliking the power button.[/FONT]
[FONT=Calibri]Need, Asus UX481FLY Rev 3 Bios file, if possible.
In attachments i send the original bios, because i dont know if is corrupt, and if is possible to clear ME Region to Test.[/FONT]
[FONT=Calibri]Thanks to All.[/FONT][FONT=Calibri]Hi,[/FONT]
I have a [FONT=Calibri]Asus Zenbook that is not turning on and no image, only bliking the power button.[/FONT]
[FONT=Calibri]Need, Asus UX481FLY Rev 3 Bios file, if possible....-
Channel: BIOS Requests ONLY!
Today, 10:17 AM -
-
by nc3000[FONT=Calibri]Hi,
If possible.[/FONT]
[FONT=Calibri]Need, Asus UX481FLY Rev 3 Schematic & Boardview and Bios file.[/FONT]
[FONT=Calibri]Thanks to All.[/FONT]
[FONT=Calibri]Hi,
If possible.[/FONT]
[FONT=Calibri]Need, Asus UX481FLY Rev 3 Schematic & Boardview and Bios file.[/FONT]
[FONT=Calibri]Thanks to All.[/FONT]
[FONT=Calibri]Hi,
If possible.[/FONT]
[FONT=Calibri]Need, Asus UX481FLY Rev 3 Schematic & Boardview and Bios file.[/FONT]
[FONT=Calibri]Thanks to All.[/FONT]
[FONT=Calibri]Hi,
If possible.[/FONT]-
Channel: Schematic Requests ONLY!
Today, 10:05 AM -
-
by clrscrNeed bios fujisu lifebook CH55/j
SN: FMVC55JW
every body can help?
thanks!...-
Channel: BIOS Requests ONLY!
Today, 05:19 AM -
-
by warsztatLenovo IdeaPad 3 14ADA05 bsod "page fault in nonpaged area" ,sometimes the device works fine all day but the next day it displays this message from time to time.
Replacing the RAM and SSD drive and new Windows installation did not change anything, the error still appears.
I noticed that the laptop turns on by itself after lifting the screen, but I did not find such a function in the BIOS.
Can this be set in windows?
I wonder if it makes sense to program the BIOS.
Has anyone had this happen before and how did you deal with it?Today, 11:34 AM -
by RomanSko1Hello, gentlmen!!!
My HP Probook 430 g2 does not detect battery. I tested the battery on another laptop and it is OK.
I believe smth is wrong with my PC ((.
Searching this forum I found some nice suggestions.
So, I tested Battery Connector pins (charger in/battery out) and here are my results:
pin_1 0v (-)
pin_2 3.30v
pin_3 0v
pin_4 3.38v (SCL)
[B]pin_5 2.55v (SDA)!!![/B]
pin_6 2.25 (+)
As far as I understand SDA pin must be ~3.3v???
Are there any other tests I can do before disassembling motherboard?
I...05-11-2024, 05:22 AM -
by GraphicManHello guys
Because the unit is old (but only occasionally used) the loudness button causes some noise due to bad contact,
sprays did not work, so i decided to solder the pins that it connects on the pcb at the on (loudness on) position
i did that and it worked fine, i know from the bottom of my heart that the switch connects 2 pins and also d/c other 2 pins
on every position it have (6 pin switch), so i was curious what would happen if i clicked the switch off while the pins are soldered at on (so basiclly on and off at the same time), when i did so the sound is gone, nothing...-
Channel: Troubleshooting Audio Equipment
05-05-2024, 06:20 AM -