Hello everyone,
I recently picked up a laptop that was about to be thrown away to try to repair it. I've tested quite a few things, but I don't know where to look anymore. Could you please help me?
[B]Brand:[/B] Asus Vivobook
[B]Motherboard reference:[/B] x421da, Rev 2
[B]Context:[/B]
The person who gave it to me mentioned it might have been exposed to water, but they weren't sure. After opening it up, I couldn't find any signs of water damage or oxidation on the motherboard.
The first thing I did was to connect the PC to a power...
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by macadam
01-15-2025, 10:34 AM
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by nico68
12-21-2024, 01:21 PM
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Today, 05:34 PM
-
Hi everyone!
I have a Zenbook 13 which could really use some more ram, as the measly 8gb it currently has is definitely not enough
I’m aware that the ram is soldered, I can do bga so it’s not an issue
The stock ram, according to cpu-z is sk hynix h9cnnnbkmmlxr-nee (16gbit, 4267 lpddr4x), presumably 4 of those
I’ve been doing some research and have found a potentially compatible sku, h9hcnnncpmmlxr-nei (32gbit, 4267 lpddr4x)
I assume I’m also going to need to configure the straps, which would require a schematic… unfortunately,...Yesterday, 07:09 PM -
I see the positive and negative wires on the connector, but will it even allow a charge without the other connectors doing whatever communication it is that they do?
I'm well-versed in battery charging, just not laptop batteries. (I'm a lithium battery reseller)
Laptop became unresponsive while in storage, battery was in great health the last time I cut it off, but now it's reading zero volts at the connector.Today, 11:01 AM -
Hi everyone!
I’m trying to diagnose (and perhaps even upgrade) this Chieftec (Delta rebrand) power supply from an old rig
The computer just stopped turning on one day. No explosions, no magic smoke, it just died.
There is no 5vsb, and nothing happens when I try to jump start it, it’s completely dead…
I took it apart and nothing looks out of the ordinary. The fuse isn’t blown and the main cap gets charged (found out the hard way lol)
The caps are mostly ltec with a samxon primary, none of which are bulging
Any ideas what I should look...01-05-2025, 04:31 PM -
Got a 2021 14" MacBook Pro M1 here that died suddenly. No signs of liquid damage. However there was a strong burned smell. Upon removing and flipping the board I found a burned cap C9400 near PMIC U9300. Photos attached. Should I just proceed with replacing U9300 and some of the surrounding caps? Also, I don't have any donor boards from this generation of MacBooks, maybe could locate a compatible cap from an older touchbar model?01-21-2025, 02:40 PM
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I need the schematic of "W86_MB Ver: C"
It has charging problems, when I plug it in and it is on it gives an error, it charges and stops charging intermittentlyToday, 02:18 PM -
It's feeling like this board has a case of badcaps, instability and reboots - and not wanting to necro a a very old thread, it seems the 680uF 4V are highly suspect.
I don't really want to blanket recap everything, but maybe the others around that area could do with being changed?
Equipment: I have a temperature controlled soldering station, read the bit where it says set to 400F, don't think I would have gone that high without reading that.
Spring plunger solder sucker, and some desolder braid... and a bit of good old leaded 60/40.
PS. Additional diagnostic,...01-22-2025, 12:12 PM -
I NEED HELP MY BIOS IS NOT WORTH AND I SEARCHED AND CANNOT BE FOUND HERE I SENT MY BIOS FOR HELP ME MAINBOARD G3664A...Yesterday, 12:01 PM
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I'm looking for the Boardview and/or Repair Guide for an ASUS Prime B450M-A II that I'm trying to revive.
Thanks...Today, 01:43 PM -
Hello
The TV does not show any sign of life , I started the troubleshoot as this , no power Led, no reaction when pressing the power button.
I checked the Power coming out from the power supply, the 3.3V_standby is correct and steady, then I checked the 1.2V_standby produced by IC6001 which Is good as well.
So I decided to control the main IC , IC4000 , he does not output any oscillation on the Xtal, Then I am now bloacked there.
The schematic is downloadable at Eletrotanya website , the schema is weird because the processor is not represented...Yesterday, 05:55 AM
-
[B]TravelMate P633-M bios[/B]
please i need help, my old file attached[B]TravelMate P633-M bios[/B]
please i need help, my old file attached...Today, 07:35 AM -
Hello everyone,
I recently picked up a laptop that was about to be thrown away to try to repair it. I've tested quite a few things, but I don't know where to look anymore. Could you please help me?
[B]Brand:[/B] Asus Vivobook
[B]Motherboard reference:[/B] x421da, Rev 2
[B]Context:[/B]
The person who gave it to me mentioned it might have been exposed to water, but they weren't sure. After opening it up, I couldn't find any signs of water damage or oxidation on the motherboard.
The first thing I did was to connect the PC to a power...Today, 05:34 PM -
I see the positive and negative wires on the connector, but will it even allow a charge without the other connectors doing whatever communication it is that they do?
I'm well-versed in battery charging, just not laptop batteries. (I'm a lithium battery reseller)
Laptop became unresponsive while in storage, battery was in great health the last time I cut it off, but now it's reading zero volts at the connector.Today, 11:01 AM -
Hi, we need to correct the bios for this model, I used a network bios that turns on but after about thirty seconds it emits beeps and turns off, I attach the original backup which gives a black screen
Olivetti P55 model
W650SJMB-0D motherboard
sn NKW650SZ0005C02468
Thank you...Today, 04:57 AM -
-
Hello,
Need help unlocking this dump of an HP Folio G1.
Thanks!...Today, 02:32 AM -
I need the schematic of "W86_MB Ver: C"
It has charging problems, when I plug it in and it is on it gives an error, it charges and stops charging intermittentlyToday, 02:18 PM -
Hello, my Aunt recently gave me her broken Sony XBR-65A8G OLED after getting a replacement. It had a 4x led flash error, a replacement T-con didn't fix the error but with helpful info from this forum I found one of the smd ceramic caps on the panel pcb (C575/C378) on a 24v line was shorted to ground. I removed that cap and the tv turned on without error. It still had a black screen with the original t-con back in it, once I put the replacement t-con in it finally had a picture. After doing a panel refresh it had a very good picture but with a few vertical lines for some scenes. For owners with...Yesterday, 04:04 PM
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I have a Dell Vostro 5625 which failed during a BIOS update and now doesn't boot. When the power button is pressed, the keyboard lights up and the fan spins, but doesn't get past that! The flashing light codes suggest a RAM issue, but I have tried different RAM to no avail.
I am hoping that I can remove and flash the BIOS to see if that does the trick, and am hoping that someone is kindly able to create a new BIOS image for me please?
Service Tag: 1CDJVL3
Thanks...Today, 04:37 AM -
I'm looking for the Boardview and/or Repair Guide for an ASUS Prime B450M-A II that I'm trying to revive.
Thanks...Today, 01:43 PM