Hi again guys. I have this motherboard that won't show display even tho it was doing it yesterday. I think something could've past away in the circuit.
I'd appreciate if anyone who is used to MOBO LCD voltages and circuits could enlighten me since this is the first time I have to deal with it.
I'm missing [B]+3VLCD.[/B]
This is the circuit
[URL=filedata/fetch?filedataid=339573][ATTACH=JSON]{"data-align":"none","data-size":"thumb","data-attachmentid":3284862}[/ATTACH][/URL] [URL=filedata/fetch?filedataid=339576][ATTACH=JSON]{"data-align":"none","data-size":"thumb","data-attachmentid":3284863}[/ATTACH][/URL]...
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-
Yesterday, 09:29 PM
-
Hey everyone,
I'm a novice trying to repair my laptop. The LCD screen has an image, but no LED backlight for the image. It also produces an image when connected to an external monitor.
I have found what I believe to be a blown inductor labeled "L4502" and "120 Ohm" in the schematics (zoomed in image, blue arrow to blown component). I have included an image of the general area of the mobo and an excerpt from the schematics as well.
I am having trouble selecting a replacement component, which I believe to be a 120 Ohm ferrite bead, from the components...Today, 03:39 PM -
I have this 1707 with the 5V 0A power loop issue on 3 of the jacks.
One of the CD3215C00 had corrosion under one side U3100 to be precise.
This USB jack was drawing ~.2A and not boot looping.
After replacing the CD3215 I am having an odd problem. I can rotate the USB-C and it only works in one orientation. And now it boot cycles, like the other usb channels so I'm part way there.
After looking at the schematic and board view. It makes very little sense that this is happening since they both pin 59 and pin 60 both go to the same places on J3300.
...Today, 08:02 PM -
daxktdmb8c0
Maybe someone has a photo of a section of the board, otherwise there are no diagrams or boardview...Yesterday, 12:31 PM -
The title basically says it all. The card displays randomly placed blue pixels on the screen (especially when rendering 3D stuff), the right edge of the screen is garbled in VGA mode, and it sometimes fails to re-initialize on a reboot or when trying to wake up the display. Bad VRAM? Dud GPU?Today, 07:41 PM
-
Hi fellow lifesavers.
I have a Samsung washer-dryer WD80N645OOW which died mid-cycle. No response to anything, completely dead.
Checked the socket, the plug fuse, all good. Took it out to examine the boards.
There is a relay clicking on the mainboard. Upon applying power, I can see a diode flashing on inverter board, after a while a diode on main board lits up for a split second, then I can hear a relay clicking. This repeats a few times, then everything dies completely.
I've been trying to examine the main board, but it's a bit difficult becuse...Today, 09:11 AM -
The HILTI CPC battery flashes green but no tool starts or works. when testing the battery has 19.2v what could be the problem with them because I have three similar ones but there is nothing written on them all the patches are removed in the first B22 /4.0 with 19.2v the second one B22 /5.2 with 21.8v the third B22 /4.0 with18.3v are all three destroyed ? a bit difficult to believe have also tried other Hilti tools the same thing if someone who can help very grateful...06-03-2024, 08:05 AM
-
I'm working on the y-main board and I need help figuring out what Q5019 and Q5021 are. They are made by AUK and the first 3 identifying marks are SMK. The rest are blown off and lost. The board is LJ92-01935A....06-01-2024, 11:47 AM
-
Bios registered (locked), I will upload the dump here if anyone can help me unlock it.
Bios cadastrado (bloqueado), farei upload do dump aqui se alguém puder me ajudar a desbloqueá-lo....Today, 03:34 PM -
Hello,
I need the BIOS for the Acer A315-510P with the nb6301a_mb_v3 motherboard. Notebook is not turning on and everything indicates that the bios is corrupted, if you could send me a backupToday, 03:22 PM
-
I have this 1707 with the 5V 0A power loop issue on 3 of the jacks.
One of the CD3215C00 had corrosion under one side U3100 to be precise.
This USB jack was drawing ~.2A and not boot looping.
After replacing the CD3215 I am having an odd problem. I can rotate the USB-C and it only works in one orientation. And now it boot cycles, like the other usb channels so I'm part way there.
After looking at the schematic and board view. It makes very little sense that this is happening since they both pin 59 and pin 60 both go to the same places on J3300.
...Today, 08:02 PM -
The title basically says it all. The card displays randomly placed blue pixels on the screen (especially when rendering 3D stuff), the right edge of the screen is garbled in VGA mode, and it sometimes fails to re-initialize on a reboot or when trying to wake up the display. Bad VRAM? Dud GPU?Today, 07:41 PM
-
Hey everyone,
I'm a novice trying to repair my laptop. The LCD screen has an image, but no LED backlight for the image. It also produces an image when connected to an external monitor.
I have found what I believe to be a blown inductor labeled "L4502" and "120 Ohm" in the schematics (zoomed in image, blue arrow to blown component). I have included an image of the general area of the mobo and an excerpt from the schematics as well.
I am having trouble selecting a replacement component, which I believe to be a 120 Ohm ferrite bead, from the components...Today, 03:39 PM -
Hello,
I need the BIOS for the Acer A315-510P with the nb6301a_mb_v3 motherboard. Notebook is not turning on and everything indicates that the bios is corrupted, if you could send me a backupToday, 03:22 PM -
I started troubleshooting this Razer Blade 15 laptop DA560 motgerboard a while back, due to some shorted 19v, 5v, 1v power rails. I fixed some of components and think 19v rail is good, 5v rail is good, 3v is better but not all way i think, and 1v is still bad. At this point the diode reading on these rails are 19v - 0.032v , 5v - 0.167v, 3 - 0.63v and 1v - 0.005v .
When the rails when down, I went down different rabbit holes and seeing chips getting pretty warm on thermal but not blazing hot. Yet there were not any caps or any small components getting blazing hot. Example is EC chip,...Today, 11:35 AM -
Hi again guys. I have this motherboard that won't show display even tho it was doing it yesterday. I think something could've past away in the circuit.
I'd appreciate if anyone who is used to MOBO LCD voltages and circuits could enlighten me since this is the first time I have to deal with it.
I'm missing [B]+3VLCD.[/B]
This is the circuit
[URL=filedata/fetch?filedataid=339573][ATTACH=JSON]{"data-align":"none","data-size":"thumb","data-attachmentid":3284862}[/ATTACH][/URL] [URL=filedata/fetch?filedataid=339576][ATTACH=JSON]{"data-align":"none","data-size":"thumb","data-attachmentid":3284863}[/ATTACH][/URL]...Yesterday, 09:29 PM -
Hi fellow lifesavers.
I have a Samsung washer-dryer WD80N645OOW which died mid-cycle. No response to anything, completely dead.
Checked the socket, the plug fuse, all good. Took it out to examine the boards.
There is a relay clicking on the mainboard. Upon applying power, I can see a diode flashing on inverter board, after a while a diode on main board lits up for a split second, then I can hear a relay clicking. This repeats a few times, then everything dies completely.
I've been trying to examine the main board, but it's a bit difficult becuse...Today, 09:11 AM -
daxktdmb8c0
Maybe someone has a photo of a section of the board, otherwise there are no diagrams or boardview...Yesterday, 12:31 PM -
I have a 5W lamp on 12Volts battery, I want it to be half as bright, so I will add a resistor. What resistor should I supply?
A = W = 5 = 0.416mA
_ _
V 12
R = V = 12 = 28.84 Ohms (R) this is resistance of lamp
_ _____
I 0.416
So I will add one resistor 28.84 Ohms
I will have 28.84 + 28.84 = 57.6 Ohms
Or 28.84 + 28.84 = 14.42 Ohms
I don't know if it will work in series or in parallel
voltage would be 6V and amp current mA = 0.208mA We divide everything by two
W= V * I...06-04-2024, 01:58 AM -
[B][SIZE=16px][U]Singer X455U[/U] BIOS need (6-71-w94p0-d02)[/SIZE][/B]
[I][B][SIZE=16px]please give me, me cleared bios or backup bios from same model asap.[/SIZE][/B][/I][B][SIZE=16px][U]Singer X455U[/U] BIOS need (6-71-w94p0-d02)[/SIZE][/B]
[I][B][SIZE=16px]please give me, me cleared bios or backup bios from same model asap.[/SIZE][/B][/I][B][SIZE=16px][U]Singer X455U[/U] BIOS need (6-71-w94p0-d02)[/SIZE][/B]
[I][B][SIZE=16px]please give me, me cleared bios or backup bios from same model asap.[/SIZE][/B][/I][B][SIZE=16px][U]Singer X455U[/U] BIOS need (6-71-w94p0-d02)[/SIZE][/B]Today, 07:26 AM