Hi,
From two completely different customers I received two Lenovo Ideapad 3 17ADA05 laptops on the same day with the same problem:
- Screen turning black all of a sudden and not being able to get out of it without a battery reset.
- Showing artifacts.
The above happen either in Windows or in memtest86+
The RAMslot's pins have been reworked to be 100% tight to the board.
I opened one of them and disabled the on board RAM. The problem remained, so I changed the Sodimm in the RAM slot. The problem remained.
Is this a fluke or is this...
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HP Pavilion 15-1812nd scrren brightness issues
I have a notebook, HP Pavilion 15-1812ND with brichtness issues.
When in windows, I use the the brightness keys on the keyboard, brightness goes up aprox (75%) then the screen begins to flicker and gets darker again.
When I lower the brightness again it's getting brighter first and then it dims and the flickerings gets less.
I already chaned the screen and LVDS Cable.
Does anyone ever seen this problem and maybe have an idea how to fix this.
Any help would be apprecited[B][I].[/I][/B]
Thank youI have a notebook, HP Pavilion 15-1812ND with
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Hi mon2. Is there something you can think of with the values I gave in the previous post?...
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Thank you.
LDO = 16K
EN2 = 1.6V steady
EN1 = pulsating up to 3.1V
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Thanks for the good info.
The resistance to GND from the 3.3V coil is 2K, just like the 5V coil which is stable.
The pulsating coil takes about 4 seconds to cycle.
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3.3V regulator in HP 14-dw1700nd
Could somebody please identify u60100? It goes up and down between 3.3V and 0V....
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Thanks for the effort. Unfortunately the machine still doesn't post. This laptop looks like a write off
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Hi,
I have a dead Acer Nitro 5 N20C2 AN517-52-757 here. One mosfet in the cpu vrm was busted. After replacing it, the short from the main rail to GND was gone. The laptop does show signs of life now as the fans spin up, the keyboard light goes on, I see handshake on pin2 and pin5 of the bios chip (nothing more) and the laptop switches off after keeping the powerbutton pressed for a a couple of seconds.
Since I can't get it to post, my last chance is a corrupt bios. If somebody could please have a look at the attachement.
S/N: NHQ82EH0050410526A3400
SNID: 04102109834...
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Thanks for your reply and effort.
It did turn out the mainboard is physically borked.
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Fujitsu Esprimo Q956 bios request
I have this Fujitsu Esprimo Q956 which turns on, but does not post, no video, just full speed fan. For now the bios is suspect.
I did search for a dump, but I can't find one so hopefully one of you can fix my possibly broken bios.
Brand: Fujitsu
Product: Esprimo Q956
Model: MPC3
System No.: S26361-K1012-V200
Part No.: ABN:K1012-V200-586
Serial No.: YM5G009576
[USER="6289"]any[/USER] of the admins: I'd like to donate for all your services. I did send a private message a while ago, but did not receive an answer.any...
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I injected my DMI area and key win in the areas you pointed me at. I did notice that the virgin bios was in Manufacture Programming mode unlocked. I'm not 100% sure I saw the crc error 502 with the virgin. I'd have to check that. But this admin password in the bios is bothering me a bit. I'll contact the customer on that. Or I could blank it if I knew its offset....
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Thanks.
I get a Bios CRC error 502 and it's in Manufacture Programming Mode Is In Unlock Mode. While I am probably able to fix the latter, I found out the bios is password locked. Is this password in the original's DMI area or is it in the bios you revered to? I wonder if I am able to get the CRC error out of the way.
Some help is appreciated.
...
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Thanks Peste,
This bios gets the laptop to post and boot. Can you tell me the start and end address of the DMI region so I can inject this data?
That would be the cherry on top....
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HP Omen 17- ck0490nd bios request
I've a HP Omen 17- ck0490nd which has the proper voltages on the coils.
The bios communicates with the cpu on pin 2 and 5 only for a second and then all communication is lost.
One of the fans keeps turning, the other doesn't.
The info on the bottom cover:
SN# 5CD150GBHX
ProdID: 4B735EA#ABH
OMEN by HP Laptop 17-ck040nd
Stickers on the inside of the bottom cover:
HT-01 E316987
_E419 21 10 08 B4
PA 2021.11.09.E
MTP4DG3LBATP00
146600YND11103A
TFQ38G3LTP1014840023
Many thanks...
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Dell Inspiron 14 5425 bios needed
Hi,
I have a Dell Inspiron P157G004 here which does everything except turn on the screen. I see a lot of activity on the bios chip's pin 5 but just a high signal on pin 2. Therefore I suspect the content of the chip.
Could somebody take a look at the attached dump?
The info from the sticker:
Reg Model: P157G
Reg Type No.: P157G004
ZU10247-21009
R-R-E2K-P157G004
DP/N: CC6TY A00
ST: JF64DS3
EX: 42276139203
Thanks in advance...
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Chip identification Gigabyte B660M DS3H AX
On a Gigabyte B660M DS3H AX I found a chip with a crater. I was not able to find a boardview/schematic of this board.
I have a hard time identifying it, so maybe you would be so kind to help me out.
It the first two symbols are most probably N3, followed by DPC.
Already thanks for your attention.1 Photo
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Lenovo laptops unstable with sodimm ram
For the second time this week I received a Lenovo laptop with onboard ram and one sodimm slot. Both laptops run stable from their onboard 4GB RAM, but turn out to be very unstable when there's a sodimm inserted in the slot.
Both times it was a GS44D/GS54D NM-C711 rev 1.0 board.
Both times there were no loose pins on the slot and it did not matter what sodimm I put in. It just artefacts and crashes randomly when there's extra ram.
What I did notice is that almost all coils have very dirty phases one the mosfet side when checked with an oscilloscope. Not something I see very often....
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