Hey 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?...
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by Nagyesz05-13-2024, 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...05-13-2024, 09:40 AM -
by foshlandHi, I have a power supply that now is working but generating a lot of heat (200ºC) in the resistors circled by green (see photos) with a minimal load (60W). Output voltage is correct with that minimal load. What cai I look now?
Thanks a lotToday, 05:43 AM -
by nourinb2013basically the board does not boot and have a rotating cpu/dram led on
all voltages present and everything is in place
nothing burnt nor ripped
except for a strange behaviour (ram rgb is on despite the board not switched on and only have 5vsb present only)
and 5vdual is always present and i don't know why
cpu&ram are fully functional so not doubt about that
any help will be accepted...Today, 09:19 AM -
I downloaded a BIOS file from Lenovo and once I extracted the actual BIOS from the executable, it is 16MB in size, but my IC(Winbond 25Q80DV) is only 8MB in capacity. I have read you can trim the BIOS file with a hex editor but I can't find any instructions on specifically what you will remove.
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Channel: BIOS Requests ONLY!
04-27-2024, 10:55 AM -
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by PITERPENYHi all ! I really need help with my motherboard! consumption 20V / 0.060-0.280 A is unstable! not detected in DFU! There is no picture on either the external or internal monitor!
PPBUS_G3H=12,61v
PPBUS_HS_CPU=12.61v
PPDCIN_G3H=19.94v
PP5V_G3S=5.12v
PP5V_S5_LDO=5.12v
PP3V3_G3H_RTC=3.3v
PP3V3_G3H=3.3v
PP3V3_G3SSW_SNS=[B][COLOR=#c0392b]2.3-2.6v[/COLOR][/B] is unstable!
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PP3V3_TBT_X_S0=[B][COLOR=#d35400]0v[/COLOR][/B]
PP2V7_NAND=2.513v
PP1V8_G3S=1.8v
PPVCC_S0_CPU=[B][COLOR=#d35400]0v
[/COLOR][/B...05-09-2024, 11:56 AM -
by sam_sam_samI found this switching power supply when looking for some switching power supply
[url]https://www.ebay.com/itm/315237860045?itmmeta=01HXVCJVXW41H7BDNTQ716593T&hash=item4965a402cd:g:r1MAAOSw7VhhVAda&itmprp=enc%3AAQAJAAABAE5MJXhLJ4sDdBBRIYzfHfrMiMwyg4q4sxjLuQcEwZokIXptThElhllbcEb79G5jyNJQAGKbxUL6kmZAXZYqOLu%2F3gy6qXSugyM1d9yjUK7TBbtVjBLUK5KTPgPLBeYtR2e5KRo9sCehokFGzA%2FeOF8NOXl745i4xjj4KMi8B%2Ba%2BXj%2BTwDnwOn7qzPFWuJojZHcnMH25W7JaCPUbNz3rkZZEVlOvCCazPG4Zv4CQRyDaQ20fL4mjNxY%2FMPtJEtVlVcdHJpaX8qAxAgYULc%2BzH6mZHuZfQsBqlFPyjmnXPL66EZ90Gp1T%2Ba1kvw06gCSPP6KCy9pFoE6yTzzQGdd1u34%3D%7Ctkp%3ABk9SR4a_y-zuYw[/url]...05-14-2024, 05:11 AM -
by tuankietkietWhen plugged in (no battery installed), the battery light on the motherboard lights up and then turn off. When powering on, the same and light and the power button also light up in a white color but no output on the display. It stayed like that for a few seconds before shutting down. I also seem to ruined a connector that connects to the WLAN, 2 USB and audio board, the same board also have a melted 2062A IC. I will post pictures in the reply section05-11-2024, 04:40 AM
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by inflexSeeking boardview & schematic if possible for the machine mentioned in the title.
HP Vetius 15-fb0048ax / DAG3PPMB8D0 ( REV: D)
I've checked other similar units listed here on BadCaps but they're notably different unfortunately.
[ATTACH=JSON]{"data-align":"none","data-size":"medium","data-attachmentid":3272076}[/ATTACH]...-
Channel: Schematic Requests ONLY!
Yesterday, 07:03 AM -
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by olegiHi, I have Ideapad slim 5 16ABR8 with no image.I am looking for bios S/N: MP26LG3M, MTM: 82XG004ECF. This is the backup....
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Channel: BIOS Requests ONLY!
05-15-2024, 11:26 AM -
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by RGSoundGood morning I have a problem with my [B]Samsung UE49MU6120KXZT (Version 01)[/B] TV with Motherboard[B] BN94-12644A[/B].
After disconnection from 220V the TV remains switched off with status led off. I need information on how to proceed with reprogramming the flash memory and the BIN file to reprogram it.
I have purchased this programmer on Ebay: [B]CH341A EEPROM PROGRAMMER FLASH BIOS 24 25 SERIES + CLIP TEST[/B]. I include photos of the motherboard. I am not very experienced but I would like to learn so the more detailed the information, the better it will be for me...Today, 04:55 AM -
by mazi54Hello all
Maybe someone can fix bios dump?
Notebook has got a black screen and fan at full speed
SN:PF3J686X
Motherboard:HS 460 HS560 HS 760 NM-D471 REV. 2.0...-
Channel: BIOS Requests ONLY!
Today, 07:07 AM -
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by foshlandHi, I have a power supply that now is working but generating a lot of heat (200ºC) in the resistors circled by green (see photos) with a minimal load (60W). Output voltage is correct with that minimal load. What cai I look now?
Thanks a lotToday, 05:43 AM -
by ElewaysHi there,
I've an Apple iMac 2019 model A2115. Sometimes works fine, but many time doesn't works, the fan spinning but no chime e no video output.
The diagnostic Led (3+2) are the same: 1-off 2-on 3-on 4 off 5 on
Any idea?
Ty [ATTACH=JSON]{"data-align":"none","data-size":"small","data-attachmentid":3272594}[/ATTACH]...Today, 05:51 AM -
by nourinb2013basically the board does not boot and have a rotating cpu/dram led on
all voltages present and everything is in place
nothing burnt nor ripped
except for a strange behaviour (ram rgb is on despite the board not switched on and only have 5vsb present only)
and 5vdual is always present and i don't know why
cpu&ram are fully functional so not doubt about that
any help will be accepted...Today, 09:19 AM -
by zomiHi everyone,
I am looking for the schematic for this.
x1 titanium yoga
quite an unusual board this ..
this is the name I have for the file, has anyone got it ..
[B]Lenovo ThinkPad X1 Titanium Wistron HotRod LHR-1 19764
many thanks in advance[/B]Hi everyone,
I am looking for the schematic for this.
x1 titanium yoga
quite an unusual board this ..
this is the name I have for the file, has anyone got it ..
[B]Lenovo ThinkPad X1 Titanium Wistron HotRod LHR-1 19764
many thanks in advanc-
Channel: Schematic Requests ONLY!
Today, 07:47 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...05-13-2024, 09:40 AM -
by moderatora1706 Bios file i am uploading , need cleaned, its not password locked..macbook is booting ..getthing chime also.but stuck on apple logo..in target mode disk is recognised and i was able to copy data...it happened while changing the touchbar [ATTACH]n3272641[/ATTACH]
Serial number is C02STA7EHF1P
its A1706 - emc 3107a1706 Bios file i am uploading , need cleaned, its not password locked..macbook is booting ..getthing chime also.but stuck on apple logo..in target mode disk is recognised and i was able to copy data...it happened while changing the touchbar [ATTACH]n3272641[/ATTACH]...-
Channel: BIOS Requests ONLY!
Today, 07:00 AM -
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by harpI thinking to modify some ATX ver 1 supply, and wonder what if I connect 10k pot on 12v and center tap on brown wire? What range of 3.3v correction can to expect, or something will blow up if I close to rails, leave narrow 3.3v range?
It is KA7500B ic, but 3v3 sense is connected to TL431, I am not sure there is any connection between.Yesterday, 05:44 PM -
by gilad123Hello
I have an iPad Pro model A2459
Its backlight does not work. After opening the iPad, everything looks normal except for three components that are on the back of the screen near the flexible cable. I can't find any info on them model/value?
Does anyone know?
Thanks
[ATTACH=JSON]{"alt":"Click image for larger version Name:\t3 copy.jpg Views:\t0 Size:\t3.53 MB ID:\t3272432","data-align":"none","data-attachmentid":"3272432","data-size":"custom","height":"666","title":"3...Yesterday, 11:37 PM