I’m working on one macbook air 15” m2 that was water damaged.
keyboard, lcd, microphone connectors were damaged so i’ve replaced all of them and without screen connected macbook worked fine. Keyboard &trackpad and also lid sensor was working fine.
i’ve put macbook in shelf and order new screen so i can fully repair it.
Now i got the screen and macbook stays at 5v 0a.
i’ve tried if it’s not in DFU with another macbook but it’s not detected at all.
i don’t have schematics so i don’t know where to start can someone help me?
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ASRock B450 Pro4 Motherboard Boardview
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Slightly Bulging Capacitors
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Dell 9010 MT BIOS Update Always Fails
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by Doctorbst
04-02-2025, 09:28 PM
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by SMDFlea
04-17-2025, 08:21 AM
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03-27-2025, 01:19 PM
-
Hello.
Have this acer nitro that have short on 1of4 for powerstage for cpu. i remove shorted drmos and power for cpu and laptop start but have no video or BL on lcd. all voltages are now ok. as i see there is some amateur injection marks so i think someone toasted cpu with highvoltage.
quistion is - should all/most of laptop works in basic when lost one of power phases for cpu/gpu ? i know that many does, but did all?...Yesterday, 02:06 AM -
[B][HELP] Acer AN515-55 (LA-J871P Rev: 1B) – Board won't power on after GPU investigation – Suspecting Super I/O or PCH[/B]
Hi everyone,
I'm working on an Acer Nitro 5 unit with the following specs:[LIST][*][B]Motherboard[/B]: LA-J871P Rev: 1B[*][B]Model[/B]: Acer AN515-55-59MT[*][B]S/N[/B]: NHQ7JAL00403906A973400[*][B]SNID[/B]: 03902728734[/LIST][HR][/HR] [B][B]Initial Issue[/B][/B]
The laptop initially presented [B]graphic issues[/B] and [B]driver failure (Code 43)[/B] for the GPU.
After preventive maintenance (cleaning, thermal...04-17-2025, 08:18 PM -
can someone help me,i have a case for this series often restart.
After entering Windows for 5 minutes, the laptop immediately restarts.
is this related to cpu/gpu?04-23-2025, 11:28 PM -
Hey guys,
so my half-year out of warranty Dell Latitiude 5320 (19817-1 SOUTH PEAK 13 10L) w/ i5-1145G7 and 16GB just started to act weirdly...
The first/upper USB-C/TB port suddenly didn't accepted the charger every time and sometimes only a different one... or with a different cable but so far, the self-diagnostics didn't noticed anything so I suspected a dirty port.
Today however... it stopped completely to accept a charger, the second/bottom one however does and after a half an hour, I notice something getting hot under there... blazing hot!
...04-24-2025, 10:27 AM -
I got a hp omen that came in for a no power repair. I specialize in mobile phones repairs but also do laptop to assist local shops that needs microsoldering jobs. This hp omen is missing the 3v on bios and also the main rail 3.3v is missing. Should I replace the power management chip? Where is the bios 3v generated...04-21-2025, 11:26 AM
-
I have a Lenovo IdeaPad 3 laptop with bad integrated RAM that's causing random memory_management BSOD's and freezing. Is there a way to disabled onboard ram so I can put a regular stick on it?
Model: IdeaPad 3 14ADA05
Serial: PF2NFW62
BIOS Version: E8EC34WWYesterday, 01:51 PM -
can some one help me remove bios password on this model
model : ideapad 5 2 in 1 14Q8x9
serial: YX0EB63S
board code: nb6920a_mb_v4
cpu: Snapdragon® X Plus X1P42100...04-21-2025, 10:56 PM -
Hi,
Just as the title says I need the BIOS file in .BIN format for an MSI 845PE Neo (MS 6580 V3.0. All I can find is the updater soft for DOS and one DTK OEM BIOS which doesn't work (or my board is just dead).
The files from the DOS updaters are missing the BIOS strings, so idk if they'll work.Yesterday, 09:31 AM -
Hi,
Have a Microsoft surface laptop studio1964 that in unable to pass the surface logo. User suggested updates where applied.
Motherboard: M1138155-008
S/N: 0F00R2Z215200C
Model: Surface Laptop Studio
Thanks in advance....Yesterday, 12:45 PM
-
Hello to everyone in this wonderful forum.
I have this SONY LCD TV KDL_46R473a
PSU GL5 APS350 :1-888-122- 12
MAINBOARD FY13_EU IP-012C101-4010
black screen ,no STB no life almost death.
on PS all the required volts are present 394V on the main cap and those on cold side 12.41V,3.45 and 3.45 are on
Also 3,5,and 12v are on.
nothing happens if i disconnect the PSU from the mainboard as on Samsung because here i think the mainboard gives the signal to the ps.
don't know what to do next all suggestions and advice are very welcome...04-24-2025, 04:40 PM -
Hey guys,
so my half-year out of warranty Dell Latitiude 5320 (19817-1 SOUTH PEAK 13 10L) w/ i5-1145G7 and 16GB just started to act weirdly...
The first/upper USB-C/TB port suddenly didn't accepted the charger every time and sometimes only a different one... or with a different cable but so far, the self-diagnostics didn't noticed anything so I suspected a dirty port.
Today however... it stopped completely to accept a charger, the second/bottom one however does and after a half an hour, I notice something getting hot under there... blazing hot!
...04-24-2025, 10:27 AM -
Hello,
I currently have an [B]HP ENVY Desktop TE01-1214
S/N - [/B]2MO22342GX
[B]Motherboard[/B] - L75365-001
[B]BIOS Chip[/B] - W25Q128JVSQ
Suspected Windows updates contained BIOS update in which, during update the Desktop PC displayed a black screen to the monitor while still powered on. Display image never restored.
Tested RAM in both slots, as well as new RAM. Tested a brand new known working i5-10th Gen GPU (Same CPU as original installed). Cleared CMOS. Tested the Desktop PC with a dedicated GPU connected, but still no display. Device will...Yesterday, 05:56 PM -
Hi all,
I got a 16inch MacBook Pro showing 5v and 0,3a on the left ports and right side has one power cycling and one showing nothing. The one cycling shows 30c under thermal camera. Surrounding components show no corrosion or any shorts.
Any ideas what to check next? The whole board looks clean compared to the other A2141s i saw....Yesterday, 11:40 AM -
I have bought this Zener Diode for this project what size and wattage resistor value do I need to use to get near 50 watt output
I bought this from an eBay seller but unfortunately they only had one
I bought three from Vetco Electronics these are Sylvania ECG5185A 9.1@10w A to Stud what size and watt resistor do I need to use to get near 10 watt output
I bought three of from them to also make battery packs with this output power limit in mind
I want to use this battery pack and turn it into a 9.1 output battery pack output to eliminate using 9 volt battery...04-23-2025, 05:50 AM -
Hope someone can help me, this is the second time I have killed one of these and I wasn't able to fix the last one. This is a portable Farad capacitor-based welder: [URL]https://www.aliexpress.com/item/1005004682391629.html[/URL] it has worked very well for me, but the DC jack failed. I replaced the DC jack, but did not wait for the capacitors to discharge, and in the process accidentally shorted the green COM wire (that joins the middle of the capacitors) to the -12V terminal. After that there was a burning smell. Now the machine turns on and runs but the capacitors do not charge up.
...Yesterday, 05:04 PM -
I have a TCL 43S435 with no backlights. I contacted ShopJimmy and they said power supply. I got replacement power supply, but still doesnt work. I have confirmed that there is an image with flashlight test. I have also verified that the led strips work when I probe them with LED tester. Any ideas would be helpful. I am also geting a double blink on the status led when trying to turn it on......Nothing on the power supply looks suspect, and caps look ok. Where should I start to test......Thanks!...04-23-2025, 10:48 AM
-
Hello everyone,
I have a RTRU6528-C-CA the leds went i took it apart and ordered the same nu.bers they fit and the holes are right but the connectors a bit different can I cut the connector and solder the positive to the positive and negative to the negative on the led strip for it to work thanks...Yesterday, 11:19 AM -
Hello, please help
unlocking MDM for 1962 Surface Go 2
SN:037534602651
[ATTACH]n3622757[/ATTACH]...Yesterday, 01:13 AM -
Hello to all,
Laptop with changed cover (back) so i don't know the exact service serial number etc.
The board has a sticker from HP showing HP 17-BY and some extra details , and i cross-referenced it to the max of my capabilities.
07/23 M/B SPS L22736-601
CS 1974
CMW97B2006R
CT:PHHNU00WBCJ0AN
17" KBL-6L
Can someone give me a clean , bios dump?
My original i think it's broken.
Laptop updated firmware/bios and shut down and never came back....Yesterday, 12:13 AM