Hola, tengo una Notebook Samsung NP270e4e-k01ar, que me esta dando (2) problemas.
1) Error al intentar ingresar a la bios
--> No me deja ingresar a la BIOS [F2]. Para poder ingresar a la bios, tuve que crear un acceso directo y dentro en destino poner C:\Windows\System32\shutdown.exe /r /fw /t 1 --> Con esto fuerzo a que se reinicie e ingrese a la BIOS.
Una vez dentro de ella, voy al BOOT, pero o sorpresa, no está como corresponde, me sale lo siguiente.
BOOT PRIORITY ORDER (img-05)
1- Windows Boot Manager
2- SATA HDD
3- NETWORK...
Badcaps - Explore our electronics repair forums
Collapse
Collapse
-
MacBook Pro M1 13 820-02020 stuck at 5V 0.1A
Board had some light liquid damage, nothing serious, just one bad looking cap that I removed (from PPBUS_G3H to ground), near speaker amps.
There was no corrosion as such, just few tiny spots, really minor.
The board is stuck at 5V, it draws 0.1A all the time. Only at poweron the amperage surges up to about 0.15-0.18A, then it settles at 0.1A.
I put it in DFU and it didn't do anything, wasn't detected on other machine.
Voltages all seem OK near the CD3217 chips, all LDOs are present, also no liquid damage was nowhere around those.
But measuring other... -
QN75QN85BAFXZA no backlight
2+ year old TV with many (720? 65" version has 720) mini LED dimming zones. TV boots, has sound, panel picture can be seen with flashlight. No backlight. No TV model sticker on rear panel (Maybe Samsung service removed it, read below). Found the model # through the PSU and zoned LED driver board numbers.
PSU has a click near LED output circuit at 1 second interval, sounded like the 4x barrier rectifier area. Protective pastic liner under PSU shows heat signature on the Schottky Barrier Rectifier in this circuit. Found a shorted diode (2 diode per rectifier, failed rectifier labled...Last edited by howardc64; Today, 05:14 PM. -
Sony M851 MBX-217 no POST and restart loop
Before proceeding with a component level repair, the usual troubleshooting process was followed:
1. Disassemble and unplug everything except the power connector.
2. Replace RAM.
3. Replace CPU.
4. Rewrite BIOS.
Unfortunately the board was still stuck with a 0.75A power consumption at 19V.
After reflowing both GPU and north bridge in one shot (it can't hurt) there was an instant improvement with a constant 1.75A power consumption, but I immediately noticed smoke and the typical smell coming from the GPU area.
I thought to myself "Well,... -
(Move please wrong category!) HP Elite x2 G4 (EMP20 LA-G931P) schematic/boardview
Hey,
Does anyone have a schematic or boardview for the HP Elite x2 G4? Motherboard shows "EMP20 LA-G931P". I've gotten 200 of these from my employer to unlock and its been hell since the EC rom is on the back of the board, im trying to find test points or any way to communicate to the EC or its rom without having to dissasemble the whole thing just to get to the back.
Thanks. -
Russound CA4 Power Supply Repair
Hello Everybody,
Trying to repair a power supply from a Russound CA4 Multizone Controller (picture attached)
Russound no longer supports it but were kind enough to provide a schematic of the power supply (pdf attached).
The outputs marked 12v and 20v are all measuring only 1v.
The board is clicking, which I think means it is in something called hiccup mode when the flyback transformers switches because of an internal problem or something else on the board Overloading it.
The capacitors physically look clean (no bludgesor leaks) and...Last edited by CMCM; Today, 01:14 PM. -
Lenovo Legion Y540-17IRH EC dump
Hi,
i need EC dump for
Lenovo Legion Y540-17IRH-PG0
NM-C541
IT8226E-192
Thank You -
Macbook Air M2 A2681 NAND upgrade error 35
Hello people. I have undertaken an upgrade from 256GB to 512GB. I have another A2681 board that I sourced NANDs, resistors and capacitors from. Yet when I try to restore the firmware in FDU mode I get the error 0x23 (35) (error formatting the NAND). Could it be the faulty NAND or I have missed something? Thank you...
No content found
Show More
Please log in to your account to view your subscribed posts.
What's Going On
Collapse
There are currently 495621 users online. 4747 members and 490874 guests.
Most users ever online was 1,342,976 at 10:51 PM on 04-26-2024.
Badcaps Statistics
Collapse
Topics: 221,288
Posts: 1,509,847
Members: 588,587
Active Members: 21,598
Welcome to our newest member, Naribochi.
Forums
Collapse
Top Active Users
Collapse
- eccerr0r (8,678 posts)
- treader (6 posts)
- ti notebook (5 posts)
- boleban (1 posts)
Today's Birthdays
Collapse
Latest Topics from Friends
Collapse
There are no results that meet this criteria.