rascao
Member
Last Activity: 12-09-2024, 01:19 PM
Joined: 07-13-2020
Location: Oleiros
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iMAc A1418 Board 820-00034 some kind of bootloop
Hi,
I have a iMac A1418 board 820-00034, the problem is when the board is cold i can get to the mac os log in for like 1 min and then start the bootloop, but is a fast bootloop sometimes i can just see the apple logo for 1 sec and keeps doing it until i un plug the power, if i try to turn on again the bootloop continues, if i let the board un plug for 15 or 20 min i can turn on again and log in on Mac os but the bootloop start again under 1 min.
I try to get to the recovery and i can, when try to install a new mac os it starts loading the usb and then start the bootloop,... -
MSI Katana GF66 11UC-045XES
HI i have a MSI [B]Katana GF66 11UC-045XES[/B], when i get it was turning on only for 1 seg and then off no display nothing, i download the bios from the MSI webpage and flash it with he SPI flasher, now on pressing the power button it turn on and stay on but no IMAGE, what i see when i create another dump from the new bios flashed i get a error on ME analyzer says "Warning: Data in Engine/Graphics region padding, possible data corruption!" after try to boot the laptop with the new bios clean downloaded from MSI, i try to clean the ME region but no luck i dont know how to doit on this... -
Hi i have a surface pro 5 that flash the microsoft logo for 1 seg and the go off, i check all the voltages and everithing looks fine, can someone clean ME for this backup to see if it that the problem
Surface pro 5 1769 256gb
S/N: 058173472253...Leave a comment:
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Need Schematics for Ideapad 5 Pro - 14ITL6 - LA-K481P REV1B
Hello i need schematics for
laptop Lenovo Ideapad 5 Pro - 14ITL6 -
Board model LA-K481P REV1B
thanksLast edited by rascao; 11-13-2023, 08:01 AM. -
Re: Need EC and bios for acer nitro 5 la-j891p REV:1A
thanks let me try itLeave a comment:
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Need EC and bios for acer nitro 5 la-j891p REV:1A
Hello i have a Acer nitro 5 board la-j891p rev:1A the EC was blown up so i cant get any backup or anything, i need the new ec bios to reprogram the ne ENE, i find some ec bios in the forum and try but no luck, the laptop model number is
model: AN515-55-71MO
sn: NHQ7QEB007024147273400
SNID: 02408375134 -
Help identify component of a asus laptop motherboard
Hello i have a asus motherboard with a component sot23-6 case with markings C34JH is shorting my 3.3v line i dont have schematics or boardview and i cant find any, the motherboard is a asus x415JA r2.0, searching on Google i found a Texas Instruments LMR14203 and the pin out is at least similar because the Vin and GROUND pins are the same position but it says is a 4.5v to 45v and is on the 3.3v line so i think is not the same, any help i will appreciate... -
Re: Mechrevo laptop
thanks bro, i will try those 2 and let you know if any one worksLeave a comment:
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Mechrevo laptop
Brand: mechrevo
Board number: gm5zgxw_12L_v1.0
Request: bios and ec -
Lenovo Ideapad Flex5-14ALC05 PLTRST missing
Hello i have this lenovo flex 5, in the power on sequence i have everithing but the last one PLTRST#, the resistance to grond turned off is in the mohms, qhen i turn on the laptop the resistance is going to 60ohms, so i think something is pulling down that line, cheking furter i see the APU is the one pulling down the signal to 60 ohm, is the APU bad? or i am missiong something else, i upload squematics and boardview.
PD: the laptop power on but it dosent POST, i get all the voltaga lines and the signals but the PLTRST#
Schematic + Boardview -> [url]https://www.badcaps.net/forum/showthread.php?t=113939[/url]... -
Re: Lenovo IdeaPad 3 15ADA05
hello this is for the AMD cpu version rigth?...Leave a comment:
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Help identify component
here is the ones those 2 i think the one of VTn is a KIC7SH08FU but i am not sure and the D39 i really dont know what it is... -
General question about laptop GPU
ok i want to know if a laptop discrete gpu is bad the motherboard will send the VGFX voltage light? because i have a msi laptop no display any image but it turn on with the power bottom it energize all the power lines, 5, 3.3, 1.8cpu, 1 1,4 memory every single power line but not the GPU so i really think it was bios problem and the bios is 2 parts 1 the main one and the other is a small bios 64kb that is the one who has the always 3.3v, the main big one 8mb only get power after you press the power bottom, but the laptop don't turn on by itself after clearing the bios that part i don't know and... -
Re: lenovo Yoga 910-13IKB black screen
on the output of PQ15 and PQ16 i have 8.7 vots no battery connected just charger, and on the PQ10 and PQ11 i have 20v...Leave a comment:
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Re: lenovo Yoga 910-13IKB black screen
thanks for your help, i am a noob on this i will investigate how to thes the power ok and enable siglas thanks!...Leave a comment:
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Re: lenovo Yoga 910-13IKB black screen
the laptop is not as mini as you can imagine
i will check that thing you are telling me thanks, i check the battery and is in good health, i take out the coils and they seems fine with the resistance as they should be.
Is there any way the memory is not working and because of that the gfx is not initializing? because the ran is getting his volts, on the schematics i cant find the on sequence to be sure , and i don't find the BOARDVIEW for this model
...
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Re: lenovo Yoga 910-13IKB black screen
PL12 is the coil i refer to big coil, is goin to the charging circuit and the main Vrail is what i see here, the battery is a 7,6 v rated one so for charging i think it is the 8v, that's why i think this motherboard uses the 8v as the main V rail because i see everywhere on the power circuits the 8v, that's why i think it was normal on this mother board as the VIN on PU25 PU29 and PU24 are 8v
pd thanks for your time helping outLeave a comment:
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Re: lenovo Yoga 910-13IKB black screen
sorry didn't pres upload on the schematic, here it is, [url]https://www.badcaps.net/forum/showthread.php?t=122737[/url] and the board is CYG50 NM-A901 Agera-SVT rev 1.0, in the input of the charger there is 20v, after the first big coil it get 8v, the same 8 v from the battery is rated to 7.6v, if i remove the battery the rail remain as 8v, i did use the ohm is 10 OHMS from the gfx coils and 12 ohms from the cpu coilRe: lenovo Yoga 910-13IKB black scre...the schematic,...Last edited by SMDFlea; 08-24-2023, 10:32 AM.Leave a comment:
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