Re: Lenono Legion Y545 Failed Bios Update. Program Chip?
At this point i have reverified that the bios and vbios chip have been programmed correctly
but at this point still no good.
i have since stopped working on it
bboyzell
Member
Last Activity: 10-30-2023, 07:52 PM
Joined: 08-14-2014
Location: Victoria
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Re: Lenono Legion Y545 Failed Bios Update. Program Chip?
So i have made a bit more progress now
[url]https://forums.lenovo.com/t5/Gaming-Laptops/Y540-BIOS-Recovery-Mode-Flash-BIOS-from-USB/m-p/5026109[/url]
It is possible to do a forced bios recovery via usb if you fail a bios update on your Y545
i have attempted this but still have no system up again going, i suspect playing with the vbios chip first didnt help..
but i am getting my 1.8v programmer in the next few days
i know no ones commenting but im still posting,...Leave a comment:
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Re: Lenono Legion Y545 Failed Bios Update. Program Chip?
So far iv been having a bit of luck
read and reprogrammed the bios "25B127DSIG"
set CH341A Version 1.18
i have attached the bios dump
Set it as Winbond W25Q128BV.
Now awaiting the 1.8v Adapter to reprogram the Vbios
Atm im still getting a blinking power light and a brief fan spin, then looking every 15 seconds...Leave a comment:
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Re: Lenono Legion Y545 Failed Bios Update. Program Chip?
from my findings the 25B127DSIG is a SPI Bios Chip but of a lesser known brand
[url]https://au.mouser.com/ProductDetail/GigaDevice/GD25B127DSIGR/?qs=%2Fha2pyFadujRLKXNVxsU1PAKo4G0w3kztePeEXkYT%252BbPXPsTEejDYQ%3D%3D[/url]
Since my programmer doesn't want to read from it, might try and harvest a W25Q128 off an old dead laptop (have a few to pick from) and program and installRe: Lenono Legion Y545 Failed Bios U...ut of a lesserLast edited by bboyzell; 01-26-2021, 02:17 PM.Leave a comment:
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Re: Lenono Legion Y545 Failed Bios Update. Program Chip?
it has left my slightly confused as the model number has 127 in it, not 128 like most chips...Leave a comment:
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Re: Lenono Legion Y545 Failed Bios Update. Program Chip?
from my googling the chip in the UC3 Position, is a Power IC
yet in the Y540 Schematic its mentions to be a W25Q128JVSIQ_SO8 at this positionLeave a comment:
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Re: Lenono Legion Y545 Failed Bios Update. Program Chip?
That would make sense..
..now my 341 Programmer is giving me errors writting to it..
I have found the UC3 located just next to the m.2 slot.
once i have written the Vbios and put it back i will then do a dump of the bios
Chip number: 25B127DSIG...Leave a comment:
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Re: Lenono Legion Y545 Failed Bios Update. Program Chip?
File Dump, Suspected corrupt...Leave a comment:
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Re: Lenono Legion Y545 Failed Bios Update. Program Chip?
Bingo, Found the Chip W25Q80EWNIG 1.8v , now the drama of finding a bios dump thats usuable
Im mostly finding dumps like this
[url]https://www.alisaler.com/legion-y545-fy515-516-517-518-fy523-524-525-526-nm-c221-rev2-0-bios/[/url]
that are 8mbyte not /8mbit
I did do dump using my CH341A, and have attached it .binRe: Lenono Legion Y545 Failed Bios U...ama of finding...Last edited by bboyzell; 01-23-2021, 12:00 AM.Leave a comment:
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Re: Lenono Legion Y545 Failed Bios Update. Program Chip?
there is a separate bios chip to the EC?, i thought the bios was intergrated in to the EC
I did tear it down and had a quick look couldnt spot anything resembling it
CheersLast edited by bboyzell; 01-22-2021, 06:05 AM.Leave a comment:
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Lenono Legion Y545 Failed Bios Update. Program Chip?
Hi Guys
I purchased a Lenovo Legion Y545 (i7 9750 / RTX 2060)
The previous owner he told me it failed a bios update.
I thought cool i could use a simple EEPROM Programmer, nope
I didn't realize that lenovo don't use EEPROM chips, but EC
So from my findings i can use a Vertyanov Programmer, to reprogram my EC chip via the keyboard connection, but im not 100% sure on this
The Mainboard in my legion is NM-C221 Rev2.0
The Lenovo EC is
IT8226E-192
1919-BXA
S16YSA
L003
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Re: LG50PA6500 No Display, Suspected PSU
Upon a Closer inspection, i think i have found a Crease on the ribbon cable nearest to the top of the Plasma, it looks to almost be at a right angle compared to the rest of the smooth flowing cable
I take it them its not worth procedding with trying to fix this unit, replacing the upper buffer would just result in the new one being shorted out by the Panel (wasting $70+)
Thanks alot for you time & Input Helping me with this Tom!
...
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Re: LG50PA6500 No Display, Suspected PSU
I have now just tested out the Upper Buffer Board
I tried it the following ways.
No Lower Buffer Board + Upper Buffer Board + Panel Connected = Poor Voltage
No Lower Buffer Board + Upper Buffer Board + Panel Not Connected = Poor Voltage
My Conclusion if a "Faulty Upper Buffer Board" Sadley it seems to be the more costly Than most the the other boards on the Plasma
Proceeding to Do this
Testing Y-Buffer Board for short Circuits
[url]https://www.youtube.com/watch?v=51SZsfH60EY&noredirect=1[/url]...Last edited by bboyzell; 08-28-2014, 12:27 AM.Leave a comment:
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Re: LG50PA6500 No Display, Suspected PSU
Ok, Removed the Upper Buffer Board.
I am now getting display on the lower half of the Screen
-VY is Running at a constant 184.x
VSC is running at a Constant 145.x
I will visibly inspect the top buffer board and see if i can see anything foul...Leave a comment:
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Re: LG50PA6500 No Display, Suspected PSU
Thanks
"VSC" Is giving me a constant Variable Reading of between 03.3 to 00.0
"-VY" Is Giving me a Reading that is constantly switching With Value similar to the following 14.x - 22.x - 34.x(Highest seen)
Just Came across this thread again.
LG 50PA6500 - Sound no Picture
[url]https://www.badcaps.net/forum/showthread.php?t=30067[/url]Re: LG50PA6500 No Display, Suspected...Is giving me a...Last edited by bboyzell; 08-27-2014, 01:25 AM.Leave a comment:
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Re: LG50PA6500 No Display, Suspected PSU
I have found VSC and -VY Resistors on the ysus, is that what you are refering to?
Am i able to measure it with my Multimeter?
I own the following one...Last edited by bboyzell; 08-27-2014, 01:05 AM.Leave a comment:
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LG50PA6500 No Display, Suspected PSU
Hi All
I have recently been given a LG 50PA6500 50" Plasma with the following problems[LIST][*]No Display, Or backlight[*]Audio is Ok, So i have been told by old owner[/LIST]
Possible Symptoms/Things iv noticed[LIST][*]Noticable One off Click/Pop From the PSU When Power is plugged in[*]Plasma instantly Powers Up, Doesnt go directly to Standbye[*]Hit the Power Button and goes to Stand-bye[*]CTRL Panel is Blinking Different Green Codes (Anyone have a guide for these,no luck finding on so far)[*]Input Board has a Single LED glowing red.[/LIST]
Thinkings... -
Re: New Members - please post your introductions here
Hi My Rick
I have been in the IT industry for around 6 years now (PC Sales/Repairs)
But in recent time i have expanded in to fixing mobile phones and now slowly branching out to other devices (TV/Monitors)
And I have found this site which has a great amount of info on it and im guessing clued up people
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