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#1 |
Member
Join Date: Feb 2021
City & State: Florida
My Country: Usa
I'm a: Knowledge Seeker
Posts: 93
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![]() Ok, I have a laptop motherboard who does not want to turn on. So I isolated the problem to either a BIOS or KBC problem. So I'm trying to read the software from the BIOS chip, and I get a wierd file. (all F's) I'm going to attached the file to this post. I'm using CH341A miniprogrammer usb board. And for the software, I'm using AsProgrammer v1.4.1. So I'm worried that BIOS software might have come corrupted, or it also could be that it is not reading from BIOS properly due to driver issues.
Power led is on and when I press read on software, the communication led comes on. However, when I try to read, is telling me to unprotect the chip first. This is first time doing this. Motherboard: DA0R53MB6E1 Rev E R53 board schematic: http://www.s-manuals.com/pdf/motherb...schematics.pdf BIOS Chip: EN25Q32B AsProgrammer https://github.com/nofeletru/UsbAsp-flash/releases CH341A usb board: https://rb.gy/6hj9ey |
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#2 |
Badcaps Veteran
Join Date: Feb 2014
City & State: Midlands
My Country: England
I'm a: Professional Tech
Posts: 6,006
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![]() Are you reading the chip off the board or in circuit ?
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#3 |
Senior Member
Join Date: Feb 2021
City & State: Pickering Ontario
My Country: Canada
Line Voltage: 110
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Posts: 110
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![]() A BIOS chip that has all "FF" means it's either erased or the programmer is not detecting the chip properly. The default memory buffer is all "FF" as well so it's not always easy to tell which it is. The error message you are getting might be telling you that the chip selection is not right. Double check or try the "Detect my chip" option.
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#4 |
Member
Join Date: Feb 2021
City & State: Florida
My Country: Usa
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#5 | |
Member
Join Date: Feb 2021
City & State: Florida
My Country: Usa
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![]() Quote:
I click on that button and it seems to be reading the ic and then it gives me all F's Last edited by Zentech; 04-08-2021 at 10:03 AM.. |
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#6 | |
Member
Join Date: Feb 2021
City & State: Florida
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![]() Quote:
Code:
Current programmer: CH341 ID(9F): FFFFFF(Unknown) ID(90): FFFF(Unknown) ID(AB): FF(Unknown) ID(15): FFFF(Unknown) |
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#7 |
Stevedb
Join Date: Feb 2018
City & State: Schendelbeke/ East-Flanders
My Country: Belgium
Line Voltage: 240v ac
I'm a: Hobbyist Tech
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![]() Did you use the programmer before. Did you put the jumper at the right place.?
You can use this programma also Colibri and Neoprogrammer. Can you sent picture of your programmer how you set it up and you must use auto detect the chip. Good luck Best regards Steve |
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#8 | |||
Member
Join Date: Feb 2021
City & State: Florida
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![]() Quote:
Quote:
Quote:
Last edited by Zentech; 04-08-2021 at 01:46 PM.. |
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#9 |
Member
Join Date: Feb 2021
City & State: Florida
My Country: Usa
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![]() wouldn't be better to buy it already programmed.. I have not found anyone who offer the service. This has proven to be something that it doesn't work very stable.
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#10 |
Member
Join Date: Feb 2021
City & State: Florida
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![]() ok, I'm giving NeoProgrammer a go and I'm getting this message
Code:
Programmer for MCU, AVR, SPI FLASH/EEPROM, I2C, Microwire, v2.1.0.19 Current programmer: CH341 IC not responding |
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#11 |
Stevedb
Join Date: Feb 2018
City & State: Schendelbeke/ East-Flanders
My Country: Belgium
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I'm a: Hobbyist Tech
Posts: 370
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![]() Hi
Yes the jumper is on the right place. It is very strange that he didn't see your chip. Do light the lights on your usb programmer. Did you try also read another bioschip? Maybe this chip is faulty. I got never had problems wit not reading the chip. |
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#12 |
Senior Member
Join Date: Feb 2021
City & State: Pickering Ontario
My Country: Canada
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![]() I haven't used the programmer you are using. I bought another inexpensive one on ebay called EZP2019. It's really more for hobby use but it has worked well for me.
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#13 |
Member
Join Date: Jan 2021
City & State: Osmaniye
My Country: Türkiye
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![]() if you are using cable between ch341a and chip, use it less than 3cm, check connections good. Don't let any weak pin connetions. when connections good you have to try other programs like neoprogrammer, asprogrammer or ch341 but different versions.
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#14 | |
Super Moderator
Join Date: Jan 2018
City & State: York
My Country: UK
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#15 |
Member
Join Date: Feb 2021
City & State: Florida
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![]() I solder the chip onto the board that comes with the usb board, instead of using the cable. I tested continuity with the meter and is good, but it is not recognized by the program...
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#16 | |
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Join Date: Apr 2021
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![]() Quote:
Good luck. |
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#17 | |
Member
Join Date: Feb 2021
City & State: Florida
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#18 |
Member
Join Date: Feb 2021
City & State: Florida
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![]() is there any way to verify on the programmer board that it is working?... does anyone has the schematic for ch341a
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#19 |
Member
Join Date: Feb 2021
City & State: Florida
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![]() I double checked the voltages of the chip while connected to ch341a and it has 3.3V in ping 8,7,3.. as specified on schematic... from there I don't know what else to check
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#20 |
Member
Join Date: Feb 2021
City & State: Florida
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![]() Finally got it working... thank all
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