Good evening, can you please help me?
I am using the CH341A programmer to flash a BIOS chip, but even without the BIOS chip inserted, pins 7 and 8 show continuity (beep). I have tested with two different programmers, and the result is the same.
With the chip soldered and connected to the PC, the software shows a "programmer not connected" warning, and I notice that the red power LED dims.
I have read that this programmer works only with 5V, while this chip requires 3.3V, and that a modification is necessary. Could you help me figure out how to flash this...
nunofcc
Member
Last Activity: 04-23-2025, 09:27 AM
Joined: 07-08-2019
Location: porto
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Good morning,
I would like to thank you for your quick response. I will test it and then post the results here. Thank you very much to everyone....Leave a comment:
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Good afternoon, everyone. I apologize for writing in Portuguese. I can't access the BIOS chip. I desoldered the chip from the board, connected it to the CH341A programmer, but the power light on the programmer dims, and it doesn't detect any chip. After analyzing, I found that pins 7 and 8 are shorted, and the chip gets very hot. Can you help me even without access to the BIOS file? To flash it onto a new chip?Leave a comment:
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[LEFT][COLOR=#111111][FONT=Arial][SIZE=13px]Ola pessoal, por favor preciso da vossa ajuda para resolver o meu problema[/SIZE][/FONT][/COLOR][/LEFT]...
[LEFT][COLOR=#111111][FONT=Arial][SIZE=13px]surface pro 5 1796 - 128gb, 8gb ram, i5.[/SIZE][/FONT][/COLOR][/LEFT]
[LEFT][COLOR=#111111][FONT=Arial][SIZE=13px]serial 029944792053[/SIZE][/FONT][/COLOR][/LEFT]
[LEFT][COLOR=#111111][FONT=Arial][SIZE=13px]Fica com logo por 2 segundos e desliga. Acredito que o problema é arquivo da BIOS. Alguem me pode enviar o arquivo da bios original, por favor?
Muito agradecidoLeave a comment:
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Re: Help request to find smd transistor reference.
good afternoon,
very grateful for your help. I will search for the component with this reference and I will test it. then post here if it worked or not. thank you....Leave a comment:
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Re: Help request to find smd transistor reference.
good afternoon, I tested one with the same reference that is on the same circuit. what's bad is Q1, but Q2 and Q3 are the same. I removed the Q2 to test. what was tested is good. Sincerely...Leave a comment:
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Re: Help request to find smd transistor reference.
Since Q1, Q2 and Q3 are the same according to what I was able to visualize. SincerelyLeave a comment:
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Re: Help request to find smd transistor reference.
Good afternoon, the sign is ok.
I removed it from the plate and found the following values in the image.
I would like to know a commercial reference of any compatible.
Grateful for your attention...Leave a comment:
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Logitech G29 Help request to find smd transistor reference.
Good night,
I am going to ask your help to find out what is the reference of this smd transistor. Or what is an equivalent transistor?
Thank you for your help.... -
Re: Help to identify electronic component.
Good afternoon,
I did as indicated by the f2 key right after starting. but it does nothing. the laptop starts with the black screen and the white cursor flashing in the upper left corner....Leave a comment:
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Re: Help to identify electronic component.
Good afternoon.
I checked all the voltages on the indicated pins, they are all correct as in the diagram....Leave a comment:
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Re: Help to identify electronic component.
Good afternoon.
I did everything I was told. I took the battery out of the bios and waited a few hours. I took ram and disk the screen is completely black. Only with the ram a small flashing line appears in the image. Does anyone have any idea what it might be?...Leave a comment:
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Re: Help to identify electronic component.
Good Morning.
The problem I have is: the notebook turns on and the screen also turns on but there is no image, it is all black with a small white stroke in the corner blinking.
Thank you....Leave a comment:
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Re: Help to identify electronic component.
how can I read the reference of this coil?Leave a comment:
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Re: Help to identify electronic component.
where can i find this part number? can someone help me? it is an acer E5-575G.Leave a comment:
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Re: Help to identify electronic component.
Thanks a lot for the help. has no number or reference on the motherboard. the problem is notebook has power but does not give an image. I already reprogrammed the bios but it didn't work. I noticed that one of the coils is very hot, is it normal?Leave a comment:
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Help to identify electronic component.
Good afternoon, I come to ask your help to identify which is the electronic component that is marked in red. It is found on a notebook motherboard.
What is the component called?
And if it's normal to overheat?... -
Re: Schematic Acer Aspire E 15, modelo E5 575G-511A.
Good afternoon I am very grateful for your help thank you very much.
Do not want to abuse the file in boardview format? Because the board has no notes.
graciously...Last edited by nunofcc; 06-20-2020, 12:49 PM.Leave a comment:
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Schematic Acer Aspire E 15, modelo E5 575G-511A.
Good afternoon, someone can get me the schematic of the Acer Aspire E 15 notebook, model E5 575G-511A.
Motherboard reference: DAZAAMB16E0 REV: E
thank you -
Re: PEDIDO Bios Acer Aspire E5 - 575G - 511A
The voltages I have are: pin 1,3,7 and 8 - 3,8v
and pin 2 - 2,90v
and 4, 5 and 6 - 0v....Last edited by nunofcc; 06-15-2020, 09:42 AM.Leave a comment:
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