Hey guys I went on my own replacing the epprom however when I was soldering the epprom one of the connections came off and I was wondering If I could run a jumper to it. When looking at the board it's third pin going from left to right on the side of the chip with the recessed dot. Please help me so I can get it working. Btw I know I need the epprom because I tested it before soldering and it worked and when I went to solder it the connection came off
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Re: Vizio e321vl u18 chip pinouts
Post a good close up photo of the damaged area of the board. We can try to see where you can run a jumper to. -
Re: Vizio e321vl u18 chip pinouts
You have damaged more than one pad there, by the looks of it.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Vizio e321vl u18 chip pinouts
What's the part# for U18?Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Vizio e321vl u18 chip pinouts
I believe this is it MX25L6406E. I would greatly appreciate it if someone could use an ohm meter and find where that trace leads to so I can solder a jumper to itComment
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Re: Vizio e321vl u18 chip pinouts
I will check the datasheet and get back to you.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Vizio e321vl u18 chip pinouts
Pin 3 may be connected to the ground (pin 4) if you do not require the TV to be able to update its firmware through the user interface or service port.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Vizio e321vl u18 chip pinouts
How do I know the pin number? What number is the one I have circled?Comment
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Re: Vizio e321vl u18 chip pinouts
pin 1 is marked with a dot, then count right, when you reach the end of one side, count from the same end of one side backwards.
e.g.
8 7 6 5
1 2 3 4Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Vizio e321vl u18 chip pinouts
Also there on the opposite site of the one circled when you look at the picture the first 2 pins on the left are bridged somewhere but not by the pads i checked are they suppose to be?Comment
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Re: Vizio e321vl u18 chip pinouts
A bridge between #1 and #2 does not make sense...Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Vizio e321vl u18 chip pinouts
I mean 8 and 7Comment
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Re: Vizio e321vl u18 chip pinouts
That makes sense. Both go to Vcc, or the supply voltage for the chip, which disables it's HOLD feature.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Vizio e321vl u18 chip pinouts
Yes, IF the pad is definitely destroyed.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Vizio e321vl u18 chip pinouts
It is it completely came offComment
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Re: Vizio e321vl u18 chip pinouts
OK, then that is fine.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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This is a guide that I am writing for helping others to replace their MEC1503 EC chip if it breaks (or to get around an inconvenient prompt to the BIOS). This forum has been extremely helpful to me so I would like to contribute to help others. I will tell you right now that this task is very difficult to do. You MUST have experience and tools to do precision micro-soldering, BGA reballing, trace repair, and general laptop repair skills.
There are some specialty tools needed to do this task. The replacement MEC1503 chips can be acquired from Aliexpress. Do not buy the bare chips as... -
Hi
I have a very strange issue with the BIOS SPI chip of an ASRock B650M PRO RS motherboard.
The SPI chip is an Winbond 25Q256JWEQ model (1V8).
The motherbaord doas not POST - it lits only CPU and DRAM EZ Debug Leds, and stays that way forever.
The Flashback function of the motherbaord is also not working, despite all instructions followed correctly - I'm 100% sure of this.
I have then desoldered the chip, backupped the contents, and tried to earease the chip in order to program stock image, but the chip is locked by status registers SREG2 (TB) and SREG6... -
Common SPI bios chip programming Questions and Answers
----------------------------------------------------------
Q: I have a bios request,i can`t post my backup as i can`t read from the chip.
A: If you can`t read from it how do you expect to write to it ?.
Q: Why is my bios chip unreadable ?.
A: The programmer is faulty or has a worn or broken zif socket.
The USB cable is frayed,connector pins worn or some other physical damage.
Not enough amperage or voltage to power the programmer properly.
Bad...09-02-2021, 04:40 PM -
Long story short:
- dad converted Asus Chromebox CN62 into Windows compatible, with mrchromebox BIOS, years and years ago
- gave the computer to his son a couple years later
- son now decided to revert it to Chrome OS, to sell it as original (re-writing BIOS with the backup one created by his dad)
- too lazy to remove the board from the case, thought a voltage regulator was the BIOS chip (you know... it has 8 legs)
(seems like the story was not that short)
He used alligator clips to read the chip. No luck reading it. Removed chip and placed on a SOC-8... -
Hello, anyone here have updated ezp2023+ chip database in .dat file format.
I need to add w25q256jveq chip but I do not know what data should I type.
I'm using the ezp chip dabase editor posted from here https://www.badcaps.net/forum/troubl...ro-programmers
The currenty unit model that I am trying to detect is HP elitebook 640 g9 which is currently locked on admin bios....11-25-2024, 12:53 AM
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