How should I read this chip inductor?
It is used on the laptop motherboard.
One of the same two burned down.
I looked it up by myself, but I can't read it after R22.
One of the same two burned down.
I looked it up by myself, but I can't read it after R22.
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find out why it burned before you replace it - you may have a shorted part overloading it.
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The water dropped and I had a problem with that R22, and after removing it, the problem disappeared. It was connected just before the bios chip past the superio, and voltage input to the bios chip was not possible.
The board pattern is a little damaged, so I scraped it on both sides and gave it a very weak voltage, and it's booted.
Thanks for your concern.Comment
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This might be the part VCHW084T-R22MS5 check the dimensionsLast edited by R_J; 01-04-2025, 12:39 PM.Comment
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R22 = 0.22uH
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Thank you !
I bought the r22 resistance, checked and replaced the same after waveform inspection with an old oscilloscope, and it booted. Thanks a lot!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... -
Common SPI bios chip programming Questions and Answers
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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 -
Hello, anyone here have updated ezp2023+ chip database in .dat file format.
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I'm using the ezp chip dabase editor posted from here https://www.badcaps.net/forum/troubl...ro-programmers
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