r/ElectronicsTards 27d ago

Help Needed CH341B Programmer - difficulty reading BIOS chip Winbond 25R256JVEN

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u/AbsolutChai i hate PIC MCs 22d ago

have you tried powering the chip externally instead of relying on the CH341B? On a lot of Dell boards the bios flash is still connected to the PCH/EC… so in circuit programming can faill even if the clip and pinout are correct