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**dicky96** · 08-03-2022, 03:46 AM

Hi guys
I have the same problem as many of you - flashing white power LED, black screen and no Vddgt power rail

I have attached my eprom dump. On my PCB the eprom is actually a 25B127DSIG. My TL866 does not support this.

According to the schematic (attached if anyone wants it) the chip should be W25Q128JVSIQ. This is not on the list of supported IC either so I used W25Q128BV and it appears to have read it OK

Can one of you smart guys give me a good data file

My laptop is
Lenovo Ideapad S145-15IWL
81MV
MotherboardFv440/FS441/FS540 NM-C121
Rev 1.0
2018-12-12
CPU Core i5 8th gen

Schematic and Eprom dump

08-03-2022, 03:46 AM	#153
dicky96 Sun Seeker Join Date: Mar 2017 City & State: Sunny Gran Canaria My Country: Spain Line Voltage: 220V 50Hz I'm a: Professional Tech Posts: 1,399	Re: lenovo IdeaPad S145 bios needed Hi guys I have the same problem as many of you - flashing white power LED, black screen and no Vddgt power rail I have attached my eprom dump. On my PCB the eprom is actually a 25B127DSIG. My TL866 does not support this. According to the schematic (attached if anyone wants it) the chip should be W25Q128JVSIQ. This is not on the list of supported IC either so I used W25Q128BV and it appears to have read it OK Can one of you smart guys give me a good data file My laptop is Lenovo Ideapad S145-15IWL 81MV MotherboardFv440/FS441/FS540 NM-C121 Rev 1.0 2018-12-12 CPU Core i5 8th gen Schematic and Eprom dump __________________ Follow me on YouTube ------------------ Learn Electronics Repair https://www.youtube.com/channel/UCFX...R8UZ2vg/videos Last edited by SMDFlea; 04-10-2023 at 08:44 AM..