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[Console Repair/Mod Center / IFU Backup Memory corrupted?]

I got this PC Engine/CDROM2/IFU combo, but the memory backup in the IFU seem to be corrupted, the images are from the memory manager, all the texts has this lines over, when I try to format it does nothing.

HuCard games works great but games that uses the Backup memory cant save, doesnt detect it, the CDRom games doesnt work at all, the disk dont spin at all and after a little while just got "please set disk".

I know the PC Engine and CDROM2 works fine because they work flawlessly on another IFU I have.

I try with a TenoKoe Bank but it says that doesn't find any memory backup at all!

Then I use the BRAM TOOL and all I got was this "BRAM IS NOT PRESENT", so I replaced the supercapacitor but still the same. Its possible that the BRAM chip got corrupted?

I dont know if doing the FRAM mod will solve my problem, I dont want to mess with it because I think is way over my soldering skills.

So does someone had an idea whats wrong with it and how to solve it?

Thanks!