FIXED Alternate GND for Demon on Corona 16mb

[ExBoxHax]

Where can I solder to on the corona 16mb motherboard other than on the outside of the motherboard? I'm not getting clean NAND reads / writes using the very outside of the mobo where the copper is I keep getting E71's and the NANDs aren't matching back up when I read them back.



any suggestions?

 

[Antalpromille]

As long as you have gotten a good weld on that ground plane you should be good. If you are getting read/write issues i realy think your problem is somewhere else, but i guess your pro installer already knows this

 

[ExBoxHax]

well my usb board is grounded, I really don't know what else it could be besides that or the cable.

 

[jsinger47]

It is safe to say that ground isn't the issue. E71 is typically mishandling of bad blocks

In the case of a spelling error, I blame Tapatalk.

 

[ExBoxHax]

It is safe to say that ground isn't the issue. E71 is typically mishandling of bad blocks

In the case of a spelling error, I blame Tapatalk.

There aren't any bad blocks in the NAND before the write, but once I write to the demon they are all over the place and never match up with the original when I read them back.

here's the log from demon toolbox I just programmed it directly plugged in via mini usb

***** NAND-Flash Information *****


Manufacturer:                Hynix
Device:                      HY27US08281A
Device Id:                   0xAD73
Number of Blocks:            1024
Number of Pages per Block:   32
Page Size:                   528 bytes
Number of Invalid Blocks:    0


Loading image.
Remapping invalid blocks.
Erasing.
Marking invalid blocks.
Programming.
Programming completed successfully in 30 seconds!

and same result.

 

[ExBoxHax]

I figured it out. I had moved the NAND on the demon chip off one of the solder pads earlier when I was lifting it with heat and that's why it wasn't writing properly, fitted a new demon and it fired right up. Gotta be more gentle with my lifts, or really should install right the first time so I don't have to lift. Slowly getting there.