RB450G memory problem

Hi everyone,

I wonder if someone could comment on memory test on my RB450G:

It seems obvious that I have a stucked bit somewhere, because the difference in written and read value is always 2. Yet, all zeroes, all ones, all 5 and all A tests have passe without a problem.
How could that be possible? Is this a controller error, or memory chip error?


Uncached memory

Fill memory with addresses:
Filling memory… done
Testing memory… done
Random data test:
Filling memory… done
Testing memory…
Error in address=0xA8006404, W=0x479E2E55 R=0x479E2E57 X=0x00000002 done
Invert random data test:
Filling memory… done
Waiting 00 OK
Testing memory…
Error in address=0xA8141304, W=0x23FA5231 R=0x23FA5233 X=0x00000002
Error in address=0xA8276284, W=0x48062421 R=0x48062423 X=0x00000002
Error in address=0xA82BA314, W=0x431BD5D8 R=0x431BD5DA X=0x00000002
Error in address=0xA82ECE84, W=0xF4532C45 R=0xF4532C47 X=0x00000002
Error in address=0xA833F084, W=0xDFE0CBE1 R=0xDFE0CBE3 X=0x00000002
Error in address=0xA836C994, W=0x6CB810E1 R=0x6CB810E3 X=0x00000002
Error in address=0xA83ECA04, W=0x19BE0398 R=0x19BE039A X=0x00000002
Error in address=0xA8484194, W=0xD2F03F39 R=0xD2F03F3B X=0x00000002
Error in address=0xA84F4304, W=0xCB79BF05 R=0xCB79BF07 X=0x00000002
Error in address=0xA85AE294, W=0xC0C8BC8C R=0xC0C8BC8E X=0x00000002
Error in address=0xA872C594, W=0xF5EDD4A8 R=0xF5EDD4AA X=0x00000002
Error in address=0xA87CC204, W=0xB48C7785 R=0xB48C7787 X=0x00000002
Error in address=0xA884EA84, W=0xA7CF5751 R=0xA7CF5753 X=0x00000002
Error in address=0xA885D904, W=0x0CF249D5 R=0x0CF249D7 X=0x00000002
Error in address=0xA890FD84, W=0x525A4025 R=0x525A4027 X=0x00000002
Error in address=0xA8910D84, W=0xE8481095 R=0xE8481097 X=0x00000002
Error in address=0xA8992984, W=0x1FB5394C R=0x1FB5394E X=0x00000002
Error in address=0xA89B7304, W=0x19FD3AFD R=0x19FD3AFF X=0x00000002
Error in address=0xA8A23584, W=0x97910F2D R=0x97910F2F X=0x00000002
Error in address=0xA8B0A214, W=0xB2BE8BDC R=0xB2BE8BDE X=0x00000002
Error in address=0xA8D19094, W=0x5B286165 R=0x5B286167 X=0x00000002
Error in address=0xA8F48384, W=0x2255A091 R=0x2255A093 X=0x00000002
Error in address=0xA8FFA304, W=0xECAD3B21 R=0xECAD3B23 X=0x00000002
Error in address=0xA90A1904, W=0xDB633815 R=0xDB633817 X=0x00000002
Error in address=0xA90DCD84, W=0x0BC7C1E5 R=0x0BC7C1E7 X=0x00000002
Error in address=0xA94D7204, W=0x45740BD1 R=0x45740BD3 X=0x00000002
Error in address=0xA969E504, W=0x46258DBD R=0x46258DBF X=0x00000002
Error in address=0xA9E40184, W=0xE8A4DCB5 R=0xE8A4DCB7 X=0x00000002
Error in address=0xAA20C084, W=0x7C4C641D R=0x7C4C641F X=0x00000002
Error in address=0xAA4D4F04, W=0x49650588 R=0x4965058A X=0x00000002
Error in address=0xAA5B4804, W=0xB7B9E799 R=0xB7B9E79B X=0x00000002
Error in address=0xAAA41084, W=0x586828C1 R=0x586828C3 X=0x00000002
Error in address=0xAB41A914, W=0x76EBDA75 R=0x76EBDA77 X=0x00000002
Error in address=0xAB759A84, W=0x5376E83D R=0x5376E83F X=0x00000002
Error in address=0xAB796694, W=0x3AC5E7A8 R=0x3AC5E7AA X=0x00000002
Error in address=0xAC06C114, W=0xC6C377B9 R=0xC6C377BB X=0x00000002
Error in address=0xAC0B1B84, W=0xDB40DAF1 R=0xDB40DAF3 X=0x00000002
Error in address=0xAC174014, W=0x34F18064 R=0x34F18066 X=0x00000002
Error in address=0xAC27DD84, W=0x062AAC75 R=0x062AAC77 X=0x00000002
Error in address=0xAC35A394, W=0x709EA65D R=0x709EA65F X=0x00000002
Error in address=0xAC828F94, W=0xAC945CB9 R=0xAC945CBB X=0x00000002
Error in address=0xAC8A9684, W=0x6BD4B621 R=0x6BD4B623 X=0x00000002
Error in address=0xAC914804, W=0x907D35D0 R=0x907D35D2 X=0x00000002
Error in address=0xACAB8F14, W=0xD5AF853D R=0xD5AF853F X=0x00000002
Error in address=0xACB55F84, W=0xF2602165 R=0xF2602167 X=0x00000002
Error in address=0xACFCB384, W=0xFFCB0804 R=0xFFCB0806 X=0x00000002
Error in address=0xACFCC184, W=0xD35ED211 R=0xD35ED213 X=0x00000002
Error in address=0xAD585584, W=0xC6085835 R=0xC6085837 X=0x00000002
Error in address=0xAD666504, W=0x45FADFD0 R=0x45FADFD2 X=0x00000002
Error in address=0xAD877B14, W=0x4C4AED25 R=0x4C4AED27 X=0x00000002
Error in address=0xADB91484, W=0x2CAAB929 R=0x2CAAB92B X=0x00000002
Error in address=0xADCA2F84, W=0x00C34171 R=0x00C34173 X=0x00000002
Error in address=0xAE028384, W=0x25CF30D5 R=0x25CF30D7 X=0x00000002
Error in address=0xAE23CE04, W=0xF6FC116D R=0xF6FC116F X=0x00000002
Error in address=0xAE3BB384, W=0xDD1C6469 R=0xDD1C646B X=0x00000002
Error in address=0xAE88BC84, W=0x0A2AF189 R=0x0A2AF18B X=0x00000002
Error in address=0xAE932804, W=0x8B66134D R=0x8B66134F X=0x00000002
Error in address=0xAE9FE284, W=0x011F0E84 R=0x011F0E86 X=0x00000002
Error in address=0xAF1E9184, W=0x61567C81 R=0x61567C83 X=0x00000002
Error in address=0xAFB6E914, W=0x67508B95 R=0x67508B97 X=0x00000002 done
Fill memory with zeroes:
Filling memory… done
Testing memory… done
Fill memory with ones:
Filling memory… done
Testing memory… done
Fill memory with x55555555:
Filling memory… done
Testing memory… done
Fill memory with xaaaaaaaa:
Filling memory… done
Testing memory… done

What RouterOS and /system routerboard version do you use?
Do you have any real problems with the particular board, or only issue is memory test output?

Well, yes, this is a RB450G which has been sitting on my stock for almost 3 years, went finally into production as a replacement, worked for 7 days and died. I’ve not been able to boot anymore. I have tried to reinstall RouterOS in all known ways, and when everything failed, I have upgraded the boot firmware from 2.xx to 3.xx. Memory test option appeared, and I run it …

BR,
Ivo

Please post errors you get in console, when you are reinstalling RouterBOARD 450G by 6.27 Netintall.