RB433AH freezes

Hardware MikroTik hardware general
1

Hello!
I searched forum for error like in my RB433 but nothing similar.
After some random times routerboard freezes and LEDs LD501-504 are ON

All voltages are OK, I replaced all elcos with new one.
Format NAND, netinstall with OS 6.19, no luck.
Some diagnostic:

your choice: t - do memory testing


This may take some time, ESC aborts testing

Cached memory

Fill memory with addresses:
  Filling memory...  done
  Testing memory...  done
Random data test:
  Filling memory...  done
  Testing memory...  done
Invert random data test:
  Filling memory...  done

  Waiting 60 

/////cut/////

  Waiting 00 OK
  Testing memory...  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

Uncached memory

Fill memory with addresses:
  Filling memory...  done
  Testing memory...  done
Random data test:
  Filling memory...  done
  Testing memory...  done
Invert random data test:
  Filling memory...  done

  Waiting 60 

 /////cut/////

  Waiting 00 OK
  Testing memory...  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

Mem test is OK but there is some bad-blocks:

                   uptime: 3m38s
                  version: 6.19
               build-time: Aug/26/2014 14:05:51
              free-memory: 108.5MiB
             total-memory: 128.0MiB
                      cpu: MIPS 24Kc V7.4
                cpu-count: 1
            cpu-frequency: 680MHz
                 cpu-load: 0%
           free-hdd-space: 488.8MiB
          total-hdd-space: 512.0MiB
  write-sect-since-reboot: 919
         write-sect-total: 919
               bad-blocks: 0.8%
        architecture-name: mipsbe
               board-name: RB433AH
                 platform: MikroTik

0.8% , not big but there it is.
So far I cant find any reason why that occurs at random time.
Works longer when it is “cold” !?
Bad joint or bad 40MHz oscillator !?
Any idea are welcome !

2

I haven’t had any problems with 6.19 on the 433 series yet, but it never hurts to downgrade and rule out the possibility of a software bug. Is downgrading an option for you?

3

Any option is good if I can get it work again !
:confused:

Downgrade:

›m›36m/system resource›m> ›m›35mprint›m

                   uptime: 1m38s
                  version: "4.17"
              free-memory: 114416kB
             total-memory: 127400kB
                      cpu: "MIPS 24K V7.4"
                cpu-count: 1
            cpu-frequency: 680MHz
                 cpu-load: 0
           free-hdd-space: 468352kB
          total-hdd-space: 520192kB
  write-sect-since-reboot: 91
         write-sect-total: 342
               bad-blocks: 0.8%
        architecture-name: "mipsbe"
               board-name: "RB433AH"
                 platform: "MikroTik"

After 3-5min LETs are on, router freeze,
LAN, serial, nothing works.
That is hardware problem but what!?