Electronics > Repair

Lecroy wavesurfer 3024 fail to boot

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bson:
My WS3054 has started acting up again and the micro-SD based recovery doesn't seem to help. It displays the logo and steps through "Upgrading Logo", "Upgrading FPGA", and "Upgrading Boot IMG" (or "Image", forget off hand as I'm typing this); it stops at the latter for 5 seconds or so, then starts over.  I take this to mean it failed and reset.  I've tried both 32GB and 8GB (SDHC) cards, MBR partition tabled, with a single primary partition set to active.  FAT32 with 16k and 8k extents, respectively. (I used diskpart on Win10.)  No dice, both cards behave exactly the same...
The file I have and used is WS3K_ACQ3ND_8.4.1.5.zip

I have a gut feel this means the NAND flash has too many errors for the CRC to be recoverable and it needs to be reformatted (presumably the bad sectors will be replaced).  But if I'm going to do that and go through a complete reformat and reinstall I might be better off replacing them (assuming not super high density BGA).  If BGA there might also be a detached or cracked ball...

Looking for ideas...

bson:

--- Quote from: analogRF on June 25, 2023, 04:50:38 pm ---I have not attempted 9.6.0.1 yet. I would like someone to confirm that it does indeed work for WS3000

--- End quote ---
Super belated comment... but yes, 9.6.0.1 is what I have on my non-Z 3054 and it worked great.  I assume you already figured out the answer, but maybe this is of some use to someone else coming across this thread in the future.

analogRF:

--- Quote from: bson on March 11, 2024, 11:42:01 pm ---My WS3054 has started acting up again and the micro-SD based recovery doesn't seem to help. It displays the logo and steps through "Upgrading Logo", "Upgrading FPGA", and "Upgrading Boot IMG" (or "Image", forget off hand as I'm typing this); it stops at the latter for 5 seconds or so, then starts over.  I take this to mean it failed and reset.  I've tried both 32GB and 8GB (SDHC) cards, MBR partition tabled, with a single primary partition set to active.  FAT32 with 16k and 8k extents, respectively. (I used diskpart on Win10.)  No dice, both cards behave exactly the same...
The file I have and used is WS3K_ACQ3ND_8.4.1.5.zip

I have a gut feel this means the NAND flash has too many errors for the CRC to be recoverable and it needs to be reformatted (presumably the bad sectors will be replaced).  But if I'm going to do that and go through a complete reformat and reinstall I might be better off replacing them (assuming not super high density BGA).  If BGA there might also be a detached or cracked ball...

Looking for ideas...

--- End quote ---

by "again" you mean you had done recovery before and it had worked for a while?

I think formatting the flash should fix it. In case you want to replace it, the FLASH chip is MT29C4G96MAZBACKD-5 (marking JW732)
but the board is HUGE and very thick, so personally I dont have the courage to replace that chip frankly  :scared: :scared:

bson:

--- Quote from: analogRF on March 12, 2024, 12:36:51 am ---by "again" you mean you had done recovery before and it had worked for a while?

I think formatting the flash should fix it. In case you want to replace it, the FLASH chip is MT29C4G96MAZBACKD-5 (marking JW732)
but the board is HUGE and very thick, so personally I dont have the courage to replace that chip frankly  :scared: :scared:

--- End quote ---
Yeah, got stuck in a boot loop before and I restored it back to working order.  This was about a year ago.

Will I need anything else other than rename '_format.bin' to 'format.bin'?  I see there's a 182MB file there (LecroyNK.up), is this some sort of compressed package file?  Or do I need some sort of separate installer or packages afterwards?

Also, if it's self-contained, which I assume it is - will it also recover the S/N, licenses and cal data from a more reliable or duplicate record?  If so I would guess it reverts to factory defaults plus licenses, so will need at least an auto cal.

And, yeah, I'd rather not start replacing chips.  But a 0.5mm QFP isn't a big deal, it's just fine-pitch BGAs that I've had mixed results with.

BTW, I'm astonished this scope is powered by a 1GHz Cortex-A8 from 2011, with its firmware fitting in something like a 185MB archive, even if compressed... simply astonishing.

analogRF:

--- Quote from: bson on March 12, 2024, 02:59:23 am ---
Will I need anything else other than rename '_format.bin' to 'format.bin'?  I see there's a 182MB file there (LecroyNK.up), is this some sort of compressed package file?  Or do I need some sort of separate installer or packages afterwards?

Also, if it's self-contained, which I assume it is - will it also recover the S/N, licenses and cal data from a more reliable or duplicate record?  If so I would guess it reverts to factory defaults plus licenses, so will need at least an auto cal.

And, yeah, I'd rather not start replacing chips.  But a 0.5mm QFP isn't a big deal, it's just fine-pitch BGAs that I've had mixed results with.

BTW, I'm astonished this scope is powered by a 1GHz Cortex-A8 from 2011, with its firmware fitting in something like a 185MB archive, even if compressed... simply astonishing.

--- End quote ---

yes just change to format.bin.
you will lose cal data and S/N and options. must be restored from EEPROM from the service menu (PW 9472) /BTD calibration/ restore BTD from EEPROM

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