LeCroy Wavesurfer 3074 won't boot - Page 1
Forum section: electronics / repair

author: Skr
author_rank: Newbie
timestamp: March 09, 2024, 02:53:45 pm
content: Hello,First of all, I am aware that other threads regarding the Wavesurfer 3000 family booting issues exist. However I believe my problem is different, and the solutions provided there did not work.I was able to get a WS3074 that was getting discarded because it was "not functional". So I tried to look into it.It does not boot at all. All I get is the boot logo, that never disappears. I believe it is boot looping very early in the booting stage, only showing the logo (I'll explain why later).I tried re-flashing it, and using the recovery files givenhere.I did use an MBR FAT micro-SD card. However, the oscilloscope never boot and tries to load the files in a loop. As it if it was rebooting as soon as the files were loaded (thus explaining why I believe it is boot looping early)..I also tried creating an account on LeCroy's website to be able to download there or to contact support to get a recovery disk that could be more recent or more adapted. However they did not approve it as my "school's name is in French", even though it's not really the case, it's just literally its name. Tried contacting them by phone but no luck at the moment.I also completely disassembled it, just to do some basics checks (visual inspection, PSU verification), but everything seemed fine.It's not a NAND flash issue as altering the boot logo in the recovery disk does changes it until reflashing the original one (and I believe there is only one flash memory for storing WinCE).So here I am, I was wondering if anyone would've had an idea regarding what the issue could be.And more specifically, if anyone has a different recovery disk archive.At this point, I am suspecting a possible hardware issue but I guessed it couldn't hurt to ask!In any case, thank you in advance.

author: tautech
author_rank: Super Contributor
timestamp: March 09, 2024, 06:57:09 pm
content: Welcome to the forum.Once the recovery files have been loaded and the scope attempts to boot it may be they are reloading again.Remove SD card and try to boot as normal.

author: Skr
author_rank: Newbie
timestamp: March 09, 2024, 11:29:43 pm
content: Thank you!And I did try that, multiple and multiple times, with no luck unfortunately...

author: tautech
author_rank: Super Contributor
timestamp: March 09, 2024, 11:49:19 pm
content: Quote from: Skr on March 09, 2024, 11:29:43 pmAnd Math presses also ?

author: Skr
author_rank: Newbie
timestamp: March 10, 2024, 12:56:17 am
content: I did try the procedure fromhere, also by holding, and even tried it with all of the buttons really, but I was not able to have any different behavior.Furthermore, in the original thread I linked, kinero explains:Quote from: kineroWithout seeing this post at first I also did that, which I guess could've messed something up (even though I already had the same behavior before that, and that doing that also lead to the same boot loop - with the added format step). However like I said I am unable to get in touch with LeCroy...I might try to solder an FTDI/UART-USB on the MoBo to see if I can get anything from the serial out, like mentioned in the same thread. However I will not be able to test this until Monday at best.

author: tooki
author_rank: Super Contributor
timestamp: March 10, 2024, 06:15:48 pm
content: Quote from: Skr on March 09, 2024, 02:53:45 pmWhat they probably meant is one of two things:1. They want the name of the school translated (e.g. “University of Lausanne” instead of “Université de Lausanne”).2. They simply don’t want accented characters, and want you to use plain characters instead. (E.g. “Universite de Lausanne” instead of “ Université de Lausanne”).Of course, IMHO they should have either fixed it for you or told you exactly what they mean, but frankly I’m not surprised at LeCroy acting like that… :/I suggest reaching out to a LeCroy sales representative. They may be able to help further.

author: Skr
author_rank: Newbie
timestamp: March 13, 2024, 01:35:57 pm
content: Thanks! And they wanted the school's initials.They gave me another recovery disk, that's older than the one provided in the original thread I linked...And it does not help, I have the same problem. I even believe the scope might now be bricked as I can't even get the boot splash screen, nor is it displaying that it is loading the SD card files. Just a plain black screen.I believe the FPGA used as a display driver might have been badly reprogrammed (as a bitstream appears present in the recovery disk)?...

author: bson
author_rank: Unknown
timestamp: March 14, 2024, 12:10:57 am
content: Quote from: Skr on March 13, 2024, 01:35:57 pmI had mine do this also, but pressing the Math button brought it back.

author: Skr
author_rank: Newbie
timestamp: March 15, 2024, 05:29:45 pm
content: Did you hold it before and while starting it, or did you mash it repeatedly?Thanks!

author: bson
author_rank: Unknown
timestamp: March 15, 2024, 11:41:33 pm
content: Quote from: Skr on March 15, 2024, 05:29:45 pmI held it while powering on...