Electronics > Repair
Lecroy wavesurfer 3024 fail to boot
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ranvocd1:
Hey I actually have a broken shaft on my potentiometer for a basically similar device (3074) but you are the only one that did an almost to full teardown. Were you able to remove the front black faceplate? It seems like two screws that are used to mount the display are somehow also holding the faceplate, preventing the removal of the faceplate regardless of how much I pull or wiggle. I did not want to force it open in fear of breaking the whole front face plate on the stuck mounts and I have tried to peer in with a flashlight to see if there is a clip or anything but no luck... just two posts that seemed like they are screwed in, but inaccessible.
tautech:

--- Quote from: ranvocd1 on June 14, 2024, 05:25:03 am ---Hey I actually have a broken shaft on my potentiometer for a basically similar device (3074) but you are the only one that did an almost to full teardown. Were you able to remove the front black faceplate? It seems like two screws that are used to mount the display are somehow also holding the faceplate, preventing the removal of the faceplate regardless of how much I pull or wiggle. I did not want to force it open in fear of breaking the whole front face plate on the stuck mounts and I have tried to peer in with a flashlight to see if there is a clip or anything but no luck... just two posts that seemed like they are screwed in, but inaccessible.

--- End quote ---
Welcome to the forum.

Remove the model decal/sticker and you should find additional securing screws behind it.
ranvocd1:
Thanks for the information, did not seem like it was a sticker initially since it was very tight. Since you are familiar with Siglent, Would you happen to know if this individual board can be sourced or is that not possible?
tautech:

--- Quote from: ranvocd1 on June 15, 2024, 02:19:56 am ---Thanks for the information, did not seem like it was a sticker initially since it was very tight. Since you are familiar with Siglent, Would you happen to know if this individual board can be sourced or is that not possible?

--- End quote ---
Maybe via Siglent NA however these older SDS3000 (China only model) have been discontinued and I have no idea of parts stocks.
Maybe the same encoder PCB was used in the later 3000X models (IIRC Z in LeCroy) and that's an exercise for you to investigate.

What's wrong with the PCB ?
You should be able to find an equivalent encoder.
ranvocd1:
Though I do think I can find an equivalent encoder when removed and by researching the part reference, I do not think I have the proper equipment nor skills to properly remove potentiometers that are SMD mounted without potentially damaging the board. SMD resistors, capacitors, inductors I can do due to the small pad size and use of 2 pins, not much solder removal involved.
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