Products > Test Equipment
Siglent SDS1104X-E noisy fan replacement
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Neutrion:
Hi AdiGital!
Do I see it right that the Rubycon caps are gone in the power supply? When was your scope built? What kind of caps do you have?

When I measured the FPGA heatsink with the original cooling in a closed house, the FPGA temp was much higher than that (Don't remember right but around 50-60 degree Celsius) and the ADC also around 60.
Are you sure that you attached the probes right? I measured it with a BM789 with original probes, and didn't even stick it to the metal correctly.
Would be an interesting experiment to see whether the ADC would might be less noisier with a heatsink and much lower temp. Did you try to not to destroy the warranty sticker?
ceut:

--- Quote from: tautech ---
--- End quote ---
Hello !
Thanks to @tautech, I have bought a brand new Siglent SDS1104X-E but super noisy fan  :-[
I use it at home for hobby, I live in a small apartement without any garage or lab, so this one is really annoying me  :-\

He gaves me the link to this topic, so I have just tearing down my DSO to lower the fan voltage which seems to be the only solution available.

Here are some photos of the beginning of the teardown.
>I use my (great and beautiful  8) ) Xiaomi Soccas hairdryer to remove the sticker  :-+
>Then doing some maths to get the 9V power with my Siglent silent ;) PSU

Now thinking about which solution I will use inside it, without doing any irreversible mods for the 3-years warranty.
So I will post my thought later....
tautech:
At just 57mA fan draw use a LM7809 or LM78L09.
Best to KISS.  ;)
Muttley Snickers:

--- Quote from: ceut on March 18, 2022, 09:05:51 pm ---Thanks to @tautech, I have bought a brand new Siglent SDS1104X-E but super noisy fan  :-[

--- End quote ---
:palm:
ceut:

--- Quote from: Muttley Snickers on March 18, 2022, 09:53:44 pm ---
--- Quote from: ceut on March 18, 2022, 09:05:51 pm ---Thanks to @tautech, I have bought a brand new Siglent SDS1104X-E but super noisy fan  :-[

--- End quote ---
:palm:

--- End quote ---

I was saying Thanks for Tautech to helping me to choose between Rigol anns Siglent models, and give me this topic link  ;)
Not for the noisy fan: that was a big (and bad) surprise when I switched it on yesterday for the first time ...
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