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| Siglent SDS1000X HD 12bit DSO's |
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| hansibull:
Replacing the fan with a Noctua one is a quick job. But it would be interesting to know if the scope actually had built-in automatic fan control. To me, it looks like it's all there! Just curious, why didn't you check if you could connect your Noctua fan straigt to the motherboard? |
| Martin72:
I hadn't thought about it because it seems illogical to me to generate a fan controller on the board, but then install a non-controllable fan for “cost reasons”. In other words, I don't believe that a fan controller exists on the board. You can measure it if you have a second scope available. |
| tszaboo:
--- Quote from: Martin72 on September 03, 2024, 07:01:32 pm ---I hadn't thought about it because it seems illogical to me to generate a fan controller on the board, but then install a non-controllable fan for “cost reasons”. In other words, I don't believe that a fan controller exists on the board. You can measure it if you have a second scope available. --- End quote --- The "controller" is just a PWM signal with 5V pullup to tell the fan how fast to go. By the looks of it the circuit is right next to it on the picture, that SOT23. |
| Martin72:
That's why I wrote that he should measure. |
| KungFuJosh:
If the better fan costs 40 cents more, and the 4-pin connector costs 10 cents more, then multiply that 50 cents by 100,000 units or whatever they sell, and it adds up fast. 🤷 |
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