Products > Test Equipment
Siglent SPD4306X Quality
aarons:
Yeah, mine just has a single fan at the back. I ordered mine from Siglent in September, so not that long ago. I assume there was just a random shorter standoff in the bin of standoffs or something like that.
aarons:
Upon further examination of the fan in this supply, it appears it is a non-standard 4-wire fan. The additional 2 wires are hooked up to two thermistors in parallel, one on each side of the heatsink. The fan speed control apparently is happening inside the fan itself, so replacing this fan won't work unless I want one that is constantly running at full speed.
It's an odd design. The fan power comes from the front panel as a 4 wire connector that ls the same JST XH as the fan itself, but those 4 wires are +14, +14, GND, GND, which is then regulated to 12 on the rear board for the fan.
Anyway, now I'm trying to see if I can source a replacement fan from Siglent or D-Fan (the manufacturer of the fan) since I think it's a customized part.
BILLPOD:
Good Morning Aarons,
... I figured I'd replace the fan with a noctua fan to solve that problem (fan is ordered, should be an easy job.)
So didn't the Noctua fan work, since you now want a Siglent OEM fan :-//
aarons:
--- Quote from: BILLPOD on December 06, 2024, 06:44:19 pm ---Good Morning Aarons,
So didn't the Noctua fan work, since you now want a Siglent OEM fan :-//
--- End quote ---
That's right. I saw a 4-wire fan and assumed it was standard, but it is not.
KungFuJosh:
--- Quote from: aarons on December 06, 2024, 08:14:46 pm ---That's right. I saw a 4-wire fan and assumed it was standard, but it is not.
--- End quote ---
Can you share some photos of the stock fan and the PCB connector?
Thanks,
Josh
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