Products > Test Equipment
Rigol MSO 5000 hardware/software revisions
Martin72:
It´s definitely lower rpm, as if the fan got now less voltage than before - would speak for a resistor, but I couldn´t see anyone additional in the wire.
Maybe they´ve exchanged the fan....ah, want to take a look inside so badly. 8)
Martin72:
--- Quote ---Maybe they´ve exchanged the fan.
--- End quote ---
Couldn´t resist any longer….
After open it up (without damaging the sticker…) I take a close look to the fan - Nothing.
No additional parts, no "fresh" solderpads, nothing....
So they must Exchange the fan - No, it´s the same Sunon MagLev as before, 12V 3000rpm.
So I switch the scope on - this is never 3000 rpm….
Measure the voltage at the fan-connector, 6.5Vdc.
This make sense, voltage is reduced for lower rpm.
But the "jittering" on the display of my fluke made me curious and so I plug in a probe and measure the voltage with scope:
Aha... ;)
hhappy1:
--- Quote from: Martin72 on July 16, 2019, 11:04:47 am ---
--- Quote ---Maybe they´ve exchanged the fan.
--- End quote ---
Couldn´t resist any longer….
After open it up (without damaging the sticker…) I take a close look to the fan - Nothing.
No additional parts, no "fresh" solderpads, nothing....
So they must Exchange the fan - No, it´s the same Sunon MagLev as before, 12V 3000rpm.
So I switch the scope on - this is never 3000 rpm….
Measure the voltage at the fan-connector, 6.5Vdc.
This make sense, voltage is reduced for lower rpm.
But the "jittering" on the display of my fluke made me curious and so I plug in a probe and measure the voltage with scope:
Aha... ;)
--- End quote ---
Ho~~ How do I remove a sticker without damaging it?
I'll measure the voltage of my product.
Martin72:
By heaten it up with e.g. a heatgun.
90°C are enough, too high will damage it.
Slowly heaten up, then lift it on one side carefully with a razorblade or similar thin thing.
alexvg:
--- Quote from: Martin72 on July 16, 2019, 02:30:54 pm ---By heaten it up with e.g. a heatgun.
90°C are enough, too high will damage it.
Slowly heaten up, then lift it on one side carefully with a razorblade or similar thin thing.
--- End quote ---
I've leaved the device running for 3-4 hours (the device's case is been hot). And I've removed the sticker with the back paper of a bandage (the non-adherent side or anything like that). It takes 20-30 seconds to remove it completely.
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