Discussion Category: Centrifuge
dead to the world
The unit is just dead. The fuses are fins and I can track the power across the board a little way but then I would need a schematic to chase it any further. I was hoping some one ran across something similar and may have a suggestion. Thanks
Reply bycheck out http://www.labwrench.com/?community.posts/threadNo/151192/subject/wil-not-power-up/, like
"Usual cause is a dried-out 22uF capacitor on the main "freq converter" PCB, the one between that 5V regulator in the TO-220 pkg, and the UC2844 surface-mt chip.
More detail on other replies here, for 5415R, 5415D"
You could also try medwrench
Reply byThanks very much that did the trick. Now it powers up but it gives me an error 8. At least I can trouble shoot that easier.
thanks again very much
jeremy
Reply byDid you ever troubleshoot the Error 8? Wondering if you got it working or if you tried anything. Thanks!
Reply byNo, but the manual says it's the same as Error 7. The run-down on that is:
Er 7
Overspeed control. Replace Converter PCB.
Er 7-1
Maximum speed for rotor exceeded. See Er 7.
Er 7-2
Speed deviates more than ±800 rpm from nominal value.
– Check mains voltage .
– Check concentric run of motor .
– Check/replace motor.
– Replace Converter PCB.
Reply byReply byThe 22ufd capacitor which is located right next to the T0220 5 volt regulator - the leads on the bottom are obstructed by the large metal component. Does this metal component need to be removed to get at the capacitor leads? There are 23 wire leads that look like they need to be unsoldered to remove the piece.