Re: [AMMRL] Bruker Avance III : No communication between the SGUs and Amplifiers

Is it possible that a fuse is broken? Check on the back side if there is a LED not on. They are easily overseen…

Greetings

Philipp

Hello Everyone,

I have a Bruker Avance III 400 MHz solid-state system circa 2010 (Cento5.11, Topspin 3.6.2), which developed over time a communication problem between the SGUs and the amplifiers. The CF proceeds seemingly without any problem, only to end up with an error message
‘No connection between SGUs and amplifiers found! Acquisition will not
be possible. The wiring may be incorrect, or the emergency stop
signal may be active. Please check the hardware and do‘cf’ again.’

Novisible problems with the hardware; all LEDs in front and back are green, no warning/flashing lights, and no connections have changed since the instrument was functioning. The ‘ha’ reveals no obvious problems either.

Last year, Bruker responded to the problem by replacing all the fans and filters in AQS/3, as well as the amplifiers. That resulted in about two months of stable work, but apparently didn’t solve the root problem. Now the instrument is back to the state of ‘No connection between SGUs and amplifiers…’ Numerous reboots didn’t move the problem.

I would be very grateful to hear all your suggestions for resolving the issue.
Thank you and best regards,

Igor
--
Igor Moudrakovski, PhD
Max-Planck Institute for Solid State Research
Heisenbergstr. 1, 70569 Stuttgart, Germany
Office 711-689-1963
400 NMR 711-689-1410
600 NMR 711-689-1054

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