Author Topic: My 34970A keeps rebooting as soon as i power it on  (Read 239 times)

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Offline Skyllet20

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My 34970A keeps rebooting as soon as i power it on
« on: August 22, 2019, 06:24:00 am »
Hello there,

i've been using the data acquisitor 34970A for years, and today when i powered it on, it just kept rebooting without allowing me to acces any of its functions.

I've tried to do a factory reboot and a self test run, but it just beeps and keeps rebooting after that.

Has anyone a clue about what is happening?

Here's a video of my problem

 

Offline HighVoltage

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  • Country: de
Re: My 34970A keeps rebooting as soon as i power it on
« Reply #1 on: August 22, 2019, 08:53:09 am »
Remove all plugin cards to make sure it is not based on a faulty card?

The service manual is available for download from Keysight for these instruments.
Open it up and check all power supply rails first, may be you are lucky and its only a faulty tantalum.


There are 3 kinds of people in this world, those who can count and those who can not.
 

Offline nfmax

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  • Country: gb
Re: My 34970A keeps rebooting as soon as i power it on
« Reply #2 on: August 22, 2019, 03:30:47 pm »
Also check the cable between the main board and the front panel - the soft power switch runs through this and can give rise to intermittents. IIRC, it is a transition on the main PCB, not a connector, but if you can push the top part of the assembly down by hand, the IDC joints may have worked loose.
 


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