Author Topic: Infiinium DSO 9104 power on failure.  (Read 759 times)

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Offline rtekalTopic starter

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Infiinium DSO 9104 power on failure.
« on: October 28, 2020, 08:21:15 am »
Hi,

I have a Agilent Infiinium DSO 9104 which fails to power up. Upon pressing the power button, The sequence 2 error led's glow pointing to a failure of the +1.2 volt , shutting down the supply. This voltage is monitored by U497 LTC2928. There are three cascaded monitoring circuits monitoring all the voltages on the acquisition board. All the on board supplies are sequentially switched on, monitored and then only the instrument boots up. The main +12 volt bulk supply is good.

The LED's in Seq 2 glows as follows.
LED's 1 & 2 : ON
LED's 3 & 4 : OFF.

Has anyone repaired the power supply failure on the acquisition board?

Regards
 

Offline F1GWR

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Re: Infiinium DSO 9104 power on failure.
« Reply #1 on: August 14, 2024, 09:05:38 am »
Hi,

Almost same issue here with my DSO9404A. Instead I'm in sequence 3 with - 8.3 V "command" failure (sequ 3 LED 3 on).

Did you experience any success on your side?

 

Offline rtekalTopic starter

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Re: Infiinium DSO 9104 power on failure.
« Reply #2 on: September 04, 2024, 04:09:24 am »
No. Got the Acquisition board replaced

Regards
 


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