LeCroy 9400 malfunction - diyAudio
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Old 10th May 2010, 01:04 PM   #1
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Default LeCroy 9400 malfunction


has anyone any experience with the LeCroy 9400 scope, especially concerning typical failures & fixes?

I bought one for a ridiculously low amount in an antique shop, but one of the channels is defective. The input signal gets to the ADC board intact but the ADC only picks up noise and hum, as if its input were floating. I haven't been able to pinpoint the failure any more than this.

Never send a human to do a machine's job. --Agent Smith
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Old 10th May 2010, 02:29 PM   #2
star882 is offline star882  United States
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Check for bad connections.
"Fully on MOSFET = closed switch, Fully off MOSFET = open switch, Half on MOSFET = poor imitation of Tiffany Yep." - also applies to IGBTs!
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