[Test-Equipment] Help with HP 70000 Spectrum Analyzer

[Greg Werstiuk]

Would it be correct for those of reading your post to assume you have
removed all of the plug-ins and the over current condition still exists at
this point?

-
Greg

> -----Original Message-----
> From: test-equipment-bounces at mailman.qth.net 
> [mailto:test-equipment-bounces at mailman.qth.net] On Behalf Of 
> Chris Hackworth
> Sent: Thursday, May 22, 2008 8:27 AM
> To: Test-Equipment at mailman.qth.net
> Subject: [Test-Equipment] Help with HP 70000 Spectrum Analyzer
> 
> Greetings all,
> 
>   I have come into the possession of a HP 70000 Spectrum 
> Analyzer, consisting of the 70004A display, 70902A IF module, 
> 70900B Controller,  a 70001A mainframe with the 70310A 
> Precision Oscillator, 70600A preselector, all connecting 
> cables, manuals and 70905B Rf section (50Khz to 22 Ghz). I 
> got it for the princely sum of nothing, just haul it off the 
> company property because it was broken. The power supply in 
> the 70001A mainframe is showing an over current fault. I 
> checked the trip level of this alarm and it is set correctly. 
> Anyone else have a problem like this? Nothing on the power 
> supply card looks burnt or overheated, so I am thinking there 
> is a bad semiconductor somewhere on the board. The HP manual 
> reccomends replacing the power supply, but there is no way 
> that is going to happen.
> 
> Thanks,
> Chris N8PHU
> ET1(SW) USN (Ret)
> Chief transmitter Heavy SES-Americom
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