[Test-Equipment] HP-334A

[DW Holtman]

Dale,

Thank you for taking the time to respond to my E-Mail. I will start where 
you indicated, and go from there. I spend most of my time repairing tube 
receivers, this will be interesting.

Best,
DW Holtman

----- Original Message ----- 
From: "Dale H. Cook" <radiotest at cox.net>
To: <test-equipment at mailman.qth.net>
Sent: Sunday, November 25, 2007 9:39 PM
Subject: Re: [Test-Equipment] HP-334A


> At 10:03 PM 11/25/2007, DW Holtman wrote:
>
>>I recently acquired a HP-334A. It works in the Voltmeter mode. In the 
>>distortion mode, it will not null. The balance knobs or main frequency 
>>dial has no effect on trying to null the unit.
>>
>>Does anybody have any suggestions on where is a good place to start 
>>trouble shooting?
>
> If you don't have the manual, download the PDF from the Agilent site:
>
> http://www.home.agilent.com/agilent/redirector.jspx?action=ref&cname=AGILENT_EDITORIAL&ckey=811981&lc=eng&cc=US&nfr=-11143.0.00
>
> See the troubleshooting table on page 5-13, symptom C.
>
> On the A6 bridge balance board are five lamps (DS1 - DS5) coupled to five 
> photocells (V1 - V5). I would think DS1 might be bad.
>
> Dale H. Cook, Chief Engineer, Centennial Broadcasting, Roanoke/Lynchburg, 
> VA - WZZI / WZZU / WLNI / WLEQ
> http://members.cox.net/dalehcook/starcity.shtml
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