RE [R-390] Diagnostic Help Needed

[Steve Hobensack]

  Make the frequency show 7+000. The egg shaped cams should all point to  
paint or scratch marks on the chassis. There should be a mark for each cam. 
This shows that the rig is mechanically aligned. Electronic repairs should 
be made after mechanical repairs.
..73..Steve..N8YE


>Message: 2
>Date: Wed, 21 Feb 2007 19:45:48 -0500
>From: Carole White-Connor <carolew at bellatlantic.net>
>Subject: [R-390] Diagnostic Help Needed
>Cc: R-390 at mailman.qth.net
>Message-ID: <45DCE7B0.DF6B2529 at bellatlantic.net>
>Content-Type: text/plain; charset=us-ascii
>
>
>I powered up my new R-390A project tonight and the news isn't good. There 
>is
>static from the speaker but no stations. When I plug the antenna into 
>either
>of the inputs, there is no change in the static. The only place I seem to
>get a station is around 780 khz but it's very garbled. I get nothing at 
>1250
>khz, which is an AM station about a mile from my house.
>
>Before powering it up, I replaced four missing 5814As with 12AU7s. I also
>replaced the troublesome caps in the IF deck (as per Chuck's page).
>
>I need some step-by-step instructions to diagnose the problem. The test
>equipment I have is a VTVM and a signal generator.
>
>Any help would be great appreciated.
>
>
>Joe Connor

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