[Premium-Rx] Problems with RA6790/GM

[John Reed]

Fault 1: You might try changing the location of the input cable to the main 
IF board.  On an RA6793A I was able to reduce the digital noise a great 
deal, but not get rid of it, by just moving this cable around.  I expect a 
better solution would be to provide a balanced cable arrangement.  This 
cable seems to pick up noise from the processor board and since the signal 
levels are low at this point the digital noise ends up in the IF signal path 
and can be strong.

John Reed

----- Original Message ----- 
From: "Damien Vale" <lcval1 at netcon.net.au>
To: <premium-rx at ml.skirrow.org>
Sent: Wednesday, October 20, 2004 2:15 AM
Subject: [Premium-Rx] Problems with RA6790/GM


>I have a couple of problems with a RA6790/GM I'd appreciate some
> pointers on.
>
> No errors are reported by the BITE test, and all filters are detected.
>
> Fault 1:
> High processor noise. Varying tones while tuning, continuous whine when
> stopped. Over all ranges. A6A2 board has latest software and new
> battery, board has also been checked OK by Gary W. A4 board and entire
> front panel have been swapped with another unit, with no change i.e.
> problem stays with the unit.
>