[QuadList] Problem AVR 3

[Ted Langdell]

Hi, Lee,

The lunch is in the Lower South Hall concession seating are. See post  
to follow about the event.

Perhaps an Entourage of Engineers could be of help? I know some list  
members are at the PBS Engineering Conference this week in LV.  And  
more are arriving over the weekend.

Ted


On Apr 6, 2011, at 8:48 AM, lee williams wrote:

> Have a interesting problem with one of my AVR 3's.
>
> I have consistently low RF readings at the tracking meeter and can't  
> get the RF up to normal levels.
>
>
> Here is what I see.
>
> A known good hi band tape that will display RF between 80-85 in any  
> other machine will only display 10-15.
>
> Low Band light always on.
>
> Auto Chroma won't respond on #4 card.
>
> Looking at the Demod in the wave form monitor, the sync level looks  
> 10 IRE low.
>
>
> Here is what  I have tried.  (all swap outs are with known working  
> machines)
>
> Swapped out pre amp behind head.
> Changed out MDA  (it was bad with other issues)
> Swapped out every card in the lower frames.
> Changed out power supply frame.  (it had cap problems with other  
> issues)
>
>
> This one has me good.
> Nothing visible as far as the wiring harness.
> I am kind of running out of things to swap/look at.
>
> Has anybody else ever experienced this one?
>
> Also,
> Were will the get together be at NAB?
> Plan on being there for Monday and Tuesday.
>
> Thanks
> Lee
>
>
>
>
>
>
>
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Ted Langdell
Secretary
Skype: 	TedLangdell
e-mail:	ted at quadvideotapegroup.com

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