[TechAssist] Re: Zenith 9-1395 snow
- From: becyn <becyn@xxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Wed, 19 Jan 2005 11:10:53 -0500
You measue 33v on several the tuner interface pins???
Normally there is a 'raw" 33v dc input, and another one where you can test
the 'vt" internal value, which is some value lower than 33v depending
on channel, that should be all.
Well, It's time to roll up the sleves and go in with signal injection to
the
IF and verify that all is well. vary the attenuation and look at the tuner
AGC line.
2)You might have AGC line problems thats flatlining the gain
3) It's probably a "digital" tuner, so verify that ther isn't an issue
with one of the
control lines.
Those are your next best bets.
happy hunting...let us know what you find...
Jim McVey
McVey Alltronix
327 Broadway
Newburgh N.Y. 12550
"If it doesn't play...
CALL MCVEY !!!!!!"
Factory authorized
service for over 20
major brands.
845 561 8383
(Last of the Mohegans)
Peter oliver wrote:
>I saw a respone in the archives for this month that hasn't filtered thru
>yet. the tuner has 33v present at several locations. 5v is also found.
>
>Peter Oliver
>Tucson Radio TV
>
>From: "Peter oliver" <oliver_peter1@xxxxxxxxxxx>
>Reply-To: techassist@xxxxxxxxxxxxx
>To: techassist@xxxxxxxxxxxxx
>Subject: [TechAssist] Zenith 9-1395 snow
>Date: Tue, 18 Jan 2005 22:31:22 +0000
>
>Zenith 25"
>9-1395 chassis
>
> This is for one of our comerical accounts. Set only has snow. tried the
>tuner and the LA7672
>Any ideas?
>
>Peter Oliver
>Tucson Radio TV
>
>
>
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