How to confirm a TV tuner is at fault?

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#518

From: alitonto
Date: Mon, 18 Jul 2005 13:12

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re Teac TV ctm687 This is further to my previous post 17/7/2005.
After performing many tests on the circuit I find the AGC voltage to be
higher (7.84) than it is required at I/C TDA8305A (3.9).
I am not sure what other things to try before actually desoldering the
tuner.
If I can obtain the schematic of the tuner which shows what voltages to
expect at it's outputs and these match the readings I measure on the
tuner whilst still connected to the circuit board, will this confirm
the tuner being faulty?
Any thoughts on this?
Thank you
Al

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From: "alitonto" <alitonto@hotmail.com>
Newsgroups: sci.electronics.repair,aus.electronics
Subject: How to confirm a TV tuner is at fault?
Date: 18 Jul 2005 06:12:47 -0700
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