🚀 go-pugleaf

"alitonto"

Please do not  TOP  POST !!!!!!!


> Thanks Phil
> Although your suggestion sounds interesting, are you suggesting that
> tuners should have a voltage adjustements in place?
> I am sorry but I am confused as to what is there to gain from trying
> your suggestion.


 **  Try it anyhow  -   the only way to learn.


> I guess what I am trying to establish is if the higher voltage
> appearing at the AGC pin could be caused by another circuit part or IC
> etc.


  **   If the pic comes up lovely -  what does that prove ?





> Thanks.
>
> Phil Allison wrote:
>> "alitonto"
>> >
>> > 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.
>>
>>
>>  **  Try pulling that AGC voltage down to 3.9 volts or so.
>>
>>  Use a suitably chosen resistor to ground or maybe a 3.9 volt zener.
>>
>>  See what happens.
>>
>>
>>
>>
>> ........    Phil
>