Re: commodore plus 4 without sound...

From: didier derny <>
Date: Fri, 16 Mar 2012 10:11:02 +0100
Message-ID: <>
Thanks all for all your advices,

I'll check the path between  the TED to the connector this week end

I should received a second TED too..



Le 15/03/2012 17:34, Gerrit Heitsch a écrit :
> On 03/15/2012 12:46 PM, didier derny wrote:
>> Hi,
>> it was the cable working with my sx64.
>> I checked the signal directly on the rca connector.
> You might want to check the signal directly at TED (Pin 33 is Sound 
> output) and if it's present there, check the simple amp that is 
> between TED and the DIN socket you plug your video cable into.
> The circuit is uses only one transistor (Q3) and can be found in the 
> schematics on the page with the modulator. There are a few 
> electrolytic capacitors in the signal path, one of them might be 
> dead/dry.
> On the PCB the circuit is located right next to the keyboard 
> connector. One side of R10 (1KOhm) is directly connected to TED's 
> sound output. Checking the signal there might be easier.
> Hope this helps
>  Gerrit
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Received on 2012-03-16 10:00:05

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