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Tech Head - The Technology Section
The Work Bench and Soldering Station
Echostar AD3000IP Viaccess - Audio problem
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<blockquote data-quote="Llew" data-source="post: 682651" data-attributes="member: 175007"><p>A correction to the AUX scart input pin numbering - the AUX LH audio from terminal 6 goes to the chip pin 39 (LIN 4), not pin 17 (LIN 2).</p><p></p><p>So LIN 4 is used here, making LIN 2 the spare. </p><p></p><p>The series resistor/capacitor for each LIN are on my board as follows -</p><p></p><p>VCR Scart terminal 6 - CE617/R603 - chip pin 21</p><p></p><p>AUX Scart terminal 6 - CE 616/R604 - chip pin 39</p><p></p><p>In both cases R=6kOhms C= 1uF 50V</p><p></p><p>You can easily trace if the audio is missing on either of these inputs to the chip pins (21 and 39) due to an open circuit resistor by checking both sides of it with your probe, alternating your Scart plug in the respective VCR and Aux sockets.</p></blockquote><p></p>
[QUOTE="Llew, post: 682651, member: 175007"] A correction to the AUX scart input pin numbering - the AUX LH audio from terminal 6 goes to the chip pin 39 (LIN 4), not pin 17 (LIN 2). So LIN 4 is used here, making LIN 2 the spare. The series resistor/capacitor for each LIN are on my board as follows - VCR Scart terminal 6 - CE617/R603 - chip pin 21 AUX Scart terminal 6 - CE 616/R604 - chip pin 39 In both cases R=6kOhms C= 1uF 50V You can easily trace if the audio is missing on either of these inputs to the chip pins (21 and 39) due to an open circuit resistor by checking both sides of it with your probe, alternating your Scart plug in the respective VCR and Aux sockets. [/QUOTE]
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The Work Bench and Soldering Station
Echostar AD3000IP Viaccess - Audio problem
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