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Old 26th June 2010, 07:36 PM   #1
Ryssen is offline Ryssen  Sweden
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Default Schema for benchmark DAC 1?

I have a DAC1 that I was going to sell,but the buyer found out the optocal input is not working,and no matter how the input selector is set theres sound from the coaxial input...So is there´s a schema?
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Old 28th June 2010, 12:35 AM   #2
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Have you looked to see what receiver chip it uses? That should help to run down the fault.
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Old 28th June 2010, 01:34 PM   #3
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Usually it is some kind of multiplexer chip that switches the inputs (NAND gates usually for just a couple of inputs). Very seldom it is one single receiver chip with multiple inputs (but sure, it is possible).
So if you can, post a picture of the inside...
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Old 28th June 2010, 08:47 PM   #4
Ryssen is offline Ryssen  Sweden
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He should send it back to me,so I will open it and see,and take a pic to post...
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Old 29th June 2010, 04:49 PM   #5
Ryssen is offline Ryssen  Sweden
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I opened the case and found what the fault was..It was a jumper that was set to disable the input selector,I changed it and now it works as it should..
Thanks anyway...
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