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Dead Arcam CD73

I have a dead CD73, there is no signs og life when power on. Mains trafo seems ok, and the fuses too.
Any hints???

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Hi 2002tii

These are a cool old machine. They use the cdm1 laser mechanism that was revered in its day for high performance. If you have voltage available after the rectifier stages, check the 3 pin voltage regulators. Marked as 78xx for positive regulator, and 79xx for negative. the xx gives you the voltage they are supposed to be putting out. They commonly fail, also check the same for dry solder joint. resolder them anyway if you are unsure. If all the regulators check out, then also check low value flame proof resistors in the power supply rails. Get back to me here again and let me know how you got on. Good Luck


Posted on Aug 09, 2008

  • Graeme Ross
    Graeme Ross Aug 19, 2008

    How did you go, any luck with the Arcam? :)




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