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Music Fedelity A3.2 CD player no sound out of line and digital output
Music Fedelity A3.2 CD player no sound out of line and digital output
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Old 11th June 2018, 04:01 PM   #1
kevd138 is offline kevd138
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Default Music Fedelity A3.2 CD player no sound out of line and digital output

Hi I picked up a Music fedelity A3.2 cd player at a carboot, it plays CDs and reads disks but I am getting no sound out of the player it looks like a DAC issue. Does anyone know where I can get the service manual so I can get the schematic of the DAC...
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Old 13th June 2018, 02:19 PM   #2
Mooly is offline Mooly  United Kingdom
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Music Fedelity A3.2 CD player no sound out of line and digital output
The DAC may be the PCM1738 in which case the data sheet for the chip will piece together the expected voltages and signals expected:

http://www.ti.com/lit/ds/symlink/pcm1738.pdf

Check for obvious stuff first such as whether there is a mute facility... once muted it may remember the setting. Should be easy to identify any muting at the final analogue stages, whether relay or transistor based.
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