Question about Audio Shelf Systems
The unit has good rectification but on the 9V buss it has 15v and on the 4.5V buss it has 3.4V. There is no regulator that I can see on the 9V line. Is the transformer shorted causing it to output a higher voltage?
SOURCE: Power Supply transformer failed
2 x 5 Watts RMS Stereo
5 watts continuous RMS power output per channel, at 8
ohms, from 120Hz to 15kHz, with no more than 10%
Total Harmonic Distortion (THD).
Posted on Apr 08, 2008
SOURCE: Power transformer appears bad.
don't bother with a transformer. use a 12vdc 2amp power supply, the unit has a 8v regulator. remove the bad transformer and connect the power supply. polarity doesn't matter because the unit has full bridge rectifier that will provide the proper polarity.
Posted on Jun 21, 2011
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