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RCA RCD175 CD player won't power up on ac but will on batteries

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?

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  • maiyasdada Jan 25, 2009

    I have an RCA RCD175 Boombox that will not power up with AC - It was used only once,and it worked great for about 1 hour, then i unplugged it from the outlet, it would not power up when plugged back in. Ihave not tried batteries yet,I would really prefer to use the AC power cord - Thanks for any help!

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6 Suggested Answers

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Posted on Jan 02, 2017

fire sine
  • 382 Answers

SOURCE: Transformer main coil shorted.

You have to do the math according to the circuit path, and all components in between. Break out the voltage meter.

Posted on Oct 28, 2007

ThaMp3Doctor
  • 8596 Answers

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

  • 319 Answers

SOURCE: RCA RS2640 Quit

Unit probably has defective component in standby circuit. Have serviced

Posted on May 08, 2008

  • 1 Answer

SOURCE: Philco 841.205 Power Transformer

Hi:
...I have a brand new one exactly the same (Philco) that I will sell you for ten bucks.... but I don't know where you are?
Please e-mail me at: brodi@telus.net

Posted on Mar 24, 2009

  • 1 Answer

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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