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Louie, Technician
Category: Home Theater-Stereo
Satisfied Customers: 12063
Experience:  Have been in the business 25+ yrs., down to component level.
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ForCustomeronly. Louie I have a cd player which has a pair

Customer Question

ForCustomeronly. Louie I have a cd player which has a pair of rca output jacks and only one of them is working the other isnt. Please advise.
Submitted: 2 years ago.
Category: Home Theater-Stereo
Expert:  Louie replied 2 years ago.

Hi again Johnny and welcome back to JustAnswer,

Thank you for the new requested question and your patience. Should you still need assistance for information purposes only...

Initially, this is to acknowledge this post and please bear with me as I review the schematics/Service Manual.

Still, which RCA please; 2 X for the analog AUDIO OUT or the single RCA for the DIGITAL OUT?

Customer: replied 2 years ago.

sorry the analog outs. I forgot which analog rca out. I know one works and the other doesnt

Expert:  Louie replied 2 years ago.
I understand Johnny.

If it were the LEFT Channel that has no sound, then proposed preliminary checks on:
  • • transistors Q9401 & Q9403;
  • • resistors R9410 & R9413; and
  • • capacitor C9405.

If it were the RIGHT Channel, then:
  • • transistors Q9402 & Q9404;
  • • resistors R9411 & R9415; and
  • • capacitor C9406.
Customer: replied 2 years ago.

Louie please describe how to test q9401

Expert:  Louie replied 2 years ago.
Think of Q9401 as 2 diodes where the base is the common hence:
  • • base to collector would have forward and reverse test;
  • • base to emitter would also have forward and reverse test;
  • • collector to emitter would have to have very very high resistance either way the probes are used;
  • • the video tutorial HERE may provide further insight.

Customer: replied 2 years ago.


Expert:  Louie replied 2 years ago.
Great Johnny! Good to hear that the issue has been resolved, congratulations.

Hopefully, the above service information may have helped serve your purpose and would appreciate a rating if so warranted (if haven't done so).

Good luck and thank you too for the opportunity to be able to share the information.

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