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A no sound problem in a CD player repaired. Model: APEX AD-515

By on July 6, 2013
no sound and audio repair

A repair technician, also a friend of mine called me on the phone to help him with a problem. This guy repairs only TV sets and Treadmills. For some reason he does not deal with CD players.

 no sound repair

The main problem with this CD player was no sound coming out. I connected the speakers to it, put a music CD in and it started to spin but just like the guy said there was no sound coming out. I turned the volume all the way up and I could hear faint sound coming out but very low. Faint sound means sound IC is in good working condition. Tried to wiggle the wires but problem remained.

I tested the speakers with my digital meter. On one speaker I could read 8 ohms but the other speaker I got an infinity reading indicating a bad speaker.

 no audio repair

I took the cover off and tested it again. Sure enough, the main speaker was open and it had to be replaced. Fixing this speaker, will make the no sound problem in this CD player go away because the other speakers is working fine and it should produce sound.

My thoughts shifted to the main program of this CD player. This CD player has two speaker output, one head phone output and on Aux jack. I inserted an active speaker system in the head phone jack and I could hear nice sound. I sent a message to APEX Company and asked them about this problem.  They responded back very quickly telling me that the only answer to this problem was the remote control. Someone has changed the setting on the output of this CD player. I called the customer to get me the remote control and he told me he bought it used CD player and no remote with it.

He added that he is willing to pay for new one if that would solve the problem. I called APEX again and asked about the remote. He kindly told me where to get it from in my home town. They gave me the name of the store and the phone number for that store. I went there and bought the remote. I changed the setting on that CD player, fixed the speaker and the sound came out loud and clear.

waleed rishmawi




This article was prepared for you by Waleed Rishmawi, one of our ‘Master Authors’ and currently working in the Bethlehem area of Palestine repairing electrical and electronic equipment. Please give a support by clicking  on the social buttons below. Your feedback on the post is welcome. Please leave it in the comments.

By the way if you have any good repair article that you want me to publish in this blog please do contact me HERE.

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  1. Sehab kably

    July 6, 2013 at 2:05 pm

    Dear Mr. Waleed I would like to ask a question is electronic repair is you primary job ? because i think this field can not be the only source of income anymore. by the way nice article.

  2. Mircea

    July 7, 2013 at 2:00 pm

    Nice article!Have a nice day Mr Waleed!

  3. Waleed Rishmawi

    July 7, 2013 at 6:12 pm

    Shehab. I used to work in different field doing Audio and Camera work and editing. the ecomical and politcial situation forced me to change my job to electronic repair. yes, right now it is my primary job. it is up and down income situation. that is why I am trying to repair all kind of equipment not focusing in certain items. thanks. I am glad you are liking my articles.

  4. Waleed Rishmawi

    July 7, 2013 at 6:16 pm

    Mircea. I am glad you liked the article. have a good day and thanks for the support.

  5. beh

    July 8, 2013 at 5:50 pm

    thanks for sharing this interesting repair indeed is very difficult to find such problem in the audio sets

    • Waleed Rishmawi

      July 8, 2013 at 5:58 pm

      Beh. You are welcome.

  6. corriete

    July 9, 2013 at 6:08 am

    I have a panasonic SA-AK780 radio and CD. The voice on the Radio fm or AM comes out loud and clear but when i play the Cd PART the voice is weak. I have to put the volume up to 40 before i can hear sound.(stil weak) Do you think the same problem is like what you solved above? thanks

  7. Waleed Rishmawi

    July 9, 2013 at 5:40 pm

    that could be but make sure the the pick up led that reads is in good condition. sometimes cleaning does the job and maybe, it could be a bad pick up led.


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