Hi all,
after massive resoldering lots of broken pins on all the PCB of my Philips CD-303, It come back to life after 34 years.
Everything works fine exept for the audio output.
As soon as i switch on the player, on both channels appears a loud "hum"; when CD playing starts a lot of popping comes from both channels too.
I put a link of a video I made to clarify the problem:
IMG_8003 - Streamable
I tried with different inputs in amplificator and different CDs with the same results.
Searched the whole forum to find similar problems but they seem related only to one channel.
I would be glad if someone could lead me in diagnosing and solving the proble,
I am not specialist, I don't know what could be the faulty components.
Many thanks and regards!
after massive resoldering lots of broken pins on all the PCB of my Philips CD-303, It come back to life after 34 years.
Everything works fine exept for the audio output.
As soon as i switch on the player, on both channels appears a loud "hum"; when CD playing starts a lot of popping comes from both channels too.
I put a link of a video I made to clarify the problem:
IMG_8003 - Streamable
I tried with different inputs in amplificator and different CDs with the same results.
Searched the whole forum to find similar problems but they seem related only to one channel.
I would be glad if someone could lead me in diagnosing and solving the proble,
I am not specialist, I don't know what could be the faulty components.
Many thanks and regards!
Thank you for the replay, I Will try to replace them.
How can I identify their type/model to buy the spares?
Thanks again
How can I identify their type/model to buy the spares?
Thanks again
Last edited:
It's a dead diode/rectifier.
Look carefully for a black band round one end ( similar to the one to the right )
Replace it with a 1N4005 making sure you orientate it the same way.
Cheers Andy
Look carefully for a black band round one end ( similar to the one to the right )
Replace it with a 1N4005 making sure you orientate it the same way.
Cheers Andy
The popping during playback is probably due to lots of soft errors, too many for the ECC to fix or interpolate. This could be due to many issues with the optical head assembly, but a good candidate is dirt build up and hardened grease on the mechanicals. 34 years is a long time. An air-duster gently applied is a good first thing to try for dust/dirt.