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Issue with mcm390 philips chain

riton08rit@ Posted messages 6 Status Member -  
 mattmonc -
Hello,
I need a little advice on how I can fix this mini chain
the power button lights up but I can't listen to either cassettes or CDs or the radio
what should I do?
thank you in advance

4 answers

  1. Fiso6
     
    I have the same problem too! Grr
    So if we just change the speakers, it should work??
    6
  2. bibou60
     
    good evening
    I have the same problem, have you found a solution
    thank you in advance
    1
    1. riton08rit@
       
      Hello,

      Sorry, I'm still broken down.
      0
      1. abbé quad Posted messages 1581 Status Member 19 > riton08rit@
         
        Either the speakers are blown, or the speakers themselves!
        --
        If all the guys in the world..................
        0
    2. jj
       
      Hello, I’ve had the same problem since yesterday. Does anyone have a starting solution? Thanks in advance!
      0
      1. neuf53 > jj
         
        Is the display normal or without selection information?
        0
  3. reno11
     
    Same problem on my end!
    The display is lit but provides no information!
    I took everything apart and found on the board containing this screen a transistor (I believe) that seemed to smell burnt!
    It is a blue electronic component with its two legs on the same side. It is marked with the notation "L 703"!
    Am I on the right track? And where can I get this component? Indeed, all the electronic component websites are complex and I can't find what I need.
    Thank you.
    1
  4. mattmonc
     
    Issue resolved; after some research and trials, with a few blown fuses along the way, it became clear that it was a power supply problem.
    Cause of the issue: defective capacitor C115 of 3300µF (it's the largest in the hi-fi system; you can use a 35V instead of a 25V; I used a 2200µF and it works just fine). Once replaced, everything works perfectly again.
    A big thank you to this forum.
    0