Issue with mcm390 philips chain

riton08rit@ Posted messages 6 Status Membre -  
 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 réponses

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

Sorry, I'm still broken down.
0
abbé quad Posted messages 1581 Status Membre 19 > riton08rit@
 
Either the speakers are blown, or the speakers themselves!
--
If all the guys in the world..................
0
jj
 
Hello, I’ve had the same problem since yesterday. Does anyone have a starting solution? Thanks in advance!
0
neuf53 > jj
 
Is the display normal or without selection information?
0
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
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