JACQUES HIFI PAGES
UPDATES : cdm 4/19 transplant
I bought this marantz cd50 for 10 euros....cheap...but back home it presents reading problem...I was about to give up trying fixing this with usual tricks --lens cleaning , more pressure on the latch , etc...---but in the process I realized its sound was incredible....there was a presence on the drums I never heard before...The only mod I did on it was to take direct signal out from the 1st half of the output opamp and that was enough to blow any other player in the room.. So I decided a laser transplant was worth it.
That poor philips cd610, which
read ANYTHING , including scratched to death cdr, had to donate its wonderful
composite cdm4...
its tda1543 was not worth it...
Of course a lot of you tweakers
know how to do it...but I did not find any info on the web..so here is how I
take off cdm4 from the cd player.
Once the face and drawer are removed you
don't have to unscrew the cdm4. Just push with a screwdriver the latch in the
yellow circle : the whole thing comes off . Then unplug the motor dc connector
and take off the data ribbon, which is much easier to take off then put back.....
One question remains : the cd50
is supposed to have the 'composite' cdm4 , while there was nothing on it...but
the cd610 is well engraved composite.
Go figure...
For
unknown reasons, the two motors, which are exactly the same, did not bear the
same connector ... so I had to swap them.
Next step will be soldering
two simple wires here from pin 7 of the output opamp..I used the variable output
which are not purist-correct.
Job done ! Works like a dream...the
only difficulty was to plug back the ribbon..I hate them.
This player just
sounds fantastic now, with, for example, Kenny Burrell 'Midnight blue' from
the R.V.G. historic Blue Note recording...
You'll swear the bongo player
is somewhere in your living room....
MY PREAMP/BUFFER : MYKONOS AMPLIFIERS SPEAKERS CD PLAYERS DAC DRIVES / TRANSPORTS OSCILLOSCOPE TEST DRIVE TURNTABLES DCC PLAYERS
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