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It is currently 08 May 2021, 21:00

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PostPosted: 09 Mar 2021, 06:30 

Joined: 09 Mar 2021, 05:50
Posts: 1
Dear all,
Let me please present my case.
I bought a cd player Marantz CD-75DX, which I paid $180 because it was reconditioned by the seller.
I received the player, it worked right, but the sound was not very good imo…
So I decide to open it and take a look. You can find the pictures here:
I noticed a big condenser that may be leaking, next to the power supply (Image 1, 6,7), and another condenser, a red one (in the center of image 11 and 13) that looks like swollen.
I took some other pictures also.
Is there anybody experienced on tweaking able to tell me if all this is right?
Does the swollen and leaking condensers may be the reason why the sound is not so good ?
It would be great if you can send me some comments about this.
Thank you very much!
Kind regards,

PostPosted: 09 Apr 2021, 21:32 
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Joined: 04 Jun 2008, 20:59
Posts: 4365
Location: Arizona, USA
Hi, The one capacitor looks like it was damaged during either its installation or the replacement of one of the rectifiers next to it. It coul dbe splattered solder and flux on the capacitor, but still not a nice job. A poor fix IMO. I can't really tell from the photos if any of the red capacitors are bulging. If one is it should be replaced as it has failed. IMO a dubious reconditioning job. Most likely only cleaned the laser and lubed it. Now for my other thoughts. I don't seen a lot of praise for this unit when I checked so the sound may be typical of the type. I have an upgraded CD5001 and it doesn't even come close to the sound I get out of my Oppo SE. Others might chime in with some different thoughts though.

Good listening

Some of my DIY Tube Amplifier Projects:

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