flo86

just gotted a dead Numark CDX and started do disasamble it and attempt to fix it and I have some impressions. The specs for this tool are/was OK but it is a low cost build. They didn't use, for example, quality capacitors and for this reason, after a period of time, some of them are shorting some circuits. In my CDX I found a IC Stabiliser exploded, a rectifier and a NPN tranzistor and, the laser unit. I replaced all of these and it works but sometimes it skips OEM CD. I tried to replace only the laser, and it didn't worked, I bought a new OEM laser unit with the Servo motors and it worked but hardly, and the reason for this is that the laser (Kss213c)that I bought from internet wasn't a OEM part. After that, I went to a scrap center and bought from there a micro Hi Fi system, A Grunding Cirflex, and a Sony cd player CDP Xe200 which uses the same laser as CDX use but . I swamped the LSU unit and now, the CDX works fine and I made that choice because that was the only way to get a working original Sony laser. The other problem is that, the supply voltage for this player is not well filtered, and this causes some freezing of the unit, some "auto cue" because when it skips the disc, it will replay a randomly part of the song until the lens gets on the CD track again and will continue to play from where it was "stuck". I will try with an oscilo in the future to diagnose the unit and I will tell you what to check in case you need to repair these units. Also, similar hardware you will find also in other brands equipment.