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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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Marantz CD94 /Philips CD960 need repair help !
Hallo !
I have aquired this wonderful old CD from relatives and am trying to fix it. Wld need advice where too look Beside belts and bulbs which seem peanuts this one has a serious problem: After warm up the relay at the output switches off after clicking a lot and the audio output ist gone. Sometimes the disc in the CDM1 continues normal spinning and the time meter steps normally forward. Sometimes the disc stops simultaneously when the relay starts to click and the display shows disk error message. Would like to know which errors this wonderful machine develops after time because I would like to fix it for personal use in my hifi. Basic electronic skills and equipment i do have. Thanks for your help. |
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gasper wrote:
Hallo ! I have aquired this wonderful old CD from relatives and am trying to fix it. Wld need advice where too look snip Might want to check for fractured solder joints in the power supply on the larger transistors, or in the case of my Philips CD880, the solder joints on the pins where the power transformer plugged into the supply board had fractured, causing an intermittent / fading display or the drive would stop. Resoldered all the pins, and my CD880 has been running (and sounding) fine since. Since it fails when warm, you might also want to get some freeze spray, and spray the transistors in the power supply section when it fails, to see if you can determine if one of them is failing. But I would still give the circuit boards a good visual inspection for bad solder joints, since the player has gone through a lot of thermal cycling over the years. Don't know about the CD94/CD960, but my CD880 does run warm, and the heat up - cool down cycles caused the connections to fail on the power transformer connectors. Hope this helps. Bob. |
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