Service information for NAD 514 CD player needed!
Hello,
Before you start playing with adjustments, I would suggest cleaning the sled rails and lens as suggested by other posters. There is also a common problem with the focus coil drive transistors because an under-sized transistor was used. (This problem also occurs in the 5000 and 5440) Replace Q102 with a 2SD669 or similar transistor, and replace Q103 with a 2SB649 or similar. Also look for overheated solder joints in the area of the transistors. Regards, Tim Schwartz Bristol Electronics Gyro wrote: Hi guys. I'm searching for the above since the player has started skipping towards the end of a CD (tracking offset problem?). The board is rev. issue 1A and there are five potentiometers; VR101, 102 to 105. Which one solves the tracking problem? Any help appreciated :-) Andreas |
Service information for NAD 514 CD player needed!
Hi guys.
Thanks very much for the suggestions. I forgot to write that I have already cleaned the lens; it didn't "look" dirty at all, so I assuming it's another problem. It there an easy way of ridding the player of the skipping? It usually begins halfway through a normal length CD. Thanks again for the help :-) Andreas "Tim Schwartz" wrote in message ... Hello, Before you start playing with adjustments, I would suggest cleaning the sled rails and lens as suggested by other posters. There is also a common problem with the focus coil drive transistors because an under-sized transistor was used. (This problem also occurs in the 5000 and 5440) Replace Q102 with a 2SD669 or similar transistor, and replace Q103 with a 2SB649 or similar. Also look for overheated solder joints in the area of the transistors. Regards, Tim Schwartz Bristol Electronics Gyro wrote: Hi guys. I'm searching for the above since the player has started skipping towards the end of a CD (tracking offset problem?). The board is rev. issue 1A and there are five potentiometers; VR101, 102 to 105. Which one solves the tracking problem? Any help appreciated :-) Andreas |
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