5 disc cd changer powers off
Hi Cassandra. The problem mus be related to excessive current being drawn, either in the disc loading motor, or the sled motor. After closing the tray, the system loads one disc. This is done by lifting up the player mechanism. This action is done by a motor and gearwork. When this mechnism is blocked f.i. or the motor driving it draws too much current, this might cause the "power down." In case the disc is loaded,
the sled motor makes the laserunit travel fully inwards (center of the disc). This motor can also draw too much current. Generally, there are
problems with these motors, due to collector contamination. (They run a very low rpm for he tracking, that there is no self cleaning effect on the collector )
Another reason wich is commonly seen in electronic apparatus are
faults in the power supply itself. Mostly due to dried out electrolytic capacitors. Due to this, the power supply cannot deliver enough current when needed. Referring back to the power consumption which occurs at some points (movements like loading, reading etc.), it is likely that the power units shuts itself down.
Slightly warming up the (switching) pwr. supply by means of a hair-
dryer, improves it's function. So typical failures due to poor condition of the power supply can be detected in this way. Replacing (most of the)
electrolytic capacitors cures the fault. When you have an oscilloscope
you can find out precisely which capacitors or bad. It can be in the +5, +12,-12 V section as these are the most common ouput voltages.
Feb 21, 2014 |
RCA RP8065 5-Disc CD Changer