Question about Audio Players & Recorders
Taken off the sides and back but I cannot identify the potentiometer at all even though I have folled instructions. Really need a video or picture of where it is and what it looks like.
As far as I know, there is no adjustment for the spinning of disks - the microcomputer determines the speed to spin the disk in order to read the pits properly. What I normally find is a dirty lens that can carefully cleaned with alcohol and a clean lint free cloth. Another problem I find is a build up of lint on the rods that the laser runs on that stops the laser head from going far enough along them to begin the reading of the pits. And one final problem I've seen that isn't fixable is that the very fine wires that suspend the laser focusing lens might be broken or have a real bug or dirt stuck so it won't go up and down properly read the pits on the disk.
Posted on Dec 01, 2014
Testimonial: "My question was.... where is the pontentiometer?"
Did you try a lens cleaner kit?
Posted on Dec 01, 2014
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Posted on Jan 02, 2017
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Sometimes it might pick up ordinary audio CD but will not play other formats. This indicates that the optical head is weak and so there is no detection or scanning of the CD . If the optical is working the tracks will be read immediately but with no scanning the laser head can be defective.
If there is no result then watch if the CD spins or tries to spin. If so the board seems to work unless a test is taken on the main board but the possibility of a defective optical head can be the suspected fault.
If any of the above seems otherwise we must recheck with possibilities of a malfunction of the main processor board
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