Tip & How-To about Audio Players & Recorders
As this recorder get older and with frequent use it will sometimes not be able to spin the DVD if it can't do this the play head will just move up and down until the DVD starts to spin. If it doesn't start then you will receive the error UNKNOWN DISC. You will no that this is the error you have as you will hear the DVD player clunking every 2 seconds as the head tries to read the DVD.
This actually means the a drive motor is not able to overcome the spindle and DVD weight combined it really does need a new motor fitting.
If you can't afford a new player remove the top drill a small hole about the size of pen top just above the white spindle top (drill anywhere SHOWN IN RED) and replace the top,now when the DVD player has trouble give it a nudge with a plastic pen top I use a biro lid and this will tease the spindle to start moving just enough to overcome the inertia
NOTE: this is a temporary fix but it really does work and if you think that this is a bit drastic then look underneath there is a 1/2 " slotted hole near the front that is the manual release from the tray if it gets stuck and they put this in and its been there probably without you even knowing.!!
Posted by SpideRaY on
Please check the connections , check the leads from the DVD to the TV, use the line out from DVD to the line in the TV using the video and audio inputs. If this wont work then in most cases when the CD does not play it is possible that the optical head is a suspect. 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.
The main motor will not work in some cases as unless the tracks are read the drive motor will not work with signal from the processor.
Sometimes certain cleaner disks will not be tracked to run for cleaning as it will not be read and so will reject. Hence it is ideal to manually clean the laser head eye using a cleaning swap /cotton bud with gentle pressure on the lens eye.
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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