Question about Sony DAV-C450 System
C-81displayed on display panel can not open disc trays.
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Posted on Jan 02, 2017
Look on the bottom of the unit. There is a hole with the letters ex and op. Shine a light in the hole and you will see a white plastic object with a slot for a slot screwdriver. You can turn this either way but be careful. If you feel resistance and the object does not turn, turn the other direction and the unit will open. Remember if the disc loaded the clamping of the disc is in place so you must turn it the proper way to let the current disc loose hence the op and the ex. Op is open. Ex is exchange.
Posted on Jul 27, 2008
1 of 2 things
can you hear the motor running inside the player ????
there is usualy a snall pin hole under the tray insert a paper clip into this hile and push it in if tray starts to auto open it might be just a dry set of rails
if rails asumed dry open unit and coat the rails with anti seize and try again with the switch on front cover
Posted on Aug 03, 2009
SOURCE: Hi - our RDR-gx3 powers
This seems to be a fault in the main board as it fails to switch on. It seems that the power does not switch on as the main processor has some errors that sends feedback to stop it from switching on.
The fault can be related to a short in the drive board, the power to the main board. If the connector to the main board is detached then the display must show up. If not you will need some basisc electronics to check the processor and circuits to confirm if there are any errors.
Also remove the power and allow some time for the set to drain voltages, when switching on press down the play button -- check the manual for the resetting pattern to reset the processor if it has hung up.
The front panel button jamming or other issues like the CD being jammed cannot make the power from coming up and then shutting down. So you will need to have the main board checked for fault. This being a complex area it is better to get opinions and estimate before you tamper to damage the board.
Posted on Aug 22, 2011
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