There might be any number of problems with this 2005 model recorder. Here are some of them:
Failed or failing capacitors in the power supply. With this conditon the recorder will not complete loading up and will attempt but fail to run the self-check.
Failed or failing Digital PCB (the brains of a Panasonic). The DMR-ES20 has the problematic LSI CPU.
Failed or failing laser assembly.
The DVD Drive has a dirty rubber hub or laser lens.
If there has been a disturbance to a ribbon cable there is a chance that a ribbon cable contact has been damaged.
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