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Try a different brand of blank dvd+r or -r. you will find that your dvd machine is fussy on what discs it plays. More exspensive dvd players are fussy with what dvd discs you put in, as cheaper dvd players would virtualy play most types of dvds.
You check the SMPS (Power Supply Section) and verify the voltages from the various terminals of the transformer accordingly check the bridge, voltage regulator, and filter circuits. If any of this parts are gone replace the appropriate parts not the all.
Without seeing the actual unit, I would guess that the power supply has failed. These unit have what are called "switch mode" supplies that rely on circuits that oscillate. If a capacitor goes bad, the unit won't oscillate properly, thus no power. These are difficult to track, but are not usually expensive to repair. I would suggest a trip to a service center for a detailed repair estimate. Report the results here.
I had this code (f09) on my Panasonic DVD VHS recorder. After seeing that it meant overload I took the cover off to look for burnt out components. I found that an electrolytic capacitor had bulged (look up capacitor plague on wikipedia). I replaced the capacitor with one of a similar value from an old power supply and it worked fine.
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