Probably a power supply issue, judging from search results you could have found:
http://howtomendit.com/answers.php?id=62594
http://forums.digitalspy.co.uk/showthread.php?t=712811
Reference the diode:
http://www.ebay.co.uk/itm/DIODE-ULTRA-FAST-3A-200V-Part-SF34-/390614556366
http://www.farnell.com/datasheets/1697469.pdf
For capacitors, seek further advice,m e.g., from here: http://www.badcaps.net/
http://www.justanswer.com/recorders-and-players/6q32e-toshiba-rdxv60kb-dvd-recorder-keeps-switching-itself.html
XXX
January 2017