Pioneer DVD-400V HDMI Reset

Progressive Scan is a menu option relating to video output of this player. Assuming you have the original DVD remote, this should be easy.

* From the user manual (pages 50-51 of the pdf document):

About progressive scan video
Compared to interlace video, progressive
scan video effectively doubles the scanning
rate of the picture, resulting in a very stable,
flicker-free image. Progressive scan video is
available only from the component video
output.

If you connect a TV that is not compatible
with a progressive scan signal and switch
the player to progressive, you will not be
able to see any picture at all. In this case,
switch everything off and reconnect using
the supplied video cable (see Easy
connections on page 14), then switch
back to Interlace. Switch the player to
standby then, using the front panel
controls, press STANDBY/ON while
pressing 'back to Interlace.

Hold these 2 buttons together for about 10-15 seconds or so, but only while the player is in standby mode. *

If you have lost the manual, you may be able to download the user guide (as an adobe reader (pdf) document) from:

http://www.retrevo.com/support/Pioneer-DV-363-K-DVD-Players-manual/id/385bh937/t/2/

(it will ask you for an email address prior to downloading - use a blank address if possible and enter the security code in the fields then save the document)

If the above suggestion does not switch it back to interlace, you will need a TV with progressive scan function to enable you to access the player's on-screen menu and in 'Initial Settings' 'Video Output' 'Component Out' section, select 'Interlace'. and press OK from remote as required.

Either way, it should NOT require a workshop service, and is simple enough to do at consumer level with the right TV type.

According to the Pioneer FAQ for this item :

"You can reset all models of DVD Players with the following method:
1) Switch the player into standby and empty the disc tray.
2) Using the front panel buttons, hold down the STOP button and press STANDBY/ON to switch the player back on."

Mine did the same a couple of days ago, I have taken in for repair, will get back once with details soon.