Philips VP406 LaserDisc Player Repair

From Nottinghack Wiki
Revision as of 19:30, 29 March 2025 by Asj (talk | contribs)
Jump to navigation Jump to search
Philips VP406 Repair
[[|border|frameless|220px|center]]
Primary Contact Aaron / Tim
Created 2025-03-26
Completed {{{completeddate}}}
Dormant {{{dormantdate}}}
Version {{{version}}}
Members Tim, JonW, Ali, Olivia, Aaron
Manufacturer {{{manufacturer}}}
Model {{{model}}}
Location [[{{{location}}}]]
GitHub / Repo {{{repo}}}
Status {{{status}}}
Type Undefined
Live Status {{{livestatus}}}

We're trying to fix a VP406 LaserDisc player. It lived under Tim's bed for many years and now we want to watch LaserDiscs during film night - but first, we must repair it. While the disc plays, and the TV syncs correctly, the video is offset. The issue appears to be before or around the PAL demodulator, since the on screen debugging menu is correctly positioned.

26th March 2025

  • Video plays, but is offset
  • Power switch doesn't work - removed and bridged temporarily
  • X2 RIFA capacitor exploded - removed

29th March 2025

  • Removed the other X2 capacitor, since it was probably also going to explode.
  • Lots of debugging. We think the issue is not with Board A but Board D, which presumably creates a line pulse but out of phase from the video.
  • Confirmed that the video feed going into the PAL modulator is alight, since the TV can sync to it.