I'm guessing he read this part of the link provided by Spiderplant:
Q: I've set my V+ output to HD, but I don't have an HDTV and now I can't see any pictures
A: (Scientific-Atlanta) Hold in the Stop and Play/Pause buttons on the front panel, and press Reset. Keep Stop and Play/Pause held in until the display says 'boot'. After a few seconds the display should say 'outpt'. Press the Fast Forward button several times until the display says 'Sd', then press OK. Wait for the V+ to reboot then you should be back in SCART mode.
You can also use this method to switch the V+ into HD mode - either select "Hdrni" (HDMI) or "YPbPr" (component) before you press OK. And if you use the Rewind button, you can switch between 720p and 1080i
A nice little nugget of info I wasn't aware of.