The 4000HD performs really well for the price, but there are compatibility issues. I wrote this recently in another post -
QUOTE (nico6)
Not an exact match for your situation here, but I have a the same Hotchip and a Soniq 42". <snip> On DVI all resolutions work A-OK. On component, 720p won't work but all others including 1080i do. Other members with 4000HD/Soniq combo report the same. I believe the Hotchip exhibits some incompatibilities depending on the display, and yours is just another incompat. The Hotchip website has firmware downloads, make sure you are at the latest. FYI I'm using component as DVI gives the slightest flicker on horizontal graphics, PQ on component cannot be faulted IMO.