No 1080p on new PS3?

What type of connection are you using? HDMI, component, composite, or RGB Scart?

The only way to get 1080P is with HDMI I think, someone else please confirm.

For video playback, HDMI is the only way to get 1080p.

It should up as

1920x1080p/60hz

or

1920x1080p/24hz

The PS3 can do 1080P over component (there's a checkbox for it at least).

have you tried the auto setup on ps3? like holding down ps3 button for 5 seconds then then adjust it in there?

What HDMI port is it plugged into? On the LN52A750 then state HDMI port 2 and rename the port reference to PC

Check your settings on both the PS3 and your 550. Check your cable. I get 1080p at 24fps from my PS3 across a 40' HDMI cable to an Epson 1080p UB projector.

Just a few thoughts...

Thought one...
Your Sammie is a 1920 x 1080 set. It is a native 1080p set. No worries there. But it is a 60Hz set not a 120Hz set, so no 24fps. Don't try to force it. All 24fps does anyway is add the flicker (dead black frames) you get from an old style film projector. At +100" maybe I can see the appeal (I don't use it myself, gives me a headache), but at 46" don't worry about it. Quasi 1080p 60Hz is friggin sweet.

Thought two...

HDMI cables come in different gauge wires. This--"The details in Blueray are extremely accurate in slow-moving or still scenes, but in motion or panning, there is static. (not the grain of std. dvd) much worse." can be caused by bumping up against the transfer limit of your HDMI cable. The limit is set by cable length vs gauge, forgoing manufacturer defect, or damage.
Make sure you have at least a B+ cable.

Good luck in your search.

Glad it's working. But, Dude--$100 for two cables, one of which doesn't work?!?

www.monoprice.com

Learn it, know it, live it. That $100 can get you 20 HDMI cables next time.

The "static" that you are seeing with Blu-ray may be the natural FILM grain of the movie... not to be confused with video artifacting or macroblocking like SD DVD.

1080p can resolve detail down to the film stock when properly transferred.

I disagree. Most BluRays are a 24fps source. Sending 24fps to the TV is the way to go if the TV will support it. If you send 60hz, the BluRay player will do a telecine interpolation on the source, then the TV will try to do a 2:3 pulldown to reduce judder. If the TV is 120hz, it will replay the single 24fps frame 5 times, then go to the next frame.

proletariatcsp- as you are still having problems, because of how an LCD panel works there is always going to be a small amount of blurriness in certain situations. You might be sensitive to this visual artifact. I notice it in the 50" and up panels.

TornadoTJ, the OP stated "Well i would have never bought my sammy had I known I wouldn't be able to enjoy Blueray via 24fps." What you are talking about is not "true" 1080p 24fps playback/"experience". You are talking about adjusting the cadence of a 24fps source to fit an arbitrary refresh rate. They can do that at 48, 72, 96, or 120Hz. (He has a 60Hz set, so no go here.) This would get rid of the shutter effect, but it's just as far from 24fps as 1080i.

Some sets convert 24Hz sources to 60Hz with a 2:3 pull-down, and then double the frame rate to the 120Hz of the display by repeating the interpolated frames twice. Judder in all its glory.

Other sets add black frames, or darker frames at their native 60, 120 or 180 Hz refresh rates, so that you only get 24fps. Shutter flicker in all its glory.

I guess what I'm saying is that if you want a the "true" 24fps experience you want flickering. If you aren't after that, (at this screen size) anything 1080i up is gravy. Ignore the 24fps marketing.

Sorry for straying a little off topic here. Just wanted to clarify my previous posts intent.

Well, this thread isnt too old, but I have the exact same problem as proletariatcsp did only big difference is I have a 46a650.

Only get 1080i on regular dvd's and "Mode not supported" displayed when I try to set up to 1080p output on ps3.

With the same cable, I can get 1080p with an upconverting dvd player, but not on the ps3.

Blu-rays display at 1920x1080[no i or p] @ 24hz.

I think its time for me to get a new cable.

yup check the cable. As others posted, monoprice is awesome for good and inexpensive cables.