Just tried connecting the RF modulator into an even older TV (Panasonic CT-10R11S). This much older TV worked perfectly with the Roku using the RF modulator.
There must be some weird incompatibility between the Roku and the Toshiba CF27H40. This is really puzzling to me because all my other devices work perfectly with this TV. I can even use my MacBook Pro with a DVI to composite video connector without any problems. Not sure what is different about the Roku.
It really begins to look as if it is a TV incompatibility with the Roku 2XS. You do get a picture except it is black and white only...if there was a way to solve this one thing you would be okay.
It is possible the fact that Roku chose to use a special plug on one end of the composite signal..the plug that actually would be sending the Roku picture out to your TV...this unusual use of composite must not work well with the Toshiba TV. Instead of each RCA plug simply transmitting its signal on its own (video to video, audio to audio), one end of the connection is taking video and audio and separating them into the 3 plugs that actually go to the TV. The Toshiba is receiving audio and black and white video it seems.
This Roku I see also has an HDMI output that apparently has no "special" plug. Maybe there is a cable that has HDMI on one end and can convert that to the composite signals on the TV end.
I think I saw your TV does not have an HDMI input. I know people usually don't want to down convert HDMI but I wonder if there is such an item.
I have Toshiba DVD Recorders and do like the brand. Never like to give up on a problem so I will see if I can think of anything that might help. There are some very knowledgeable members here who have helped me in the past and I hope they check in here and see if they can think of a solution for you. Sorry for the problem.
For right now, it does seems as you have said....this particular TV and the Roku special plug have a problem getting color through to the TV. Maybe others here have other ideas to try.
I will look into the HDMI situation and see if there is something that can be done.
There are effective adapters like the one I have linked but for what they cost it may not be worth it. http://www.amazon.com/Composite-S-video ... te+adapter
There are cheap cables that convert hdmi to composite as well but in many cases they don't work very well. They're okay for still images and audio but often problematic for video.
I have been all over the Internet looking for items and also did spot this and also agree that for what they cost...it may not be worth it.
Maria: Take a look at the above link and see what you think of it.
By the way, I looked up the 4 new Roku boxes that are available now. I see that 3 of them:
the Roku LT, the Roku2 XD, the Roku2 XS all have the special 3.5mm plug needed to use their composite signal. I did see that the RokuHD (3000X) is the only 1 of the 4 where the back photo shows normal RCA composite plugs, and also the picture in the quickstart guide shows this cable is included. I'm not sure what this sells for now but if you can't find any other way to get your color and you really like the Roku and the Toshiba TV, you might consider getting this particular one...if for any reason it doesn't work right...you can return it for a refund. If it gets you color then you can keep the Roku2XS as a backup.
I have read lots of reviews on Google today and see that some Toshiba TVs have no problem with the RF unit and/or Roku and some do....someone suggested there should be some place that publishes compatible TVS. But I still haven't given up trying to find a solution for you, using the equipment you already have.
In your TV manual, it says if no color or poor color, to see about adjusting TINT and COLOR in the Picture Menu. Also, I assume you are not using the ROku HDMI port at all.
I know you are trying everything you possibly can ...I did have one thought right now...that I don't think has been tried...unplug all the RCA connections to the RF..so you can set the input source to TV or VIDEO and the VIDEO choice will only have the Roku connected. In each A/V input, connect the Roku, choose VIDEO as your selection, and be sure the side of your remote control is set to the VCR choice (but the Roku should be here) and see if with nothing else being connected...if the Roku shows color video in any input..when it is the only thing in the RF to chose from. Sometimes I have seen when there is a conflict on a TV channel that strange things can happen to the picture. So if there is only one item being accessed, it will at least eliminate the question of whether as a solo item, the Roku will do the video the way it should be. I know you have tried the Roku in a slot where you got color from something else but this suggestion is trying it in each slot without anything else having any priority conflict even if it is the smallest conflict.
Maybe sometimes something that doesn't seem to make sense...works. We can only hope there is that result somewhere in all this. I really enjoy my Roku and it does totally frustrate me when I see someone having a problem preventing them from also enjoying it. As long as you are willing to try things, you may get other suggestions here and I haven't given up.