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HDMI to DVI problem

dhol913
06-09-2006, 07:48 AM
I just got a Toshiba DVR with a HDMI output. My TV has a DVI input. I bought a HDMI to DVI cable and connected them. The message reads "no usable signal". The RCA and Toshiba people can't offer any explainations. I even bought a second cable, but that didn't help.
Any suggestions?
Dan

borromini
06-09-2006, 05:39 PM
Do you know if your TV's DVI port is HDCP compliant? What's the model number of your TV?

dhol913
06-10-2006, 05:44 AM
Thanks for the quick reply.
I don't know if the tv is HDCP compliant.
It's a RCA Scenium 61 model # HDLP 61 w 15 1yx1
Dan:hithere:

borromini
06-10-2006, 02:31 PM
I checked the online manual on RCA's site http://www.rca.com/documents/1614682B_702750_25.pdf

There is no mention of the DVI port being HDCP compliant. You'll need to call RCA to confirm get the answer to this specific question. If it's not HDCP compliant, which is a copy-protection scheme, then that may be why it won't display a signal from the Toshiba DVR. This will also be a problem with cable/sat HD receivers and the new HD-DVD and Blu-Ray players.

mfabien
06-10-2006, 03:01 PM
I checked the online manual on RCA's site http://www.rca.com/documents/1614682B_702750_25.pdf

There is no mention of the DVI port being HDCP compliant. You'll need to call RCA to confirm get the answer to this specific question. If it's not HDCP compliant, which is a copy-protection scheme, then that may be why it won't display a signal from the Toshiba DVR. This will also be a problem with cable/sat HD receivers and the new HD-DVD and Blu-Ray players.

I've checked the manual and on page 18 (100%) it is clear to me that it's a DVI-D (digital to digital) and there's an illustration of the connection that confirms it as a 24 pin DVI. DVI-D was not created for computers like DVI-I (29 pins). You are correct to say that no mention is made of being HDCP compliant, but, I've yet to see or hear of a DVI-D that was not. And to further that assumption, in the next paragraph it discusses the Firewire IEEE 1394 and there again no mention of the copy protection protocol which, for Firewire, is DTCP.

There is 99% chances that the DVI on that set is HDCP compliant.

borromini
06-10-2006, 11:24 PM
That still leaves a 1% chance that the error message is the result of no HDCP handshake. :D

mfabien
06-11-2006, 04:06 AM
That still leaves a 1% chance that the error message is the result of no HDCP handshake. :D

...or he could have an incompatible HDCP interface; My Toshiba TV cannot get a handshake with my DVR SA8000HD because of HDCP associated with the DVR's HDCP. And these Scientific Atlanta DVRs have this problem with half a dozen makes of HDTV.

But then, with an HDMI/DVI cable, my TV operates without a glitch when playing an HD-A1 HD DVD player.

dominator2
06-26-2006, 09:44 AM
I just got a Toshiba DVR with a HDMI output. My TV has a DVI input. I bought a HDMI to DVI cable and connected them. The message reads "no usable signal". The RCA and Toshiba people can't offer any explainations. I even bought a second cable, but that didn't help.
Any suggestions?
Dan
I know this is a little late but their is a menu where you have to switch the output from composite to hdmi. Hope you found it.:yippee:

stchman
06-29-2006, 01:10 PM
I just got a Toshiba DVR with a HDMI output. My TV has a DVI input. I bought a HDMI to DVI cable and connected them. The message reads "no usable signal". The RCA and Toshiba people can't offer any explainations. I even bought a second cable, but that didn't help.
Any suggestions?
Dan
The DVI port might be bad. Try hooking up another DVI device to it to see if you get a picture. I am going to assume you made an error in typing and meant to say Toshiba DVD instead of DVR. If your set is not HDCP compliant, you would get a message telling you. The "no usable signal" message you are getting meant that there is noting coming into the port. maybe your DVD player needs to have the HDMI port enabled in its menu.

stchman
06-29-2006, 01:12 PM
That still leaves a 1% chance that the error message is the result of no HDCP handshake. :D
If there was no handshake, there would not be the "no usable signal" message displayed. You would get colored snow if that was the case.

mfabien
06-29-2006, 01:29 PM
If there was no handshake, there would not be the "no usable signal" message displayed. You would get colored snow if that was the case.

Not exactly. I have a SA8000HD DVR since April 2004 and with all the updates, there is and never has been a handshake vis DVI. However, all internal data of the DVR are coming through: Guide, Settings, diagnostic pages and this proves that the cable is good. But there is no broadcasting of video or audio because of the lack of an HDCP handshake. There are half a dozen HDTV's equipped with a DVI input that cannot get a handshake with Scientific Atlanta DVR's. Handshakes may be more difficult with DVR's.

And then the DVI input of the same TV is able to handshake with an HD-A1 Toshiba HD DVD player via an HDMI/DVI cable.