HTPC HDMI and Panasonic TC-65PS64 Video Issue - AVS Forum
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post #1 of 6 Old 12-25-2013, 08:22 PM - Thread Starter
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I have an HTPC with Radeon 4250 built in graphics. The panasonic tv does not recognize the hdmi signal. The htpc detects the tv and acts like everything is ok. I have two other tv's with hdmi inputs. A olevia tv that is about 7-8 years old that works with the HTPC, and a best buy dynalux that does not work with the htpc. I've tried updating video drivers and another hdmi cable.


Anyone have any ideas?


Thanks
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post #2 of 6 Old 12-26-2013, 07:43 AM
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If you haven't done so already, check your graphics card settings to make sure that the computer is outputting a signal in one of the formats described on Page 22 of the TV's E-Manual. Also, try changing the order in which you turn the units on...sometimes a TV will ignore the signal from a computer if it doesn't arrive at just the right moment. Maybe in your case the TV needs to be on first, or vice versa.
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post #3 of 6 Old 12-26-2013, 09:08 AM - Thread Starter
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Rudy,

I appreciate the assistance. I tried the different resolutions as listed, and the order in which things are powered on, nothing works. The tv hdmi's work fine with the cable box and blu-ray. I'm thinking the HTPC hdmi is not compatible with the newer tv hdmi. Is that possible? it worked without any trouble on a much older tv. Any other ideas? Should I try a new video board with hdmi? I would have to purchase one. Any suggestions?

Thanks,

Alan
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post #4 of 6 Old 12-26-2013, 01:19 PM
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Alan,

I don't know much about graphics cards, but you are right...a newer video card may be just what you need to resolve the issue. If at all possible, purchase from a vendor who will allow you to return the card if it happens not to work. There's a lot of choices out there, but hopefully the first one you chose will be compatible with your TV.

Rudy
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post #5 of 6 Old 12-26-2013, 05:56 PM - Thread Starter
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I have a dvi to hdmi coming tomorrow. Let see how it works.
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post #6 of 6 Old 12-28-2013, 05:13 PM
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Quote:
Originally Posted by alanbk View Post

I have an HTPC with Radeon 4250 built in graphics. The panasonic tv does not recognize the hdmi signal. The htpc detects the tv and acts like everything is ok. I have two other tv's with hdmi inputs. A olevia tv that is about 7-8 years old that works with the HTPC, and a best buy dynalux that does not work with the htpc. I've tried updating video drivers and another hdmi cable. Anyone have any ideas? Thanks

I just looked up the Radeon 4250 specs and just as i suspected, it's HDMI output is not listed as being HDCP compliant, while the DVI output is HDCP compliant. Your old Olevia TV was probably before HDCP became a thing which would explain why it works via the Radeon's HDMI, when the more modern TVs do not.

The DVI-to-HDMI cable should provide a picture (but of course some sort of audio cable will have to be connected separately if you also want audio).

Randy
TC-P55ST60, TC-P50GT50, TC-P46G10, TH-42PZ700U, TH-42PX50U, HP LC2600N, TiVo Series3, TWC Cisco 8742HDC DVR, Onkyo TX-SR333, URC R40 Remote.
Pic of My A/V setup - http://cdn.avsforum.com/f/f1/900x900..._Img_4867.jpeg
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