It sounds to me like the RF modulator may be defective. TV broadcast
signals are quite different than the VGA signal coming out of a
computer. It sounds to me like the frequency is off, causing the loss of
color, and the vertical sync pulse is not being generated correctly,
causing the rolling. All of this is generated by the RF modulator.
Does the TV have any additional input jacks? Many had RCA jacks as well
as the antenna inputs. If you have and older DVD player with a TV out
signal, you may be able to use that as your RF Modulator.
Norm Higgs
http://forbiddenpc.com
http://forbiddenpc.blogspot.com
http://www.power-blog.com/info/4365
http://freetrafficbar.com?r=74276
On 2011-10-31 4:17 PM, Joan Leach wrote:
> A while back at Kmart I found an adapter that had audio/video plugs, S-Video and cable, I think it was Emerson, but I misplaced the packaging in a closet. It's something like a switch box from a computer, game console to TV. If memory serves it wasn't too expensive.
> Good luck,Joan in Reno
>
> --- On Mon, 10/31/11, BeautyIsAGeek<toyotaokiec@yahoo.com> wrote:
>
> From: BeautyIsAGeek<toyotaokiec@yahoo.com>
> Subject: Re: [Simply Computers] VGA-to-video converter gives rolling picture on TV
> To: simplycomputers2@yahoogroups.com
> Date: Monday, October 31, 2011, 3:36 PM
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> I know, right!
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> I've gotten some nice all-wood furniture off craigslist lately.
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> But what about the rolling picture problem? Any ideas how to get rid of it?
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> --- In simplycomputers2@yahoogroups.com, craftee97@... wrote:
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>> I BUY ALL OF MY TVS FROM CRAIGSLIST AND THEY WORK GREAT FRUGAL IS THE BEST WAY TO GO.
>> Sent from my Verizon Wireless BlackBerry
>> -----Original Message-----
>> From: "BeautyIsAGeek"<toyotaokiec@...>
>> Sender: simplycomputers2@yahoogroups.com
>> Date: Mon, 31 Oct 2011 17:06:29
>> To:<simplycomputers2@yahoogroups.com>
>> Reply-To: simplycomputers2@yahoogroups.com
>> Subject: [Simply Computers] VGA-to-video converter gives rolling picture on TV
>> I connected my desktop computer (XP Professional) at home to my TV using a VGA-to-video converter and RF modulator.
>> The TV is old, but it works great! And it fits in my entertainment center. That's one of the main reasons I haven't sprung for a new flat screen TV. It's a Philips Magnavox CRT 25" with stereo speakers built in. It cost $12.50 a couple of months ago at a second hand store. It only has connectors for coax and antenna, so that's why I used the RF modulator. I already had it because my old GE 19" TV was the one I bought in 1985, and it only had coax and antenna connectors, too. It still works, so it's been moved to a bedroom. (I know that seems OT, but it illustrates how FRUGAL I like to be!)
>> I was able to get the picture to show on the TV, but it had no color and would not stop rolling. I tried every refresh rate setting I could find on the computer, but nothing changed on the TV. It almost seemed like, since the computer was unable to receive any handshaking from the old TV, it refused to change anything in the signal that went to the TV. Or, was the RF modulator overriding the changes I was making on the computer?
>> The sound worked fine. I got it to the TV using an audio splitter cable that plugged into the VGA-to-video converter, then into the RF modulator. The sound connection only worked when the video was plugged in, too. There was also a USB cable that ran from the computer to the VGA-to-video converter. I did try hooking up external stereo speakers using just an audio cable, but they weren't powered, so no sound came out.
>> We ended up putting the computer next to the TV, covering the TV's display because the rolling was annoying, using a new 23" flat screen monitor on the computer, and the speakers built into the TV. I ran out of time to rig up anything else. (We were getting this ready for some friends of my kid to come over and watch some videos. My kid's idea was to have them gather around the laptop in the bedroom, but I said I didn't think that was a very good way to treat guests and suggested trying to use the big TV in the living room.)
>> I'm sure there are lots of different ways to accomplish my goal of playing the computer-based videos on the TV. (My kid didn't want to burn a DVD.) Is there anything else I can do to get the video on the TV to stop rolling and show color? It seemed like I was really close to getting it to work!
>> If we do this again and I can't come up with a way to make it play completely on the TV, I think I'll get a 3.5mm-to-3.5mm cable and run the audio to my boom box audio in. That should give good enough sound from the computer to not be annoying.
>> Still, I'd rather get it to play on the TV.
>> Ideas?
>> If you can't tell, I'm trying to avoid spending money I can't justify. In other words, I can't justify a new big HD TV and all the extra stuff (furniture!) go to with it. I didn't plan to buy the new computer flat screen monitor, but the old monitor was starting to flake out anyway, so I went ahead and got one.
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> ------------------------------------
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