Question about Sanyo DS27800 27" TV

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Can't get a antenna signal

I am having problems, i can't get antenna signal from the antenna or get the tv to work with my disc player either.

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Re: can't get a antenna signal

Sound like a tuner module. Processor may also be locked up, but I have experianced similiar problems on this set and found a bad tuner. Good Luck
NC Electronics
Mills, Wyoming

Posted on Jan 06, 2008

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I am attaching a digital set top box to this TV Model C21F200 and have a video/dvd player to attach as well. I can't seem to get both working. Can I tune the video to the TV with the set top box attached?

If your TV has AV inputs available, you can connect the video player there and switch to that input to watch it. I don't think your model does, though; I think it has only an antenna input connector. This means your set-top box will connect there but you have no place to connect the video player. In fact, most new video players only have AV outputs, and don't have an RF (radio frequency - a channel 3 or 4 TV signal) output connector, and you'd have problems connecting it anyway.

All is not lost, although you'll need some extra parts to hook everything up. I'm assuming the set-top box (STB) is going to your TV on channel 3 or 4, using a cable from the box to the TV antenna connector. If your video player does indeed have an RF output, the simple thing to do is get a splitter. They look like this:


Normally, a splitter is used to break one input signal (into the single connector) into two outputs (the connectors on the other side). But you can also use one backwards to combine two sources. So you can connect the RF cable from the STB to one output jack, connect the video player RF cable to the other, and connect the "input" side of the splitter to your TV antenna jack. If your STB is set for channel 3 output, set the video player for channel 4 so they won't interfere. Then you can tune the TV to channel 3 for TV signals from your STB, and to channel 4 for videos. I know, it sounds confusing.

If your video player doesn't have RF output, but just video and audio outputs, you need an RF converter. This device takes the AV output from the player and generates a channel 3 or 4 RF signal the TV can tune in. A typical converter looks like this:

Connect the AV outputs from the player to the jacks on the converter. The output cable from the STB will go to one of the round antenna connectors on the right, and the cable from the other one goes to your TV. When you aren't playing a DVD or tape, the converter passes the signal from the STB through to the TV. When you turn on the video player, the converter switches and you'll see the picture from the player. Most converters switch automatically, but on some you might have to flip a switch. RF converters are available from retailers who sell TVs or online.

I'm sorry if this seems unnecessarily complicated, but most TV sets today have plenty of inputs for all these things, and usually you just plug in the connecting cables and go. But with older sets or sets that don't offer the inputs, you need to go through these shenanigans. But once you have the parts hooked up, it's not too bad.

Hope this helps, and thanks for using Fixya!

Jan 01, 2011 | Hitachi C21-F200 21" TV

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I have a problem conecting my sharp 25h-M60 with my DVD plyer.I have found solution on Fixya. They said I have to use VCR. My question is: What does VCR mean?

If your TV does not have AV inputs (RCA jacks for video and audio), you can't plug the DVD player directly in to the set. One solution is to connect the DVD player to a video cassette recorder (VCR) using the "line in" jacks on the VCR, then using the channel 3 or 4 output from the VCR to the TV. This solution may not work with discs that have copy protection, though, and will give you an unwatchable picture.

For sets with no AV input, you need an RF converter. This is a device that takes the video and audio signals from a DVD player or other device and makes a channel 3 or 4 TV signal to the TV's antenna connector. Converters are available at most retailers where you can buy televisions, as well as online.

Jan 01, 2011 | Sharp 25H-M60 TV

1 Answer


may be your tv systems don't have an accessory for audio video input. but you can hookup that by using an RF modulator adapter, this is a converter from audio / video to RF signal and connected directly to your antenna connection. you can purchase that RF modulator adapter to an electronics store. 

Apr 18, 2010 | Sylvania SRT2319 TV

1 Answer

My tv got no sound..but if connect a video/dvd via rca ok.

Sounds like you have a tuner or an antenna problem. If you are using a DVT converter box to watch off the air TV, the signal has to be very good to get sound and picture. Try connecting a VCR or a DVD player trough the coax cable and see if it you get sound an pic on Channel 3 or 4. If you do, it is an antenna problem.

Nov 30, 2009 | Standard (CRT) Televisions

1 Answer

We have a tv upstairs and one down stairs, they

Since the antenna is on the roof the signal has further to travel to get to the downstairs antenna and as a result the signal is weaker. Install a device on the antenna line before the first TV called a signal booster. This unit plugs into the wall and gets connected to the antenna wire too. It will improve the signal for both televisions.

Aug 14, 2009 | Standard (CRT) Televisions

2 Answers

How do I boost a digital TV signal?

No don't buy an LCD TV! I mean, unless you want to, they are nice :-) But you'll still have the same antenna issue. I looked up your antenna, if it's actually working just fading in and out, try an in line amplifier first (radioshack 1501170), and if that doesn't fix your issue, time to upgrade your antenna. It does get a little pricier, but do keep in mind the whole set up is good for 10-20 years. Before going back to RadioShack, go to this website:

If you live closer than 15 miles, rabbit ears
If you live closer than 20 miles, omnidirectional
If you live closer than 50 miles, midrange outdoor (oldschool arial w/ rotator)
Further than 80 miles, you'll need a long range with rotator, perhaps even an amplifier to go with it. Print off what your results were on antenna web and bring it to a RadioShack or a local antenna store and they should be able to point you to the right antenna for your particular location.

Mar 15, 2009 | Toshiba 24AF42 24" TV

1 Answer

Cannot connect the coverter box

When you have your converter box hooked directly with coax to your tv, is your antenna then plugged into your converter box in the "antenna in" port? What do you mean by it doesn't work? Does it say no signal? If so, you just need a stronger antenna. If not, you may have a defective box, bring it back to the place you got it and see if they can help.

Dec 27, 2008 | Symphonic ST420FF 20" TV

1 Answer


You may need a stronger antenna or your neighbor may have only a VHF antenna and most of the digital channels are being broadcast over UHf. . First, though, check the antenna connection as if they are dirty, they may be lowering the signal strength (these are the connections at the antenna). Check for the angel to put the tv antenna at to pick up the most channels. Internal antenna work very poorly. I have been having no problem with my outdoor UHF/VHF antenna, it picks up the same amount of channels in analog and digital.

Oct 05, 2008 | Philips Magnavox 20MS233S 20" TV

1 Answer

Dvd player hook up


Jul 20, 2008 | Durabrand DWT1304 13" TV

3 Answers

Tv problem

Mine (2005 vintage) is doing the same thing. Wiggling the connector at the rear of the set cures the issue. however, it must be a loose connection inside. How about soldering the connector?

Any other ideas on how best to handle the soldering of the connector inside the set?

May 12, 2007 | Sanyo DS24425 24" TV

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