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If it is a very old TV, more than likely it contains vacuum tubes that have gone bad. Vacuum tubes work by deflecting electrons inside a glass tube. This requires the tubes to be heated, with a small internal heater. The tubes have to warm up for them to work. This process should only take a minute or two. If it is taking hours the heaters are bad, or they arn't getting enough power to warm the tubes properly.

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โˆ™ 2005-11-30 20:42:48
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Q: Why would it take hours for an analog television to display a picture after it is switched on?
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Why are some converter boxes some cheap some expensive?

A Digital Television (DTV) Converter Box is an electronic device that converts the new free over-the-air digital signal into an analog signal viewable on older "analog" television set. The digital to analog converter box connects your antenna or rabbit ears to your TV set. It will allow you to continue watching TV after February 17, 2009, the day the transition to "all digital" takes place. A digital to analog converter box will not give you a digital picture on an analog TV set. Analog TV sets using the set top boxes will show digital broadcasts, but not in the full picture quality of digital TV. However, your picture will be better than it was with the old analog signal. Technically speaking about picture quality: The reason the picture quality won't be as good on an analog TV set is because of the display resolution. Analog TV screens aren't designed to display the same level of picture quality and resolution that is found in the digital TV signal.

Can you use set top box for analog tv?

Yes. If you are referring to a digital to analog converter box as a set top box. You can use that with your analog tv but you will still need an antenna. Your antenna gets the digital signal which is switched to analog via the box and is then able to be displayed by your analog tv.

How can you see out signal on oscillscope?

A; An analog oscilloscope will display a signal to a CRT the same principle as a TV can display movies

Bandwidth for TV vidio signal is?

6 Megacycles in analog. This includes picture, sound and guard bands.

What is digital and analog?

Analog TV:Analog (or analogue) television encodes television picture and sound information and transmits it as an analog signal: one in which the message conveyed by the broadcast signal is a function of deliberate variations in the amplitude and/or frequency of the signal. All systems preceding digital television, such as NTSC, PAL or SECAM are analog television systems. Digital TV:Digital television (DTV) is the sending and receiving of moving images and sound by discrete (digital) signals, in contrast to the analog signals used by analog TV.

Why digital signal is better than analog signal?

Many reasons, but the simple answer is that it allows pay TV providers to offer more channels with better picture quality than analog.

Why was analog switched to digital?

Because it had so many more advantages than than analogue radio and tv. It has better sound quality, less interference...

What is analog-TV?

Its a television with an analog tuner built in. It picks up analog signals.

What is the difference with digital cable versus regular cable?

Analog cable, or "regular" cable versus Digital cable, the difference can be seen when you put two televisions side by side with one using analog cable and one using digital cable. Through this, you will see that digital cable television picture quality is much better in comparison to the analog cable. To put it simply, digital cable provides a better picture.

What does the digital TV switch involve?

It is not illegal not to switch. It's just if everybody else are switched to digital, you don't have anything to watch. Basically it used to be analog signal masts were sending out to your TV, nowadays it's (mainly) digital as it guarantees better quality. Soon you'll don't get analog signal anymore, so to watch TV you have to be digital.

Why digital TV is better than analog TV?

it isn't, digital tv may seem better and bigger, but with annalog tv's the pixel resolution and picture quality is better.

Is the CRT analog or digital?

A CRT (cathode ray tube) is an analog component. Images are created by continuously varying the electron beam current which in turn changes the intensity of the phosphor light output. Additionally, the beam is scanned from left to right and from top to bottom using analog drive circuitry. Most televisions and monitors that use them are also fully analog but be aware that there are also televisions and monitors that accept and display digital video signals.

What is analog TV?

Analog television was first used in the 1930s. Analog signals are sent by varying voltage, radio frequencies, and static images.

When did analog tv start?

The fist analog TVs were developed in the 1950s. In most countries of the world today, analog signals have been discontinued.

Do I need a digital television antenna if I have a satellite such as DirectTV?

Broadcast TV stations in the U.S. have switched from analog to digital transmissions. This Fact Sheet provides information on TV antennas and tips for obtaining good quality reception of digital broadcasts.

Can you convert a TV to digital TV?

It is not possible to convert an analog television to a digital television. However, by using a digital set top receiver, it is possible to receive digital signals and deliver them as an analog signal to an analog television. Digital receivers are not expensive, starting at around $25 in US and £20 in the UK. They will allow all terrestrial channels to be received in the same way that a digital television will. Cable and satellite receivers can also receive digital signals and will provide an analog output that can be used with older televisions. With these options, there is no need to replace analog televisions right away. Remember that analog only televisions will not be HD so don't expect a sudden increase in picture quality when the digital receivers are used.

Will your digital television that's receiving an analog signal from comcast be a clear picture digital signal when you go digital in 2009?

Only if you have a digital output on your cable box. If not, it'll end up being a digital signal, converted to analog and then reconverted by your TV back to digital. Besides, the digital changeover date is only for local television stations when they turn off their analog transmitters. This means that if you currently have cable or satellite with analog outp[uts, that aspect of it shouldn't change.

How do you display analog clock in Windows 8 laptop?


Is GE TV Model 27GT617 analog or digital?

27" Analog.

What advantage do digital television signals provide over analog signals?

Digital signals produce a higher quality picture and many programs can be broadcast on a single digital channel, whereas only one program can be broadcast on an analog channel

What is the difference between an analog multimeter and a digital multimeter?

An analog meter uses an analog display - a needle that physically moves around. A digital meter will have an LCD display.

What is the difference between an analog monitor and a digital monitor?

The analog signal is continuous signal and analog monitor like picture tube type TV had been used . Digital signal is abinary signal and we use digital monitors those are light in weight , they might have bigger screen and lesss raiation affects.

Can you used cathode ray oscilloscope as television?

Yes, some could be used for analog monochrome TV but lots of extra circuits would be needed. Picture would be green. Cost of oscilloscope would likely be several times a portable analog TV of similar size, even before adding extra circuits.

How is an analog signal used in a tv?

In standard definition TV sets, analog covers most anything picture related plus the audio, once the FM signal is demodulated. In the new HDTV (digital sets) about the only portion of the TV is the sound system once it's been separated from the digital audio stream.

How do you get analog channels on your rca television?

To get analog channels on an RCA Television a analog converter box needs to be purchased. Most local electronic retailers carry these devices.

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