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HDTV

HDTV (High-Definition Television) is a new type of television that offers better resolution than a standard analog television. The different types of HDTV displays include plasma, direct-view, front screen and rear screen projection.

3,605 Questions

What is maximum length of RG-59 coax?

RG59 is a video standard co-axial cable and is normally sold as an economy cable. Losses on this type of cable tend to be higher than more expensive cable.

A standard definition signal can be run in excess of 300 feet before losses are noticed but the signal quality relies not only on the cable but also the signal driver (the source) and the receiver (the display). If the source or receiver are not properly designed, there may be a tendency to show a ghost image appearing to the right of the original image.

For analog high definition signals (extremely rare today) the maximum distance will be much lower, perhaps in the region of 40 to 50 feet. If the application will be supporting HD signals, RG59 is probably not the best choice. Invest a little more and look for cables that have lower losses - PSF1/3, for example, is more expensive but also more effective.

Can plasma screen tilted will it damage the plasma screen?

yes.

most can tilt about 10 degrees back or forward, beyond that you're taking a big risk.

never, EVER, lay a plasma tv flat. Even if you're moving it and it's turned off.

The heavy glass can be de-laminated from the phosphors, blurring or ruining your picture.

If you really need to tilt your screen, the safest bet is an LCD.

Can you connect both DVI and D-sub cables to the same monitor?

By D-sub, it is safe to assume that it will be a VGA connector on a high density 15 pin D connector.

DVI is normally a digital video signal although it can also carry analog VGA signals as well. Some monitors and projectors will be able to accept both signals as two separate inputs, others may only accept digital DVI connections.

For those that accept analog on the DVI, they may also have a dedicated VGA connector as well. Better monitors will treat that as a separate input to DVI analog so the input selection should offer three separate inputs in that case. Some monitors may only have a single VGA input which may be fed from the DVI analog links and the VGA input at the same time. If this is the case. the DVI input should only be a digital feed if the VGA connector is in use.

The best advice is to check the monitor's user manual and see exactly how the inputs are arranged. If it's not clear, talk to the dealer or the manufacturer. Because all monitors and projectors are designed a little differently to others, it is impossible to offer a definitive answer here.

Is ABC broadcasting in 1080i or 720p?

Yes as are all the major networks. This doesn't mean every program is recorded in the 1080 standard, some might be 720 or less. If the original program was not recorded in 1080, the program won't be seen in 1080.

What do you do if your techwood 26832 HD does not turn on?

techwood 26832 hd flashes colours i have lost my remote control

Can you record a cable program on your VCR if your cable is run to the TV without a cable box?

Yes, you can as long as you have the coax cable connected to the VCR first and then to your TV.

Some TVs have RCA A/V outputs also and you can connect a VCR to them.

Even better is to use the RCA A/V connections from the cable box to VCR, VCR to TV.

Why is your HDTV signal interrupted when a train goes by and how can it be fixed?

As usual, the question's a bit too general in nature to supply you with a very specific answer, so I'll use some general replies in hopes that it'll help alleviate your problems.

If you're talking about the reception of HDTV signals over the air as in, `I have an antenna on the house and I'm watching a local TV station in HD', the signal you're receiving most likely is in the UHF range. UHF signals are very easy to block and they're also prone to reflections off of another surface and can be delayed, or `phase shifted' enough to cancel out the primary signal, thereby killing your TV picture and sound. Even a tree blocking the path, after a period of rain where the leaves have re-filled themselves with moisture can block the signal.

If you have a satellite TV system and you have your dish mounted in such a way that a train may pass between your dish and the satellite signal, that's sufficient enough to block the signal. And yes, you can have some of the same reflection issues with a satellite dish as you would with a UHF TV signal.

The answers are: 1. Raise the level of the antenna or dish. 2. Relocate the antenna or dish. 3. Susbcribe to cable. 4. Just live with it.

Do you need Audio cable for HDMI connection?

no the HDMI cable provides for both audio and HD video

I have my analog receiver hooked up properly but i can't get the main menu to show on tv all i get is snow on tv what do i need to do?

As of the DTV transition in June 2008, your tv and radio will no longer be able to receive analog signals of any kind. Some stations were running both analog and digital stations throughout the transition but now the only channels that are allowed to do so is public access stations (which run local programming, i.e. school events, etc.. NOT ABC, NBC, etc...) The only way for you to view programs now is to get a digital television, that includes standard definition (SDTV) and high definition (HDTV) with antenna, or you need to get a digital to analog converter box with antenna, or get cable or satellite service (cable companies are exempt from the transition but many cable companies have opted to switch to digital). If you have a digital tv (which most likely will have both an analog and digital tuner) or a converter box and you still see snow, then it either is not set up properly, or you do not have and antenna attached to it. Please keep in mind you do not need any sort of special antenna. What ever kind you have can be made to work with your set up. If you still need assistance please let me know. I was technical support specialist for the transition. Hope this helps.

Why is my new HD cable box malfunctioning?

Sometimes a cable box malfunctions because of a power surge that consequently fries the box, unfortunately. Other times the cable box is not compatible with the TV.

How to set up a new widescreen LCD monitor with an old HP Pavilion XE783 desktop to get the correct aspect ratio that is to avoid horizontal stretching of the images?

Search for the monitor's model number on Google and find out it's aspect ratio. Then write click on your desktop and go to Properties. Go to the Settings tab and adjust the screen resolution slider to any resolution where the ratio of the first number to the second is equal to your monitor's aspect ratio.

Or just try trial and error to find the best resolution.

Is there such thing as a screen that doubles up as a TV screen and a computer monitor?

Both Sony and Toshiba make combo TV/monitor systems. Other manufacturers such as Vizio probably do as well. Check TigerDirect. Also a Dynex flatscreen can be a TV/monitor system.

Is the optical intput on a JVC 42 inch for audio only or both audio and video?

The optical input on a TV is used for transmission of digital audio, in SPDIF format between devices, only.

What is the difference between a power conditioner and a surge protector?

A surge protector responds to a microsecond transient. Nothing (such as a circuit breaker) can block a surge. A surge simply blows through anything that may try to block it. Anything that works by disconnecting takes milliseconds to respond - long after a microsecond surge do damage.

Completely different devices are called surge protectors. Some only address one type transients made irrelevant by what is inside appliances. Others are for all types of surges. Protectors that would block or stop a surge do almost nothing useful. A completely different device, also called a surge protector, is for all types of surges. It even connects direct lightning strikes harmlessly to earth so that nothing inside a house is damaged.

A line conditioner is a subjective term that can apply to most anything. For example, a knot tied in a wire is a power conditioner. Not a very good one. But it does impede high frequency noise.

To define a power conditioner means an electrical anomaly must first be defined. A short list of anomalies include reverse polarity, RFI, high voltage, harmomics, EMC/EMI, frequency variation, noise, floating ground, hum, pops, power factor, sags, surges, and blackouts. Nothing addresses all.

Due to protection inside all appliances, some anomalies are already made irrelevant. Defining which anomaly each power conditioner addresses. For example, voltage can drop so low that lights dim to 50% intensity. Circuits already inside all electronics solve that anomaly. But that same anomaly might be harmful to a motorized appliance such as the refrigerator. So a power conditioner for that anomaly might be obtained.

Even voltage spikes of up to 600 volts are made irrelevant by 'power conditioner' circuits already inside 120 volt electronic appliances. Some anomalies are already solved.

Obviously, a surge protector is just another type of power conditioner. Power conditioner is a vague expression that successfully promotes sales. To say more means learning what anomalies that conditioner actually addresses. For example, no power conditioner blocks or disconnects fast enough from a surge. Not even a power conditioner also called a surge protector.

What is wrong when your projection TV picture is weak?

Could be anything from a poor adjustment of the user's menu settings to something more severe. Need a lot more info before it can be answered correctly.