Use this tag for technical aspects of TV (video formats, for example). Shopping questions are off-topic and repair questions might be too localized.

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-3
votes
0answers
17 views

Toshiba 27a51 tv component video input not compatible [on hold]

I am trying to connect a Dish Network receiver with component output to the Toshiba 27a51 tv's component video input. The the image is scrambled. Connecting the Dish to another newer model RCA tv ...
1
vote
3answers
75 views

Replacing capacitor from unworking TV with some other capatitors which has not the same value [on hold]

I am repairing (trying to repair) my TV. I found 1 capacitor 25V \$1500\mu\$F which i think is bad (it has some weird shape at top) I don't have any capacitors with that value but I have some similar ...
-1
votes
1answer
66 views

How boost a DVB-C signal [closed]

I receive a DVB-C signal from my broadcast TV provider, and I use coaxial cables and some splitters to connect my three televisions to the coaxial wall-socket. Unfortunately I have problems to ...
-1
votes
3answers
97 views

Why does a screen resoltion is same for both a mobile phone and a 60inch TV Screen? [closed]

Resolution of say 1080 x 720 means 1080 vertical lines of pixels and 720 horizontal line of pixels. This means a total of 777,600 numbers of pixels across the width and breadth of the screen. Now for ...
3
votes
1answer
235 views

What is this component and what is its use?

I found this in CRT TV on the CRT tube driver PCB. What are they and what is their schematic symbol?
1
vote
1answer
97 views

Will a 1950s television still work? [closed]

My company has a Philco Predicta television model H3407 as described here: Philco Predicta description. Will this TV still work with modern broadcasts?
0
votes
1answer
178 views

TV signal into an Oscilloscope

I'm plugging TV signal cable directly into an oscilloscope. TV cable looks like this: First I connected outer shell of TV cable connector to GND of oscilloscope BNC cable and center to the center of ...
0
votes
1answer
183 views

Streaming UHF/VHF/AM/FM over IP

I am working on a project that can stream TV and Radio signals over IP. I found a device to capture the signals and send them over IP realtek-rtl2832u but I am ...
3
votes
5answers
1k views

Why there is 625 lines [ PAL ] in T.V. scanning or odd lines?

I can't get why there are 625 lines in a PAL scanning system. I read R.R.Gulatti's standard book. In that there is a reason like: "Suppose there are x lines in 1 field. Then for two field its ...
0
votes
1answer
58 views

AV.link dongle (SCART's CEC)

I am looking for a device I can plug into an old TV's SCART port, which will feed me remote control commands (like 'arrow-up', 'OK', 'menu', etc.) received over the SCART connector's AV.link (control ...
1
vote
2answers
122 views

What is the difference between a tuner and an antenna?

I was just told by my TV's customer service that my TV had a tuner but no Antenna as a response to my question - Can I use my TV's inbuilt Antenna to pick up over the air channels? I was wondering if ...
0
votes
1answer
151 views

Differenece between TV Indoor antenna and Satellite Dish [closed]

Satellite Dish for TVs enables you to gain access to paid tv shows through subscription. I'd like to know if the Indoor antenna specs below can also get paid signals on the air and if it could be an ...
3
votes
2answers
1k views

Is it possible to combine independent digital TV antennas?

Is it possible to create a TV antenna that is composed of smaller antennas that are pointed to different broadcast centers? So in essence, many antennas for just a single digital TV. Is it possible ...
0
votes
2answers
58 views

IR confirmation

I want a system to send a signal by IR, to turn on a TV. I need to check if the TV is really on by receiving a confirmation. Is there a way to send the signal, and send an other signal from the TV to ...
1
vote
1answer
256 views

How do I operate a tuner of digital satellite receiver using a microcontroller?

I want to operate this tuner of my digital satellite receiver. This is the tuner: They wrote some numbers and words around of the tuner: and the name and model of the receiver is ...
0
votes
1answer
359 views

How to open a 32" Philips CRT TV for service [closed]

I have an old and faithful (well, until today) 32" Philips CRT TV (32pw9309) that was purchased on 2004 and served me very well since then. Today, while the kids were watching a DVD, we heard a "pop" ...
4
votes
1answer
164 views

How do receivers know what to output to radio speaker or TV screen?

I understand that receivers are often used with mixers which take the sum and difference of two signals to make an output signal. How does a radio signal of say 102.5 MHz know to tell the speakers to ...
-2
votes
1answer
162 views

A Strange CRT TV Interlace Issue [closed]

Ours has a strange problem. The top 2" of the picture show what seems to be the two scans of the interlace are out of sync or something. When the screen is blank/black (playing just music through the ...
1
vote
1answer
211 views

Why cable TV frequency range ends at 1 GHz?

Currently frequencies 50-1000 MHz are allocated for TV and data transfers. I understand why there are limitations for aerial or satellite transmissions, but why are they retained for cable ...
-1
votes
1answer
107 views

How is (non-interfering) data communication possible over the tv spectrum? What is the technology used?

I've heard that FCC-US (Federal Communication Commission - United States) has approved the free usage of TV spectrum for wireless communication. How is it possible to enable such data communication ...
-2
votes
1answer
78 views

Analog and digital cable encoding [closed]

I am looking to have a card encode multiple channels on to a single cable tv line so that several tv's in the house could change channels to a different stream from the same source like how a cable ...
0
votes
2answers
415 views

Computer case causing interference with TV

I've recently changed my computer case to a new, bigger case. However, after I changed this case over, I can no longer watch TV due to interference with the signal. I have removed every output to my ...
1
vote
1answer
221 views

How can PAL (TV) encode 3 colors in 1 phase?

As I understand it luminance is the amplitude of the signal, and color is the phase. You need 2 color signals (the third one can be derived from the other 2, like B = 1 - R - G). How can 1 phase ...
-2
votes
4answers
663 views

How can I repair my old tube TV safely?

I got an old Nokia tube television from my grandmother. I tested it, but there is no picture. I can hear the audio. The filament is not glowing. I am studying EE, but there I only dealt with low ...
3
votes
1answer
1k views

Color problems when turning a CRT TV set into an oscilloscope

I found an old CRT TV set in the garbage. It didn't work, always showing the "snow effect", even when I connected it to another device via the SCART port. So I followed an online tutorial to make it ...
0
votes
1answer
227 views

How to connect MP3 player to TV using RCA? [closed]

I have a personal MP3 player with 3.5mm stereo socket for output. I have made a 3.5mm to RCA stereo cable by connecting the shorter inputs to the centers of each of the Left and Right RCA jacks and ...
-2
votes
1answer
175 views

HDMI to Component [closed]

I'm trying to use my Raspberry PI with HDMI output to my older TV with component in. Raspberry PI -> HDMI --> COMPONENT --> TV (tv specs in link) Is there any way to do this? The screen size is 32", ...
2
votes
2answers
195 views

What are some economical ways to get a remote analog video feed?

I am a computer programmer and I like playing with robots. But I don't have access to tons of cool toys so I try to make do with what I've got. The other day I was trying to navigate an R/C car ...
2
votes
1answer
2k views

V-control broken on old (CRT) TV-Set?

I found a TV-Set in a dumpster, and checked if it's still working. Indeed it is somewhat functional, but the picture is distorted: (screenshot of the TV) Depending how bright the picture is, it ...
4
votes
1answer
869 views

Can a small gauge wire be used in a fractal antenna?

I want to make a fractal antenna to replace an old set of rabbit ears. All the guides I've seen have used a thicker wire (metal coat hangers seem popular). While I don't have any hangers, I do have an ...
1
vote
2answers
376 views

Testing a video transmitter for video bandwidth

I need to test the bandwidth of a variety of video transmitters to figure out the maximum resolution I can safely output without losing detail. To this end, I came up with a solution using a TV ...
3
votes
2answers
6k views

Philips/Magnavox LCD TV Service UART / ComPair

I have a Magnavox 42MF438B/27 42" LCD TV. The IR sensor (or something related) quit working after awhile, so we have been unable to use the remote. Today, I was digging around behind the TV and ...
3
votes
3answers
247 views

DIY Single-Channel Television

My building recently installed a CCTV camera system. Anyone with cable TV is able to tune into channel XX and watch the CCTV stream live. I want to get a cheap and small LCD (≤7") and build a ...
10
votes
2answers
1k views

Generating PAL tv signal using a PIC

I'm trying to generate PAL tv signals using a PIC24FJ64GB002 using a similar method to the circuit described half way down this page. The only difference is that my circuit needs to run at 3v instead ...