When plugging antenna in 37: protron tv do I use analog input or digital input?

Only the older Analog type televisions get snow from lack of signal. The modern Digital TV gets pixilated. like missing pieces.
And on re-reading the title of your question, it does say CRT...... As in Cathode Ray Tube. (I thought they were all gone now, all around the world) Anyhow.... has your country switched off it's analog tv transmissions. This would give you snow. Because there is no Transmission. Seems unlikely they would stop transmission in the middle of what your watching.
So
Do you have a Digital Set Top Box feeding the TV? This would pick up Digital TV transmissions and convert them to your old CRT TV Screen. Knowing this should help you diagnose the problem.
Check the antenna input to your digital box and connections from the STB to your TV. They probably use a Yellow video cable and a Red & White (Sound Left & Right). You didn't mention if sound was still there?
Perhaps someone has pressed the remote control and the TV has jumped to one of the Antenna Channel inputs rather than the Video input (Yellow Video input)?
Might be that Simple.....
Good Luck

You have an analog TV, meaning that the tuner in your TV is analog only. You must buy a digital converter to see broadcast Digital TV via your external antenna and it will be attached to the antenna input jack or other jack depending on how it comes out of the converter.

One bit of advice, there is no such thing as a "digital" antenna, they are all analog. Even a 50 year old, outside antenna aerial that you see out in the countryside will pick up the new Digital Broadcasts to be converted by a Digital Converter and displayed on a 50 year old TV.

cant find the place to connect the cable to the tv

did you switch the TV's incoming signal to digital antenna? For the cable box it was probably set to cable antenna or analog inputs, not all TV's have automatic switching for antenna feeds. My Mitsubishi has 1 digital and 1 analog antenna input and the cable box will only work through the antenna input if it's the analog antenna input and it's tuned to channel 3 or 4, -(or through a seprate HDMI, PROSCAN, SVCR,or a yellow RCA plug input)- and when the analog antenna input is selected the TV will tune all analog cable channels that the cable service offers if a box is not used. likewise the TV will not tune any channels at all if it's set to digital antenna inputs. It will tune all local channels only when set to digital antenna inputs.

Hi there,

Well you can follow the below steps -
1. Inspect the antenna for any signs of damage. Identify and examine the power adapter cord and the coaxial antenna cable for any rips tears or other defects.
2. Plug the adapter into the antenna's power adapter socket. It will be labeled "12V DC/Adapter". If you are using an antenna that does not require power, such as rabbit ears, you may skip this step.
3. Next connect the antenna cable to the television using the TV's "Antenna In/75 Ohm" input jack. Make sure the antenna connector is twisted tightly into place. Place the antenna on a sturdy surface such as the top of an entertainment center. If you have an older analog TV that is a non high definition ready/capable display and are using a digital to analog converter box, generally, the antenna will plug into the input of the converter and the output of the converter will plug into the antenna input of your TV. 
4. Plug the antenna's power supply into a 120V AC wall outlet. This will turn the antenna on. If you are using the "rabbit ears" style antenna, make sure that the each section of the antenna is fully extended. This will give you the best reception.
5. Turn on the TV and check for digital reception. You will know that you are receiving digital signals because the picture will be clear and free of any analog "snow" or other artifacts. Digital TV channels have DVD quality picture and sound.

Follow the below link for more help -

http://www.wonderhowto.com/how-to-hook-tv-antenna-094240/

Good Luck!!

Are you connected to cable TV or an outdoor antenna? If on cable TV check the signal on another TV or if on an outdoor antenna you will need a digital TV adaptor to pick up local stations due to them not being available in analog anymore. Please take moment to rate my answer. Thanks...

you don,t , the xbox 360 will have component cables and posibly an hdmi output , but you can plug the component cables directly to the tv in a auxillary input and on your menu screen it will either say video1 or video2 or video 3 ,you can put the cables from your xbox into those inputs on the tv and as long as your tv is also at that input you should have a signal , hope this helps ,glenn

its on the left side of the tv if your facing the screen in a little slot, there two different receptors one for digital signal and one for analog.

Try going into your menu and putting the input to Antenna, then reprogram, let me know!

what regular channels don't you get ?

to get the vcr to record the box you will need to either plug the box audio / video output jacks into the vcr audio / video input and antenna to tv OR plug RF antenna out of box to antenna in on the vcr and vcr antenna out to tv( or the video/audio out jacks on vcr to tv )