I have a Casio EV-570 hand held TV. Will this work after the switch over to digital broadcast.

The need depends on what country you live in. In the US,Canada,and Mexico there are no longer any analog TV signals Everything broadcast over the air is digital. A digital to analog converter is available so older TV's without a built in digital tuner can be used.

Here is a video of it being used with a VCR. http://www.youtube.com/watch?v=wfOHgWIXPJA It would be the same with a converter box. Although you would have to use coaxial cable with the antenna connector from radio shack. I have been looking for a way to convert analog portable's to digital but have come up empty handed.

Not if it does not have digital tuner

The only way is to use a standard "Set top box" or just use it as a video monitor for a VCR or DVD player - It has an A-V input that you can use, but it uses a 3.5mm jack socket (I think) - You'll need to determine the connections, but I'm sure it'll work fine. I'm just researching the conections myself. I'll re-post if I fine 'em.

You won't. Because the unit isn't likely to have an coaxial external cable input, there is no simple way to achieve this. Full-size sets not equipped for digital signals can accept the down-converted signal from a converter box that receives the digital signal and converts it to NTSC standards for older sets. Direct reception of the new signal requires an ATSC tuner and there is no way to provide that for your hand-held. It would be possible to use the output of a converter box clipped onto the antenna of your Casio and see the channels the converter box can receive but your hand-held wouldn't be very portable anymore. Sorry-

They are pretty much garbage. You can purchase portable digital TV.

See article here:
http://www.ezdigitaltv.com/Portable_Digital_TVs.html

Even though it's small, it's still a TV with a standard tuner. So you could use it with a converter box if you really wanted to. You would need to connect the box to the TV's external antenna connector with an appropriate adapter. Then the TV would stay on channel 3 (or 4) while you change channels through the converter box. But just like any other set without the new tuner, once the regular broadcasting ends it won't be able to pick up digital channels.

Nope. Check this page for information about the portable digital tvs: http://www.ezdigitaltv.com/Portable_Digital_TVs.html

Codes for all Casio TVs are available here http://casio.jp However, they are all in Japanese, so you'll have to run it through Google's translate service.. Hope that helps..

maybe its an ic or transistor problem