In the USA, any of these Small NTSC TV's will become obsolete since they 
have no input for a converter to convert from the digital signal.

Try MCM electronics, possibly the security area or the have other small 
TV receivers.
 http://mcmelectronics.com/
If you are on their mailing list, they send out monthly fliers that have 
much reduced prices on things.

Dario Greggio wrote:
> Anybody can help me getting one of these? Some 2-3 yrs ago they were 
> quite common, now I seem not being able to buy them...
> Market has moved to larger ones, say 7". I need a smaller one for 
> video-door-bell.
> I can also retrofit a TV or such..
>
> Possibly, in Europe :)
>
> TIA
>
>   
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