Repaired another of thse endoscope things, just mechanical damage to the
metal barrel surrounded "S video" connectors used as small polarised 4 way
connections. Sticking a 20D/ 50 mm focal length lens over the lens cover
means you can focus down to a conventional 16 pin DIL package to read
script. Image is then linear x2 so fills the height of the LCD screen.

If you were to cut away the waterproof lens cover and picked at the weak
glue around the LEDs and lens carrier you could unscrew it , web cam
fashion, to focus closer.
Anyway given up on this one , come to conclusion half the vimicro is kaput.
Annoyingly about 40 MHz clock and 9 output lines from the CCD work with
plenty of signal variation to content of view variation. But CVBS output is
corrupt , absolutely no image content. There are 3 sync pulses and 2 colour
bursts per line interval. Tried removing EEPROM as no clock burst , just
apparently matching L to H with 2 or 3 negative pulses only, then staying
high, on (presumably) SDA and SCK pins. Removed EEPROM and same signal on
vimicro pins , but then no o/p signal at all. Replaced with an as found
24C04 and same nothing out.
Probably too much of a workup to descramble those 9 lines to give even just
a monochrome image