Service manual for Sony KV 1400UB

[ProDave]

I'm looking for a service manual or part of, for a Sony KV1400 - UB which is a 25 year old 14" portable television, now considered to be almost a collectable item!

What I want to do is add a composite video input to the set, to use it as a video monitor. I've done this before on old sets, so know what I'm doing.

I just need a complete service manual, or circuits at least of the video section of the set, so I can choose a likely point to tap into.

Better still would be full details from someone that has done this to this set.