I have sony handycam video 8 model CCDTR350E and i have removed the viewfinder to use elsewhere. the viewfinder has only 4 cables coming out, 1 white, 3 grey. any idea on how to find with is the video signal, + - and voltage and current for whole apparatus?

SOURCE: How do I hook up a Sony Handycam Video 8 CCD-TRV41 NTSC to view on television?

I still have my CCD-TRV41 and the manual intack. You will just need a audio/video cable (2-colored or 3-colored) to view your movies.

SOURCE: how to transfer video from a sony handycam 105e to a pc

I solved the problem by searching the internet until I found the programme that fixed my problem.

SOURCE: i am having a sony hi 8 ccd trv 58 model handycam.

CCD-TRV58 is analog camcorder and can not be connected with computer directly as camcorder does not have USB or iLink/ DV ports.
Computer needs digital format movie data to store / edit files.
You need to hook camcorder audio-video out to DVD recorder and burn DVD of camcorder movie so you will get digital format of movie. Put that DVD in computer and copy files for further process.

SOURCE: I have a Sony Handycam DCR-TRV720 Digital-8

This model has iLink: IEEE 1394 firewire port. If you don't have a firewire card, you can probably find one pretty cheap on the internet (try ebay).
Windows has movie maker, which when the camera is connected, will allow you to capture the video from the camera on the comptuer, although there is no DVD burner software at least on the XP version (not sure about Vista). I use Nero for the whole process: capture, edit, burn to DVD.

SOURCE: how to save videos from sony handycam to my home pc

you need to put the camera into playback mode
then go into the menu and go to the setup menu
Then USB streaming and turn it on
That should enable the computer to recognize the camera