I have a viewfinder from a broken camcorder that I would like to convert to
a little TV / monitor, but I don't know the pinout for it.
From a similar model, if you have a 4 pin connector between the camcorder
and the CRT/board, then your 4 pins are likely to be
1: LED (for record mode, ground this leg to light LED).
2: Composite video
3: 0v (and video return)
4: 5v (Supply at around 100ma)
With some very basic probing around you should be able to identify the
ground leg (0v) -- check continuity to the outer of any phono/jack connectors,
or any large screening cans in the camcorder.
If the camcorder's not entirely dead, you should also be able to find the 5v
supply line to the CRT module by simply measuring between the known ground
and each other pin.
From there you have a 50-50 chance on the video input: Power up the
viewfinder and stuff a composite video signal into the remaining 2 pins and
see what happens
That's how I found the pinout ...
You may need to fit a 75ohm resistor between the composite video in to the
viewfinder and ground, depending on how it's designed and how you use it. I
found I needed the resistor, otherwise the picture was overbright and washed
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Mike Brown: mjb[at]pootle.demon.co.uk |
http://www.pootle.demon.co.uk/