From a similar model, if you have a 4 pin connector between the camcorder
In article <0ndoc.83958$Dn1.2805@fe2.texas.rr.com>,
Matthew Domb <mdomb@austin.rr.com> wrote:
I have a viewfinder from a broken camcorder that I would like to convert
to
a little TV / monitor, but I don't know the pinout for it.
From a similar model, if you have a 4 pin connector between the camcorder
and the CRT/board, then your 4 pins are likely to be
1: LED (for record mode, ground this leg to light LED).
2: Composite video
3: 0v (and video return)
4: 5v (Supply at around 100ma)
With some very basic probing around you should be able to identify the
ground leg (0v) -- check continuity to the outer of any phono/jack
connectors,
or any large screening cans in the camcorder.
If the camcorder's not entirely dead, you should also be able to find the
5v
supply line to the CRT module by simply measuring between the known ground
and each other pin.
From there you have a 50-50 chance on the video input: Power up the
viewfinder and stuff a composite video signal into the remaining 2 pins
and
see what happens
That's how I found the pinout ...
You may need to fit a 75ohm resistor between the composite video in to the
viewfinder and ground, depending on how it's designed and how you use it.
I
found I needed the resistor, otherwise the picture was overbright and
washed
out.
Mike.
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Mike Brown: mjb[at]pootle.demon.co.uk | http://www.pootle.demon.co.uk/
That's scuppered my pinout then
Possibly: The CRT ones I've dismembered are a self contained b/w monitor,
In article <qUToc.99458$NR5.18308@fe1.texas.rr.com>,
Matthew Domb <mdomb@austin.rr.com> wrote:
I haven't been able to get it to work so far, but I'll try some more. It
has
a six pin connector.
That's scuppered my pinout then
I've heard of some viewfinders having separate horizontal/vertical sync
connections before, so perhaps that is the case?
Possibly: The CRT ones I've dismembered are a self contained b/w monitor,
taking composite video in. Which of course needs the sync recovering and
splitting out, so if it's available in the camcorder, why not keep it
separate? ... seems a good plan. If this *is* the case you'd need a sync
separator IC too to drive it.
It is a CRT viewfinder, not LCD, right?
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Mike Brown: mjb[at]pootle.demon.co.uk | http://www.pootle.demon.co.uk/
Somewhere in the camera is a chip that is driving the CCD to collect the
.... these sync signals would be sent on their own independent wires to the