I mentioned previously that the Panasonic WJ 545P special effects generator does not supply the necessary power to run the WV-3250 camera through the 10 pin connector. I had, at the time, shrugged this off as the external power supply works just fine.

What I didn't factor in was the element of sync, which happens to be quite crucial for legible video. As it stands, it would appear as if the WJ 545P cannot lock to a composite video signal at the PL-259 input (my abilities as an operator may be at fault here). At any rate, having the option to power the camera at the SEG is enticing, whether or not this will sort out my sync issues remains to be seen.

I believe I've already taken pictures of drilling metal, so let's just skip to the result. +12 volts at roughly 500 mA is fed at pin 10 (pictured with the blue wire sans heat shrink), referenced at pin 9 (behind the blue wire). Naturally the surrounding pins are to be left alone.

Not a whole lot of room to work here.

Here's the result. Some liquid electrical tape that was used to insulate the ends of the disconnected wires, since I have misplaced my heat shrink. The idea was that the end result would be cleaner than electrical tape which can unfurl over time. I wouldn't call this cleaner, so I'll just comfort myself on the permanence aspect.

A bit of heat & melt due to space constraints, could have been worse.

So there you have it, DC power input for camera channel 1. Since the SEG supports only two channels simultaneously I didn't see the point in modifying more than one input, as I have multiple SEGs that will cascade into one another (forming a loop if I choose) and the power supplies I have earmarked won't support more than a single camera. I'll just allocate channel 1 as a powered input for each.

About 20 years ago I dumpster dived an old Panasonic WV series Newvicon video camera and its broken VTR (which still supplied power) and fell in love with video feedback produced with the negative image function engaged. Sadly, this camera wound up stolen in 1993 while enjoying my first taste of communal living. Every once in a while, for over a decade, I would reminisce about that set-up and bemoan the fact that I didn't have a very solid footing in regards to rebuilding it, as I couldn't recall what it was. Of course, as my internet literacy grew I became a bit more proficient in searching, and eventually the string of widely spread out casual searches bore fruit.

Armed with the name of manufacturer & the type of element I was after I began my patient hunt, and eventually landed a good deal on a WV-3250 with power supply.

Of course, with one source comes the desire of additional input flexibility, so the search for a video mixer came next which led to this early example from Panasonic the WJ-545P.

Inputs & outputs are primarily UHF connectors.

Support for 5 cameras (the mixer only handles two channels at once) includes the EIAJ 10 pin connector that the Panasonic camera has, though the voltage feed that the camera requires is absent, so external PSU is still required. This would be an easy enough fix, though very low priority since I have the external supplies already.

At lower left of the above image is the wired side of the EIAJ connector, further reinforcing my satisfaction with using the external supplies. Also evident is a single wire ground buss that ties to chassis at one point.

I think very few machines were bothered by the construction of this unit.

You don't really see this sort of build outside the DIY circles any more, which is sort of a shame.

...unless you were the one assembling these, one right after the other. All grey wire is shielded & tied to ground wires.

TO-100 package IC in a protective sleeve. The IC count on this thing is fairly minimal.