> Hi Mike,
>=20
> Thanks for your reply. This camera is similar to the Redlake Motionscope
> series from the mid to late 1990s.
>=20
> I am confident that there is something wrong - the level of "banding" mak=
es
> it impossible to actually see what is going on in the image and is clearl=
y not
> present in the photos taken by the seller.
>=20
> I am checking the power supply but having difficulty because I do not kno=
w
> what voltages are supposed to be on some of the connector pins and there
> do not seem to be marked test points on the PCB in the controller. I have=
 not
> tried opening up the camera itself yet.
>=20
> I am concerned that a power supply problem is not all that likely because=
 it
> was working before shipping. It is always possible that shipping could ha=
ve,
> say, made a tantalum cap fail when it was ready to fail but it can't make=
 an
> aluminum electrolytic go high ESR, for example. This is why I want to bee=
p-
> out the cable, too, but for that I need the pinout once again.
>=20
> Sean

I would get stuck into the power supply first, irrespective of what the vol=
tages measure. Your description would leave me to believe one of the main f=
ilter caps after the rectifier has a dry joint leading to an unfiltered sup=
ply rail causing a hum bar of the image.


--=20
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--=20
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