Lighting problem

I have one of the Orbit fixtures with four daylight bulbs and two actinics. One
of the daylight bulbs is behaving erratically. It does not come on when the
others come on in the morning. It may or may not come on later in the day.

I replaced the bulb about 6 weeks back. For several weeks after that, it would
come on when the other three came on, but then it got erratic. The one which it
replaced was less than a year old.

What's your guess as to the problem?

George Patterson
The optimist is sure that we live in the best of all possible worlds. The
pessimist is afraid he's correct about that.

"George Patterson" wrote in message news:TMEJi.915$Wo4.18@trnddc03...
I have one of the Orbit fixtures with four daylight bulbs and two actinics. One
of the daylight bulbs is behaving erratically. It does not come on when the
others come on in the morning. It may or may not come on later in the day.

I replaced the bulb about 6 weeks back. For several weeks after that, it would
come on when the other three came on, but then it got erratic. The one which it
replaced was less than a year old.

What's your guess as to the problem?

Socket?
Wiring?
Moisture?

Hard to guess.. I would try to measure.

"Pszemol" wrote:

"George Patterson" wrote in message
news:TMEJi.915$Wo4.18@trnddc03...
I have one of the Orbit fixtures with four daylight bulbs and two
actinics. One
of the daylight bulbs is behaving erratically. It does not come on
when the others come on in the morning. It may or may not come on
later in the day.

I replaced the bulb about 6 weeks back. For several weeks after that,
it would come on when the other three came on, but then it got
erratic. The one which it replaced was less than a year old.

What's your guess as to the problem?

Socket?
Wiring?
Moisture?

Hard to guess.. I would try to measure.


Could be a bad starter.


--
i'm in ur kitchin eatin ur poptarts.

groo wrote on 9/29/2007 3:51 PM:
"Pszemol" wrote:

"George Patterson" wrote in message
news:TMEJi.915$Wo4.18@trnddc03...
I have one of the Orbit fixtures with four daylight bulbs and two
actinics. One
of the daylight bulbs is behaving erratically. It does not come on
when the others come on in the morning. It may or may not come on
later in the day.

I replaced the bulb about 6 weeks back. For several weeks after that,
it would come on when the other three came on, but then it got
erratic. The one which it replaced was less than a year old.

What's your guess as to the problem?
Socket?
Wiring?
Moisture?

Hard to guess.. I would try to measure.


Could be a bad starter.



I'm guessing that the orbit does not have a starter,
so that would leave the ballast as being the most
likely thing wrong.

Wayne Sallee

Orbit fixtures do not utilize starters. I would zero in first on the
contacts of the sockets / bulb and any wire connections..but mainly
the actual socket connection that contacts the bulbs contacts. I had
similar problems and a good cleaning fixed it. Even a little salt
creep does strange things. Then get a meter and do some voltage /
resistence readings. Could be a ballast, but could be a simple thing
like corroded socket / bulb contacts. Don't take it for granted that
a new bulb is free of oxide or corrosion,as I have purchased bulbs
that had a oxide film on them already and gave problems until the
contact pins were cleaned.