I have a fluourescent lamp that has a button that I have to hold down
for a few seconds for the light to turn on. The switch is broke.
Anyone know where I could find such a specialty switch? I searched
around but no luck.
No, it's not that easy. I think Joseph was correct about the switch
type. The OP didn't say it, but likely that lamp has a second (usually
black) button you push to turn it off. The first (usually red) button
closed a toggling switch to apply power to the lamp, but when held down
a second momentary contact closed the filament circuit just like a
"starter" did. After a couple of seconds the filaments were hot and when
you released the button an inductive spike from the ballast started the
Pushing the second button toggled the switch off. Sometimes there was no
second button 'cause the first button had an "alternate on-off" switch
action in addition to the momentary contact.
If the OP really loves that old lamp he could replace the "broke" switch
with a slide or toggle on-off switch plus a NO momentary closed
pushbutton switch. It'd take two separate actions to light the lamp, but
only one to shut it off. That's providing the OP knows what to look for
and can trace out the wiring so he can figure out how to connect the two
That's probably what I'd do if that old lamp held memories for me and I
was going to be the only person using it. :-)
It is actually one of those magnifying glass lamps like on workbench
tables. It's a nice one so I want to fix the lamp if I can. I took the
broken switch apart to see what is wrong and how it works. The button
had a piece broken off and it is missing so I can't fix it.
The switch similar to described above. There are two parts actually.
One part turns on or off each time the button is pressed via a
ratcheting spinner. The 2nd part turns on only momentarily when the
switch is pressed.
I have seen 3 position toggle switches with the 3rd position spring
loaded. If I could find one of those I could make it work. I tried
looking in digi-key but didnt see one, though.
Yes, but the ones like that I've seen are all "center off" types which
make a momentary contact in one direction away from center and will
toggle and stay in the opposite direction. That won't do it for you, you
need to connect power to the lamp and then "play starter" by making and
breaking the filament circuit.
How about replacing the present switch with one of the commonly
available "twist" lamp switches and drill another hole to mount a NO
momenttary contact push button switch to start the lamp with?
STOP THE PRESSES! Can you fit this one in?
It has the switching characteristics you need, and is the "two button"
style I was bloviating about in my previous post. You'd need the "one
Ah, but I betcha those will use a regular on-off switch and a cheapo
glass bulb bimetal neon starter and paralleled capacitor (without a can)
wired right in.
I fixed GE undercounter light two weeks ago and it used one of those
wired in starters. (Problem was just a thermal fuse glued to the ballast
which had died of old age. wouldja believe I had a perfect match
replacement thermal fuse in my "hell box"?
Come to think of it, if he could fit in one of those wire-in starters he
could solve his problem with a simple on-off switch. Yeah, he could take
the starter out of the $10 light, along with the switch, couldn't he.
Have we overkilled this one yet?
Hi, I have the same kind of lamp with the same problem. It has a 22w circline
round fluorescent bulb. I finally found a switch after having the lamp tore
apart for a long time and now I can't remember how to wire it back up. My switch
has 4 contacts, socket has 2 blk and 2 white wires and of course 1 white and 1
black feed. Do you have any idea where I can find a wiring diagram for this
setup. Thanks, Larry
Yes, I too have one of those magnifiers and hate that kind of switch.
But you just reminded me, I have 3 electronic ballasts which could be
used for this lamp ... no starting needed and the ballast, actually a
switching high voltage power supply, ionizes the gasses without
starting. I'll have to see if I can retrofit one into the magnifier.
This email has been checked for viruses by Avast antivirus software.
What is the brand and model of the replacement switch you purchased? I was
hoping that Grainger would sell a replacement switch since their Lumapro 6MNU0
matches what I have. They told me today (9/15/15) that they don't sell the
replying to User Example, Jacksf wrote:
I actually found a lamp with a similar two-button switch and old floresent
workings. I'm upgrading it to an LED strip and want to keep the look of the red
and black push buttons so replacing them with similar switches that still have
red and black caps. Technically only the red will need to be pressed once for on
and again for off, but will maintain the look vs replacing with rocker switch.
Thanks everyone for the ideas. They are all good. I am not sure what I
will do, though. There isn't any spare room in the lamp to add a
starter and it would be hard to even add an extra switch in there. I'll
have to do some ciphering and figure out what I want to do. The link
you provided will be helpful.
Likely easier to buy a new lamp. I would look for one that has a more
modern circuit and does not need that kind of switch while I was at it.
It is a monetary contact switch maybe with a on off switch combined with
You could try the manufacturer, as some of those switches can be proprietary
to the light, and hard to come by as aftermarket items.
But don't be surprised if the new switch with shipping costs more than
replacing the whole light.
I have this type switch in my drafting lamp w/ 2 -18" FL bulbs. The base clamps
to the table and the light floats over the table. New it cost 120 dollars. Good
used ones are 50 to 75 dollars.
Does anybody know where I can just buy a switch? I'd put a starter in it and a
regular switch in but I'm not sure of the wiring schematic.
Seems like the switch would be a common thing, but I just searched for 2 hours
on line. tthhhhhht Zero~
Thanks for listening to my cry like a baby....
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