Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems.

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Default Fluorescent starter-switch question

This question also, previously, posted to alt.home.repair

I have an older 18" fluorescent lamp that takes a 15WT8 bulb. As of this
morning, it no marcha. I suspect the starter switch, which is your
glass-tube type and is pretty black inside.

The problem is that I can't find any "15w" starter switches at any
location close to me. I can, however, cheaply and easily find a white,
cylindrical starter switch that says, "13w, 30w, 40w" on it.

Can I use this "13w, 30w, 40w" switch with my 15w lamp?


--
Tegger
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Default Fluorescent starter-switch question


"Tegger"

I have an older 18" fluorescent lamp that takes a 15WT8 bulb. As of this
morning, it no marcha. I suspect the starter switch, which is your
glass-tube type and is pretty black inside.

The problem is that I can't find any "15w" starter switches at any
location close to me. I can, however, cheaply and easily find a white,
cylindrical starter switch that says, "13w, 30w, 40w" on it.

Can I use this "13w, 30w, 40w" switch with my 15w lamp?



** Most single tube starters are " Universal " ie 4-65W or 4-80W units.



.... Phil


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Default Fluorescent starter-switch question

"Phil Allison" wrote in news:9mprnlF391U1
@mid.individual.net:


"Tegger"

I have an older 18" fluorescent lamp that takes a 15WT8 bulb. As of this
morning, it no marcha. I suspect the starter switch, which is your
glass-tube type and is pretty black inside.

The problem is that I can't find any "15w" starter switches at any
location close to me. I can, however, cheaply and easily find a white,
cylindrical starter switch that says, "13w, 30w, 40w" on it.

Can I use this "13w, 30w, 40w" switch with my 15w lamp?



** Most single tube starters are " Universal " ie 4-65W or 4-80W units.




Thank you.

But why the listing of three discrete wattages, rather than an upper-and-
lower range of wattages?


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Tegger
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Default Fluorescent starter-switch question


"Tegger"
"Phil Allison"
"Tegger"

I have an older 18" fluorescent lamp that takes a 15WT8 bulb. As of this
morning, it no marcha. I suspect the starter switch, which is your
glass-tube type and is pretty black inside.

The problem is that I can't find any "15w" starter switches at any
location close to me. I can, however, cheaply and easily find a white,
cylindrical starter switch that says, "13w, 30w, 40w" on it.

Can I use this "13w, 30w, 40w" switch with my 15w lamp?



** Most single tube starters are " Universal " ie 4-65W or 4-80W units.


Thank you.

But why the listing of three discrete wattages, rather than an upper-and-
lower range of wattages?


** Marketing reasons.



.... Phil



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Default Fluorescent starter-switch question

"Phil Allison" wrote in
:


"Tegger"



But why the listing of three discrete wattages, rather than an
upper-and- lower range of wattages?


** Marketing reasons.



So I can safely use this multi-rated starter for my 15w fixture?


--
Tegger


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Default Fluorescent starter-switch question


"Tegger"
"Phil Allison"
"Tegger"



But why the listing of three discrete wattages, rather than an
upper-and- lower range of wattages?


** Marketing reasons.


So I can safely use this multi-rated starter for my 15w fixture?



** Been using " 4-80 W " starters on my 15W desk lamp for decades.



.... Phil




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Default Fluorescent starter-switch question

On Jan 7, 6:56*am, Tegger wrote:
"Phil Allison" wrote :



"Tegger"


But why the listing of three discrete wattages, rather than an
upper-and- lower range of wattages?


** Marketing reasons.


So I can safely use this multi-rated starter for my 15w fixture?

--
Tegger


See - we treat you just as nice here as on alt home repair.
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Default Fluorescent starter-switch question

" wrote in
:



See - we treat you just as nice here as on alt home repair.



Appreciate that.

Last time I posted here was many years ago, in relation to a microwave
oven. I was roundly scolded by somebody named "Sam Goldwasser", evidently
because I had posted an ignorant question.



--
Tegger
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Default Fluorescent starter-switch question

"Phil Allison" wrote in news:9mqvhnFst9U1
@mid.individual.net:


"Tegger"
"Phil Allison"
"Tegger"



But why the listing of three discrete wattages, rather than an
upper-and- lower range of wattages?


** Marketing reasons.


So I can safely use this multi-rated starter for my 15w fixture?



** Been using " 4-80 W " starters on my 15W desk lamp for decades.



... Phil







An update: It turns out that the failure was almost certainly /not/ due to
the starter, so it's a good thing I didn't blow $4 on a new one. I removed
the starter from the fixture for testing purposes, leaving bare wire-ends
on the bypass circuit.

I tried three bulbs, two brand-new. Plus I tested the tubes' filaments for
continuity. All tested good, and all worked in another fixture.

I also tested for continuity within the fixture where it seemed logical to
see it. I assumed I'd find an open through the ballast, which I did find.

But I guessed that when the ballast was fed with (a measured) 123VAC, I'd
see something similar across the wires where the starter was, but all I
found was 2.5VAC. That appears to be not enough to strike a spark, and no
spark was had, no matter how slowly I brought the wires together.

My guess now is that the ballast is bad. In any case, I went to Walmart and
bought a near dead-ringer of my old GE unit for a whopping $13. So this
matter is done. Thanks, Phil.


--
Tegger
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Default Fluorescent starter-switch question

On Jan 7, 6:15*pm, Tegger wrote:
"Phil Allison" wrote in news:9mqvhnFst9U1
@mid.individual.net:





"Tegger"
"Phil Allison"
"Tegger"


But why the listing of three discrete wattages, rather than an
upper-and- lower range of wattages?


** Marketing reasons.


So I can safely use this multi-rated starter for my 15w fixture?


** Been using " 4-80 W " starters on my 15W desk lamp for decades.


... *Phil


An update: It turns out that the failure was almost certainly /not/ due to
the starter, so it's a good thing I didn't blow $4 on a new one. I removed
the starter from the fixture for testing purposes, leaving bare wire-ends
on the bypass circuit.

I tried three bulbs, two brand-new. Plus I tested the tubes' filaments for
continuity. All tested good, and all worked in another fixture.

I also tested for continuity within the fixture where it seemed logical to
see it. I assumed I'd find an open through the ballast, which I did find.

But I guessed that when the ballast was fed with (a measured) 123VAC, I'd
see something similar across the wires where the starter was, but all I
found was 2.5VAC. That appears to be not enough to strike a spark, and no
spark was had, no matter how slowly I brought the wires together.

My guess now is that the ballast is bad. In any case, I went to Walmart and
bought a near dead-ringer of my old GE unit for a whopping $13. So this
matter is done. Thanks, Phil.

--
Tegger


Except for the fact that China got another dollar out of the deal and
Walmart got twelve. Lenny
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