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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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#1
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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 |
#2
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![]() "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 |
#3
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"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? -- Tegger |
#4
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![]() "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 |
#5
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"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 |
#6
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![]() "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 |
#7
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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. |
#8
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" 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 |
#9
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"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 |
#10
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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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