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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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Can an old (30 yrs) ballast end up by quickly burning out new
starters? (This is in a 12" 32W circline bathroom fixture.) Would an old ballast have any telltale signs if it is malfunctioning? Would it have that burnt smell itself? Thanks. The light stopped working, so I replaced the ballast. No difference. So I opened the old and new starter cans (both are FS12) and both looked and smelled burnt. I don't know if the new starter was defective when I bought it, but it did provide a really slow start. |
#3
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On 31 Jan 2006 15:24:03 -0500, Sam Goldwasser
wrote: writes: Can an old (30 yrs) ballast end up by quickly burning out new starters? (This is in a 12" 32W circline bathroom fixture.) Would an old ballast have any telltale signs if it is malfunctioning? Would it have that burnt smell itself? Thanks. The light stopped working, so I replaced the ballast. No difference. So I opened the old and new starter cans (both are FS12) and both looked and smelled burnt. I don't know if the new starter was defective when I bought it, but it did provide a really slow start. Did you also replace the lamp? yes. They were matched by the guy at the hardware store. The lamp is 32 W and is, I think, T9. I can pull it down and look if that's crucial. I just put in a new starter, and everything works fine so far. (Except... the fixture is not grounded, and never was. It does take several tries to start. I saw that the FAQ says that the extra capacitance from grounding is helpful on starting.) Thanks. |
#4
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#5
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It is possible to have a defective ballast burn a starter. The new
generation of ballasts should be fully electronic, and not require the old fashioned ballast. Check the wiring diagram and instructions that goes with your ballast. If you change the ballast and the lamp, they are properly wired, and they are properly matched, there should not be any problem. Check to see that all the wiring was done correctly. Check to make sure that the ballast is for the AC mains voltage in in your area. -- JANA _____ wrote in message ... Can an old (30 yrs) ballast end up by quickly burning out new starters? (This is in a 12" 32W circline bathroom fixture.) Would an old ballast have any telltale signs if it is malfunctioning? Would it have that burnt smell itself? Thanks. The light stopped working, so I replaced the ballast. No difference. So I opened the old and new starter cans (both are FS12) and both looked and smelled burnt. I don't know if the new starter was defective when I bought it, but it did provide a really slow start. |
#6
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writes:
On 31 Jan 2006 15:24:03 -0500, Sam Goldwasser wrote: writes: Can an old (30 yrs) ballast end up by quickly burning out new starters? (This is in a 12" 32W circline bathroom fixture.) Would an old ballast have any telltale signs if it is malfunctioning? Would it have that burnt smell itself? Thanks. The light stopped working, so I replaced the ballast. No difference. So I opened the old and new starter cans (both are FS12) and both looked and smelled burnt. I don't know if the new starter was defective when I bought it, but it did provide a really slow start. Did you also replace the lamp? yes. They were matched by the guy at the hardware store. The lamp is 32 W and is, I think, T9. I can pull it down and look if that's crucial. I just put in a new starter, and everything works fine so far. (Except... the fixture is not grounded, and never was. It does take several tries to start. I saw that the FAQ says that the extra capacitance from grounding is helpful on starting.) Thanks. With a starter, that isn't critical. If the fixture behaves normally, I kind of doubt that the ballast is bad. --- sam | Sci.Electronics.Repair FAQ: http://www.repairfaq.org/ Repair | Main Table of Contents: http://www.repairfaq.org/REPAIR/ +Lasers | Sam's Laser FAQ: http://www.repairfaq.org/sam/lasersam.htm | Mirror Sites: http://www.repairfaq.org/REPAIR/F_mirror.html Important: Anything sent to the email address in the message header above is ignored unless my full name AND either lasers or electronics is included in the subject line. Or, you can contact me via the Feedback Form in the FAQs. |
#7
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#8
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I assume you mean coiled ballast, like a long transformer.
I see no reason why a ballast might burn starters: The ballast is connected to the mains and in series with: the first end of the first filament, the starter connected between the other end and the second filament, the end of the second filament which returns to the mains. Either a wong tube is used (dia 26 inst. of dia 38 very old fashioned but still used, or vice versa) or wrong tube power in case the tube isn't mounted in an OEM fixture. In addition, a starter must fit the tube power. Check the markings. "JANA" a écrit dans le message news: ... It is possible to have a defective ballast burn a starter. The new generation of ballasts should be fully electronic, and not require the old fashioned ballast. Check the wiring diagram and instructions that goes with your ballast. If you change the ballast and the lamp, they are properly wired, and they are properly matched, there should not be any problem. Check to see that all the wiring was done correctly. Check to make sure that the ballast is for the AC mains voltage in in your area. -- JANA _____ wrote in message ... Can an old (30 yrs) ballast end up by quickly burning out new starters? (This is in a 12" 32W circline bathroom fixture.) Would an old ballast have any telltale signs if it is malfunctioning? Would it have that burnt smell itself? Thanks. The light stopped working, so I replaced the ballast. No difference. So I opened the old and new starter cans (both are FS12) and both looked and smelled burnt. I don't know if the new starter was defective when I bought it, but it did provide a really slow start. |
#9
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