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#8
03-31-2009, 02:32 AM
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How old are your PC bulbs? Modern ballasts generally do not require a separate starting unit for the lamps, it's incorporated in the ballast circuitry. Also, some newer T5HO ballasts have what is called EOL (end of life protection) which will turn off the lights shortly after start up if they are worn out or close to being worn out. Not sure if PC light ballasts have the same feature, but might be worth trying a new bulb(s) to see if that fixes the problem before you start looking for a new ballast.
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Mike 77g sumpless SW DIY 10 watt multi-chip LED build  http://www.canreef.com/vbulletin/showthread.php?t=82206
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