Question about Malibu Intermatic Inc. ML300RTW 300-Watt Power Pack with Timer and Ground S
My model number is on a sticker inside the door.
I have the 300 watt, and it matches the total wattage of my bulbs.
A lot of people ask for replacement Malibu tripper pins on Fixya, so your tripper pins might be worn down. I cannot find Malibu trippers, even on e-bay. And the new timer clocks are electronic.
Check your circuit breaker to see if unit is getting electricity, including GFCIs in bathroom.
Plug hair dryer in same plug as Malibu to see if there is power
Brush a wire across the screw terminals to see if there is any spark going to bulbs.
It's unlikely that all the bubs failed at once, but if power pack shows spark on the terminals, the bulbs should be getting electricity.
If a couple bulbs burned out, the power pack can burn out the others.
Unplug power pack until you get bulbs replaced.
Unfortunately if the power pack stops operating, it is broken.
I did find some tips to help folks preserve their power packs:
1) Match wattage of bulbs with wattage of power pack
-15 each X 20 watt bulbs = 300 watts, so install 300Watt power pack
2) Installing a 500W power pack on 300W of bulbs will burn out bulbs and power pack.
3) Replace bulbs as soon as they burn out or other bulbs will burn out and power pack will burn out.
4) When working on bulbs, unplug power pack or it may burn out.
Posted on Nov 12, 2010
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Posted on Jan 02, 2017
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