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We have a Malibu/Intermatic timer on our landscape lights. This is the second one we have had and it is approximately 4 years old--200W. The last 2-3days, the lights come on at the time that is set but only stay on for 15-20 minutes. Before this we had a

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The ground shields are _required_ when connecting submersible underwater lights and 12 volt submersible pumps in water gardens and such.

As a licensed electrician, I must tell you to immediately unplug the power pack (transformer) from the 120 volt outlet and _DO_ NOT use it again until this problem has been solved. This is a definite FIRE HAZARD.
Based on what you stated, I strongly recommend replacing the existing 200 watt power pack with an Intermatic ML300RTW Malibu 300-Watt Power Pack or similar 300 WATT transformer.
ADDITIONALLY, I strongly recommend replacing the _entire_ existing main cable run with Intermatic ML12210 Malibu 100-Foot 12/2-Guage Low Voltage Cable. Make sure to get 12 gauge wire.
There are a few things going on here. First, the transformer is being overloaded. I suspect that you are running pretty close to 200 watts or more. Because the tranformer is overloaded it overheats and the solder in the built-in internal thermal overload melts and disconnects the circuit. When the transformer cools some, the solder in the overload solidifies enough to re-establish the circuit. If this cycle is allowed to continue, either the transformer burns out due to heat or starts a fire.
While these transformers are supposed to operate at full capacity, they will wear out quicker when operated in such a manner. For best results, don't operate the transformer at over 80%. For a 200 watt transformer that would be 160 watts ( 200 watts x .80 = 160 watts).
Secondly, I also suspect that the cable has been damaged, possibly when the siding was installed, and there is a short in the cable, which in turn is overloading the transformer. It's also possible that the end of the cable is shorting out.
In this case the only safe solution is to replace the cable. Even if you decide to keep the existing transformer and reduce the total wattage by using smaller watt bulbs or removing some lights, I still highly recommend replacing the cable.
Sorry to be so harsh about this, but this is a _serious_ matter. You've already had a fire in the mulch and melted the vinyl siding. If you don't feel comfortable dealing with this matter, please call a _qualified_ electrician.


Posted on Aug 30, 2010

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My outdoor low voltage lighting is blinking on/off - cycles on/off every 2 seconds (approximately) - this is not an issue of the photo sensor picking up light from the installed lights. Colder than us


1) Most photocell timers have 1 year limited warranty, but unclear who carries warranty without knowing brand.
Do not buy expensive timers with photoeye unless purchased at local store where ez exchange can be made for several years.
Copy following link to help identify timer:
http://waterheatertimer.org/Woods-timers-and-manuals.html#Moonray

2) Buy Intermatic-Malibu power pack with 5 year limited warranty:
http://waterheatertimer.org/Malibu-power-pack-stopped-working.html

3) Set power pack to ON position (or override position) and then plug power pack into cheap 3-prong wall timer, for example timer with optional dawn-dusk or remote control sold at Lowes and Home Depot.
http://waterheatertimer.org/pdf/Woods-49554-TM16-manual.pdf

4) Add comment and describe timer in detail for more possible help

Dec 27, 2012 | Yamaha Xv 250 Virago S Motorcycles

1 Answer

I bought a Malibu 300W low voltage landscape transformer to replace a 200W unit that stopped working. It worked for 1 week, then stopped .. the reset **** doen't work. The LED works, I do see a...


I don't know if it burned out, but something is not right.
Malibu products come with 1-5 year warranty.
New product that stopped working should be exchanged for full replacement at place of purchase, except possibly the auction sites.
New Malibu product should work for many years.
Be sure to match bulb voltage with transformer voltage to avoid possible problems.
Mismatched bulb and transformer wattage should not affect a timer in short period such as 1 week.
Another thing to check is outlet polarity. Use circuit analyzer from home center to check outlet.
http://waterheatertimer.org/Malibu-power-pack-stopped-working.html

Jul 20, 2011 | Intermatic Malibu 300W Power Pack...

1 Answer

I installed a new Intermatic 200w powerpack with 15 malibu lights using 131 watts. The lights turn on manually, but the timer doesn't work. How is this possible.


More information is needed.

Open following link for Intermatic-Malibu resources:
http://waterheatertimer.org/Malibu-power-pack-stopped-working.html

You say clock doesn't work.
Add a comment with following information:
Do you have timer with analog dial?
Does dial rotate as time passes?
Does dial keep good time?
Have you put the black and red trippers in place?
Are trippers push all the way down?
Have you set current time by rotating clock dial 2 full turns before rotating dial to current time?

Intermatic/Malibu ML series timers come with 5-year warranty.
Product is covered by warranty.

Upvote the help.
And take advantage of fixya expert assistance live.
For a price, expert works with you while you work on timer or any do-it-yourself project.
Fixya is always less expensive than a service call.

Jun 01, 2011 | Malibu ML200RT - Low Voltage Power Pack...

1 Answer

I have an Intermatic ML200RT outdoor timer. The timer moves correctly but the lights do not come on. It is less than one year old. Can it be replaced free of charge? It says it has a 5 year limited...


ML series power packs from Intermatic/Malibu have 5 year limited warranty.
Open following link for power pack troubleshoot checklist and power pack resources.
Intermatic links do not work on weekends, April 2011
http://waterheatertimer.org/Malibu-power-pack-stopped-working.html

Add a comment for more free help

Also take advantage of fixya expert assistance live.
For a price, expert works with you while you work on timer or any do-it-yourself project.
Fixya is always less expensive than a service call.

Apr 28, 2011 | Intermatic & Indoor/Outdoor Rain Tight...

1 Answer

Timer turns lights on for 2 seconds then shuts off ?????


Timer is malfunctioning, or trippers are worn down and don't fully push the switch over.
See it timer operates on manual override.
Buy new trippers, and/or buy cheap plug-in timer, and then set power pack to override, and plug power pack into cheap timer.

Power Pack uses 107SB189 ON tripper, and 107SB192 OFF tripper

For information on Intermatic/Malibu power packs showing troubleshoot steps, replacement trippers, links to manuals, useful links, warranties and tips:
http://waterheatertimer.org/Malibu-power-pack-stopped-working.html

Add a comment with your experience so others with same-similar problem can benefit.

Also take advantage of fixya expert assistance live.
For a price, expert works with you while you work on timer or any do-it-yourself project.
Fixya is always less expensive than a service call.

Apr 10, 2011 | Intermatic 200W Power Pack & 12v...

1 Answer

Timer on my 200W transformer is working but lights will not turn on manually or by timer. when i turn on with manual switch they flash on for a second then turn off. i am just under 200W for total...


You posted under Intermatic-malibu power packs.
Wattage of bulbs must match wattage of power pack or bulbs and power pack will burn out.

Your power pack might be damaged beyond repair.

For information on Intermatic/Malibu power packs showing troubleshoot steps, replacement trippers, useful links, warranties and tips:
http://waterheatertimer.org/Malibu-power-pack-stopped-working.html

Aug 23, 2010 | Malibu ML200RT - Low Voltage Power Pack...

1 Answer

Lights will turn on and off manually only


Just checking, still plugged in, fuse or circuit breaker not tripped that provides power to it? If you can turn it manually, and the dial does not turn when powered up, look for a small on/off switch, other than that, maybe it does need replacement, but they usually last longer that a year, but I have had some timers that just quit working on me too.

Apr 29, 2010 | Intermatic Malibu 300W Power Pack...

1 Answer

Malibu TDC PTST-30012 turns on in the middle of the day


1) Contact malibu lights directly.
Their site does not acknowledge TDC PTST-30012, so I cannot access a manual with best information.
Their products come with a warranty.
http://malibulights.com/customer_service/contact_us.aspx
http://malibulights.com/customer_service/owners_manuals.aspx

2) If unit can be set to override, you can buy cheap photo eye timer, and then plug power pack into cheap timer, but there is no guarantee this will work, or that power pack will burn out.
http://www.amazon.com/Intermatic-HB61RC-Digital-Outdoor-Control/dp/B00004W4X5

3) Buy ordinary power pack with dial-type timer, and then buy photo eye that fits.
http://www.intermatic.com/products/professional%20lighting/light%20expressions/accessories/ml814drp.aspx

http://store.nexternal.com/intermatic/categories.aspx?Keyword=ML814DRP&x=15&y=10

4) As electrician, I would not buy anything that costs more than $15 that comes with built-in photo eye that cannot be replaced.
Especially something as buggy as a low voltage power pack.
http://waterheatertimer.org/Malibu-power-pack-stopped-working.html

Feb 14, 2010 | Intermatic Malibu 300W Power Pack...

1 Answer

Malibu ML200RT low voltage power pack is not working


First check to make sure that you do not have more watts pulling than is recommended. If this is ok then pull both the red and black plastic pin from the timer and replace them then try. If neither of these solutions work you may have a problem at power source.

May 09, 2009 | Malibu ML200RT - Low Voltage Power Pack...

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