Question about Malibu Intermatic Inc. ML121RT Low Voltage 121-Watt Power Pack with Timer

Open Question

Can I use Model 8401-9513-01 Malibur LED lights with ML121RT powerpack?

I have two different transformers and want to replace the lighting from halogen to LED. I have purchased Model 8401-9613-01 lighting (4). Can I put 2 each on 2 different transformers, models ML121RT & ML88L model DA 88?

Posted by Anonymous on

Ad

6 Suggested Answers

6ya6ya

6ya staff

  • 2 Answers

SOURCE:

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

Ad

Anonymous

  • 2 Answers

SOURCE: Malibu Light Transformer ML121RT troubleshooting

1) Disconnect the plug.
2) Remove the 3 hex screws holding the cover.
3) Make a note of all connections (taking a picture is even better).
4) Connect the black power wire to the red transformer wire.
5) Connect the white power wire to the white transformer wire.
6) Set your voltmeter to 20 or 50 volts AC (not DC and not less than 15 volts).
7) Plug the transformer in the wall.
8) Test the voltage coming from the A & B connectors at the back (polarity is irrelevant).
If you see 12 volts or thereabout, the problem is with the little switch (the one with the black and red wires that is activated by the trippers on the clock dial). I have the exact same problem but I have been unable to locate the part so I am going to try to clean the contact points and see if that works.

Posted on Aug 09, 2009

Ad

Anonymous

  • 10 Answers

SOURCE: Power at 3 feet, not at 2 feet ???

You might need to check the power source for proper voltage, sometimes outdoor wiring is at the mercy of the elements. Rusty screws on recepticles and so forth. Another problem could be exposed wire in the line bleeding of to ground. Sometimes this happens if a fixture is removed and the wire not properly protected. If these are none of your problems just take up your fixtures and replace the wire. 16 guage underground feed will probably be less expensive than the transformer you bought.

Posted on Dec 22, 2009

Fred Yearian

  • 5603 Answers

SOURCE: Wiring diagram for the ML121RT?

You connect the lights to the A and B terminal.

The C terminal is used for an optional photo control.

Posted on Jan 20, 2010

Anonymous

SOURCE: Timer model PB912M10 does not

I answer questions for free.
I specialize in timers and electrical devices.
I hesitate to answer about Malibu power packs because there are no parts or repairs for a power pack, and the owners of this product are angry that such an expensive item is unrepairable and then they downvote a truthful answer that is provided for free.

Here's what I've done for fixya customers.
For hours, I searched Intermatic Timers, Malibulights.com, and the web looking for parts and solutions for the Malibu power pack. There are no parts or solutions.

I purchased a power pack from Home Depot and examined it and then read the manual from head to toe.

The answer is this: if the power pack is not working for any reason and the receptacle has power, then the power pack is busted and you need another one.

However I can save you money on your next power pack, and that may be worth your trouble coming to fixya:
Your next power pack:
1) Match up wattage of bulbs with wattage of power pack.
15 each - 20 watt bulbs = 300 watts = 300 watt power pack ... if you buy the 500 watt power pack for 300Watts of bulbs, then it will burn up the bulbs and the power pack.
2) Replace bulbs as soon as they burn out or other bulbs will burn out and the power pack will burn out
3) When working on bulbs, unplug power pack or the power pack may burn out
4) Use the link below to help plan your low-voltage lighting
http://www.malibulights.com/guides_support/low_voltage_planning_guide/select_your_power_pack

Purchase a power pack:
Home depot sells Malibu power packs.
Lowes sells a Low-voltage power pack similar to Malibu

Posted on Nov 07, 2010

Anonymous

SOURCE: i have the ml121rt transformer. the lights work

Power pack is getting electricity.
Connections are good where lights tie into wire.

My power pack was doing same thing.
I tried everything from spraying WD40 to trying to taking it apart.
Power pack doesn't come apart.
I turned it upside down thinking water or dirt got into timer.
I took it inside and let it warm up.
It still wouldn't work.
Then I searched Intermatic and Malibulights.com for answer, but they have no troubleshooting or repair.
Conclusion: when power pack doesn't work, it is broken.

I found tips to preserve power packs, but over the years I pretty much followed these steps and power pack still failed.
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.
http://www.malibulights.com/guides_support/low_voltage_planning_guide/select_your_power_pack

Posted on Nov 19, 2010

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

One terminal for wire attachment on transformer appears burnt. Fixable or replace?


Something happened to the unit.
Good news is that lights are still ON.
Might be power surge. Or extra wire wrapped around transformer.
Clean up terminal with sandpaper.
If clock motor does not rotate, but lights are ON, then plug power pack into cheap wall timer.
Copy following link and read tips for getting power pack to last longer. One of these reasons may apply to problem.
Plus view warranty, and replacement trippers.
http://waterheatertimer.org/Malibu-power-pack-stopped-working.html

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

Nov 04, 2012 | Intermatic Malibu 121W Power Pack...

1 Answer

I have a ML121RT Low Voltage 121-Watt Power Pack with Timer hooked up with three 20 watt lights attached - going north. I want to add one more 20w llight going south. Can I attach an additional wire to...


Try it... should work
http://waterheatertimer.org/Malibu-power-pack-stopped-working.html#install
However minimum load for ML121 is 80% load rating.. so 80 watts is ok for 100 watt transformer... 60 watts is low and can cause early failure of transformer.
Gene

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

Jul 14, 2011 | Malibu Intermatic Inc. ML121RT Low...

1 Answer

Where is the reset breaker located on the ml121rt? Lights have been tested and work with an alternate transformer but noting using terminals a & b on the ml121rt.


ML121 does not have reset.
If transformer does not produce 12 volts across terminals A and B, then power pack has gone bad.

If override still works, then might be easiest to buy cheap plug-in timer, set power pack to override, and then plug power pack into cheap timer.

With receipt, power pack might still be under warranty.

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

Jun 05, 2010 | Intermatic Malibu 121W Power Pack...

2 Answers

Malibu Light Transformer ML121RT troubleshooting


1) Disconnect the plug.
2) Remove the 3 hex screws holding the cover.
3) Make a note of all connections (taking a picture is even better).
4) Connect the black power wire to the red transformer wire.
5) Connect the white power wire to the white transformer wire.
6) Set your voltmeter to 20 or 50 volts AC (not DC and not less than 15 volts).
7) Plug the transformer in the wall.
8) Test the voltage coming from the A & B connectors at the back (polarity is irrelevant).
If you see 12 volts or thereabout, the problem is with the little switch (the one with the black and red wires that is activated by the trippers on the clock dial). I have the exact same problem but I have been unable to locate the part so I am going to try to clean the contact points and see if that works.

Jun 22, 2009 | Malibu Intermatic Inc. ML121RT Low...

1 Answer

I have a malibu ML121RT timer that just stopped working. Outlet works, new lightbulbs, didn't nick power cords to outdoor lights. What could be the problem?


The PB912M10 timer clock motor is not sold separately. Aug 2010.
If power pack transformer still works: buy cheap plug-in timer, set power pack to override, and plug power pack into cheap timer.
If transformer no longer works, then it is not repairable.
With receipt, power pack might still be under warranty.
Open following link for power pack tips and resources:
http://waterheatertimer.org/Malibu-power-pack-stopped-working.html

Jun 16, 2009 | Intermatic Malibu 121W Power Pack...

2 Answers

Malibu transformer shuts down early


Well, you're overloading the transformer by 30 watts. It's doing what it's supposed to do when overloaded...shut down. It's the _other_ (works fine) transformer that you should worry about possibly starting a fire, since it's not shutting down when overloaded.

Mar 09, 2009 | Intermatic Malibu 121W Power Pack...

1 Answer

Compaq Presario R3000


If you are getting no lights at all on the laptop, you need to check the "powerline" - everything between the outlet and the back of the laptop.

Start by removing the battery. Then, check to see if the power pack has an ON light, if it does, make sure it is on, if it has a light and it is off, try plugging the power pack into a different outlet you know works. If it is still off, you have a bad powerpack and needs replacing. If the powerpack does not have a light, you need to find a geek friend with a multimeter (or get one at WalMart for $4), and check the powerpack's output in volts matches whatever it says on the side of the pack. If the voltages do not match up (generally) you have a bad powerpack. If you are getting normal voltage from the powerpack but the laptop is not getting any power, you have a different set of problems. Is the laptop beeping when you try to turn it on? Do you get any activity at all?

Good luck...

Nov 17, 2007 | Compaq Presario R3000 Notebook

Not finding what you are looking for?
Malibu Intermatic Inc. ML121RT  Low Voltage 121-Watt Power Pack with Timer Logo

Related Topics:

93 people viewed this question

Ask a Question

Usually answered in minutes!

Top Malibu Hardware & Accessories Experts

Gene Haynes

Level 3 Expert

5390 Answers

jdthefixer

Level 3 Expert

746 Answers

john h

Level 3 Expert

22486 Answers

Are you a Malibu Hardware and Accessory Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...