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Landscape lighting transformer hums only when controlled thru photo-cell, and not when powered directly.

I have a transformer for low voltage garden lights; this weekend I added a photo cell to the supply side, and removed the transformer timer keys to provide dusk to dawn function; however this is causing a very loud hum in the transformer - any thoughts?

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1) Copy following link for Intermatic/Malibu power pack photo-eye instructions, general troubleshoot, manuals, replacement trippers, and tips to prolong life of power pack:
http://waterheatertimer.org/Malibu-power-pack-stopped-working.html

2) Brand and model of transformer and photo eye are unknown.
Wiring changes are unknown.
Volt rating of photo eye is unknown.
Wiring of photo eye is unknown.

3) Add a comment including details, and attach photo, after reading information on link above, for live response Jan 2013

Posted on Jan 02, 2013

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SOURCE: I have a Hampton Bay 300W power supply for outdoor landscape.

"The wire with a light" is a not light bulb. That is your photocell. At dark will turn your system on if you select thta feature.

I have tha same power supply. In my case "check circuit" light is on. I need a manual so I can troubleshoot. Any Ideas?

Posted on Aug 04, 2010

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1 Answer

We have a Malibu 300 low wattage transformer for 13- 20 watt landscape lights.


Try connecting a lamp (correct voltage, etc) directly to the transformer. Most likely, the wire from the transformer to your lights is broken... The reset button can't reset anything, if there's nothing wrong there.

Jun 16, 2016 | Intermatic Malibu 300W Power Pack...

1 Answer

Where can I buy a replacement photocell for my Malibu 300W low voltage landscape lighting transformer?


You can buy the Malibu Photocell Low Voltage sensor on eBay. Go to eBay and search "Malibu Photocell Sensor" and you should see it. Or search eBay item number 371829265599

Mar 26, 2016 | Intermatic Malibu 300W Power Pack...

1 Answer

How do you program a da-150-12w-1?


150 Watt Transformer TDC Power DA-150-12W-1 - eBay

www.ebay.com > ... > Outdoor Lighting > Walkway & Path Lights

eBay150 Watt Transformer TDC Power DA-150-12W-1 in Home & Garden, Yard, Garden & Outdoor Living, Outdoor Lighting, Walkway & Path Lights ' eBay.

New Free SHIP TDC Power Da 150 12W 1 Low ... - eBay

www.ebay.com > ... > Outdoor Lighting > Other Outdoor Lighting

eBayNew, Free Ship, TDC Power DA-150-12W-1 Low Voltage Transformer, 12v 150watt Max in Home & Garden, Yard, Garden & Outdoor Living, Outdoor Lighting ...

[PDF]SECTION H - Etlin

www.etlin.com/pdfs/Outdoor_Transformers.pdf
1-800-661-9610 (Canada) 1-888-762-5384 (USA). OUTDOOR LOW ... DA-XX-12WSeries - 60 to 150VA Small Case Low Voltage Outdoor Transformers.

Da-150-12w-1 Manual ' downloadthingsfast.com


Dec 09, 2015 | Malibu Hardware & Accessories

1 Answer

Loud huming from my 300v low voltage lighting transformer


Transformers make humming sound.
ML300 series transformers make sound.
Used styrafoam to separate transformer from contact with building so sound is not carried.
These transformers have 10 year limited warranty.

Copy following link for general troubleshoot and tips, and warranty information, and trippers.
http://waterheatertimer.org/Malibu-power-pack-stopped-working.html

Oct 23, 2012 | Malibu ML300RTW - Low Voltage Power Pack...

1 Answer

Resetting a tripped kitchler low voltage transformer


Model number is not known.
I did not know that Kitchler transformers have a circuit breaker.
Usually they have an override switch.
Did you set the timer to override, what does your product manual say?
Is the transformer humming? Kitchler transformer are supposedly non-audible, but there should be some indicating sound. The humming sound indicates the transformer is working.
Does the unit have photoeye? Cover photoeye with black tape.
Test outlet with circuit analyzer.
Check outlet voltage: if you have 120Volt then output is 10% or 12Volts. If you have reduced voltage, then output is still 10% but might be lower than needed to operate bulbs.
Plug timer into different outlet.
Test output terminals with low voltage tester.
Did you have power outage or nearby lightning strike? Transformers are not protected from surge.
Suggest you contact kitchler.
Kitchler.com website is useless
888-412-4877
7711 E Pleasant Valley Rd
PO Box 318010
Cleveland, OH 44131
Kitchler products are probably warranted through the seller.
Kitchler product manuals are almost non-existent.
Scan your product operating manual and parts list into .pdf format and post on web for others to access.

Aug 09, 2012 | Hardware & Accessories

1 Answer

I have some outdoor landscape lights that were working fine until a few days ago. The 120 vac power goes into the first transformer, and then out, and into a second, then a third, then a fourth, and...


Hi, to isolate the faulty transformer, one need to obtain a Multimeter and set it to Volts AC, then going to the Output of each transformer & see if there is the required 12V there. The one that's NOT providing an output is the faulty one.
In these setups you are correct there is little else it can be. However check at the connections to the lights also, see if there is Voltage there too.
A transformer will have the 120 V AC on the Primary, INPUT side, and 12 V AC on the Secondary OUTPUT side.
Try testing right on the transformers terminals. Also remove the "Load" too when making measurements as if there is a short etc, then that may give a false reading. Always measure Voltages first with NO load, then test again with the Load, they should both be the same, if NOT then you have a fault NOT in the transformer but elsewhere in the circuit.

Sep 26, 2010 | Garden

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

Electric gemini range has a low hum to it.


could be your low voltage transformer that powers your control board

Nov 03, 2009 | Maytag MER6772 Gemini Electric Kitchen...

1 Answer

Garden landscape lights not working


Is the timing wheel moving? It sounds like the low voltage side of the transformer is out. Have you tried turning the 'manual' switch on? If you unplug the box and take the bottom off, there may be a fuse, it might be worth a look. other wise you will need a new transformer box. Which one you say, Add up the lights, figure 18 watts per and do the math. (10 lights @ 18 watts ea =180 watts.) You would get at least a 200 watt transformer.

Jul 25, 2009 | Garden

1 Answer

Malibu landscape lighting transformer problem


Testing ohms across A and B will read open circuit through transformer coil.
Testing DC voltage across terminals A and B should read 12 volts DC, and nothing less.
Transformer should make humming sound when working.
Test that receptacle has power and breaker is not tripped.

There are no repair parts for power packs, but they come with 5 year limited warranty.

For more 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

May 30, 2009 | Intermatic Malibu 300W Power Pack...

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