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Transformer working but no power in unit - Heating & Cooling

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Hello. what exactly do you mean by no pwr in unit, where in unit? at supply wires? If not, Problem exists in wiring circuit to unit. check that first. At power switch feed? if so, check switch outlet (or board at some terminal point) for power. Post results of those tests ok.

Posted on Oct 20, 2013

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POWER VOLTAGE


No. To work with 220V~240v; the device need a step down transformer to be connected in between line and device. The transformer [voltage converter] should be used, otherwise; the unit will get damaged. The step down transformer adaptors can be bought locally. http://electronicshelponline.blogspot.com/

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Malibu transformer 120w 1-8100-9120-01 transformer has no power and LCD is dark. Power plug was verified to be working. Unit is new, installed, configured and came back to see if lights came on during...


I don't have repair for defect timer, except return to Home Depot and exchange for another.
Try unplugging timer to see if will reset. There is no specific reset button on timer.
Test outlet with circuit analyzer to confirm there are no electrical problems.

The label shows advisories: Don't use extension cord, unplug unit when working on bulbs, and plug unit into GFCI protected outlet to protect from surge and short.

Other advisories not shown: Unplug power pack if breaker trips or if power goes out. Wait until power is on before plugging back in. First bulb should be 10 feet from unit. Do not wrap extra cord around power pack. Match bulb wattage and power pack wattage: 200 watt power pack should have 200 watts and not more or less. Replace bulbs as soon as they burn out.
These advisories should not affect initial operation of timer, but are things that shorten life of power packs,

Open following links for resources:
http://waterheatertimer.org/images/Malibu-8100-9045-01-large.jpg
http://waterheatertimer.org/Malibu-power-pack-stopped-working.html#dawn-dusk

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Transformer is not providing power to timer unit, power bulb is indictaing off power on screen. Have completly powered down and powered up. Model - pocket star 4 zone Thanks Dan...


The transformer is seams to be working, the power bulb indicator working tells me that the transformer is ok. You may need to check the circuit
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My Bosch double oven timer is not working. No clock, notimer, but the oven is working fine.


Sure this is the failure off the unit but make sure that the step down transformer for the power to the unit is faulty or burnt. If so replace the transformer. If power goes tto unit without display then the processor can be faulty . Change the clock timer. unit if you need the timings.

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You can buy cheap plug-in timer, set power pack to override, and plug power pack into cheap timer.

I wrote power pack troubleshoot checklist:
http://www.fixya.com/support/r8391011-power_pack_not_working

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1 Answer

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You need to disconnect the lighting load completely from the transformer and check it's output. If it is dead unloaded, replace the transformer. If it seems to work now, then some part of the lighting circuit has probably shorted out. If there are several circuits coming to the transformer, attach each one separately and recheck for power. When one is attached that kills the output, investigate that circuit. Check for any broken lamps first, then the wiring must be opened at each lamp location to check for a local short circuit. A somewhat tedious fix. Hope this helps!

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1 Answer

Gears stripped. can I buy the timer unit


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.
With receipt, power pack might still be under warranty.
Open following link for power pack tips and resources:
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1 Answer

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I had the same thing happen on my original Roady2. I suspect the powerplug port on the Roady2 unit is not getting a good connection. Does the transformer plug have a plastic tip? You can try to cut that off with a sharp razor blade. Sometimes that will make a good tight connection. What I did was buy a used Roady2 unit on ebay. Also another cause is


the power connection is not being made by an internal problem or wear caused by constantly plugging and unplugging the power port. I use a Cambridge XM playdock boombox at home. I bet getting a different unit will solve the problem. The only problem is that finding a used unit might take some work. Good Luck

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1 Answer

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I assume the transformer has 2 wires coming out of it. My guess is that the wire from the transformer is working however the wire leading from the Transformer to the printer is not.

You may need to purchase another power unit.
But on the bright side, a transformer is cheaper than a new printer.
:)

Hope this helps.

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1 Answer

Unit won't power up completely


The clicks you hear are the relay that completes the circuit for 110V AC to the main power transformer. Mine had the same problem and here's how I've gotten it to work. A lightning strike near our house caused it to fail, and I traced it to the power transformer relay activation circuit. The tuner and amp were fine. I found a bad transistor in the relay circuit, but didn't have a replacement on hand, so I soldered a jumper wire across the relay switch connections on the power transformer circuit board. This connects the 110V AC directly to the power transformer. DC Power to the amp and tuner circuits will still be controlled by the power switch, but the transformer will be supplying all the AC voltages to the main board. If there is a real problem with the circuits that load the transformer or the transformer itself, then the fuse will blow. If the fuse doesn't blow then I suspect the problem is just in the power sequencing circuit itself, that is not needed for operation other than to make the unit "Energy Star Compliant". A lot of electronic items have a transformer that is not switched, and only fused, so that the supplies are available at all times.

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