The thin yellow "electrical tape" that is wrapped

no info generic answer ---check fan and compressor

If it is a vibrating motor noise, then some oil may help but make sureit doesn't drop into the tank. The little Motors used in these things have a limited lifetime and bearings and corrosion a of insulated iron plates that the copper wire of the motor coils wrap around do tend to corrode and lose their efficiency.

Otherwise, try a bit of foam padding to isolate the tank from the motor assembly - there might be some slight vibration there.

There are two causes of your problems:
1. The fan needs you to manually turn it to start running.
Problem: The motor bearings both ends are dried out.
Solution:
1. Remove the motor/fan from the motor housing (there are two screws that hold the motor to the housing. The only way I know how to get to the screw is to bend one of the fan blade up and use a long screw driver to get to the screws.
2. Remove the two screws that hold the bearings to the motor.
3. Detach the bottom bearing (opposite of the fan end.) You might have to use a flat screw driver to pry the bearing off.
4. Use a Q-tip and soak it with motor oil or grease then lubri- cate the fan end shaft/bearing.
5. Use a Q-tip + alcohol to clean up the bottom bearing hole, then lubricate it with grease or motor oil.
6. Put the motor and bearings back together and make sure that the fan can turn freely now.
7. Install the motor/fan back into it housing.
The fan should turn on its own without you helping it.
If the fan won't turn, you have a bigger problem. See below.

2. The fan won't turn at all and is really tight even when you try to
turn it by hand.
Problem: The transformer coil(s) is/are burnt out. Chances are you let the fan run dry to a point that it squealed and started to smell like it was burning before it quit all together.
Solution 1:
1. Remove the filters and their housing on the bad fan side.
2. Duct tape a piece of plastic over the bad fan opening.
3. Run the humidifier with one fan. It works just as well.

Solution 2:
1. Buy a new humidifier.
2. Make sure you lubricate the bearings as soon as the motor begins to squeal.

Solution 3: You need knowledge of electricity
1. Take the motor/fan out from the housing.
2. Use a vote meter to check the resistance in both coil of the transformer; should read about 17 ohms. The coil(s) that has a high reading or if the meter shows 'OL' is bad. Remove the Yellow tape from the coil to see if you have a loose soldering joint between the coil wiring the electrical cord. If yes, solder the joint back together, check the resistance again to make sure you have about 17 ohms. If the answer is yes, put the yellow tape back on the coil and use electrical tape to secure the tape. Hopefully, the fan should work now. Good luck!

Do you feel like looking at the humidifier yourself?
You can open the door on the unit, while the furnace is running--
The humidifier is usually installed in the return air duct, so there will be a sucking of air into the open door, when you open it.

There is usually a large wheel, with a wet pad wrapped around the circumference.
This wheel rotates slowly, and picks up water from the sump-- does everything look and sound quiet as it runs? -- The float valve has to open and close, to c ontrol the leve of water in the sump-- (The pool of water the wheel runs the mat thru--
Possibly the valve shutting off, could make a plumbing BANG-- you could duplicate that, by lifting the float mechanism and stopping the water-- does that make the noise?

If you can reach and operate the Humidistat control from near the humidifier, do so a few time-- or Have someone cycle the humidistat a few times, and you listen for that sound--
Is it in the humidifier itself, or the duct work nearby?

It might be that the humidistat wheel scrapes against the side of the sheet metal duct work? -- Sounds travel a long ways in metal duct work!

Let us know if this helps

Mack B

The current sensing relay must be attached to the blower motors common wire to work properly, this is usually the white wire coming off the motor.

1. Disconnect the dimplex aircon from the power source.
2. Dismount the motor driving the fan from its mounting.
3. Mark the motor lead wires accordingly.
4. Disassemble the motor, and replace the bearings.
(Take note of the bearing number located at sides)
5. After replacing the bearings, assemble the motor,
and have it remounted in place.
6. Reconnect the wires and palce an electrical tape
at the bare joints.
7. Conduct a test run of the unit..
Hpoe this helps.

It`s pretty expensive but Appliance Factory Parts has the same motor except at 24 volt and you have to use the gear from your old unit and a step down transformer..as yours is 115 volt..

Around $80 as they will combine the shipping if you call them..

Local electric motor shop repaired my 1994 motor for $35 after I explained to them I could not find a replacement..

I talked to Sears repair service man, he said our units are too expensive to produce today but are better than these new high flow models they use allot of water that just goes down your drain..

From The Hunter Manual
1. Turn the humidifier ‘OFF’ and unplug the unit.
2. Lift the main housing and remove the water dispersion tray and the PermaWick™ Filters. The motor is attached to the main housing. Do not place the motor near water. Do not use a wet towel on the motor or motor housing as electrical shock may occur.
3. The PermaWick™ Filter should be cleaned in a vinegar and water solution to remove any mineral buildup. Place in a solution of one (1) gallon of water and eight (8) ounces of undiluted white vinegar. Allow the filter to soak for 20 minutes.
4. After soaking, rinse it several times with clean water. Place the PermaWick™ Filter in a location where it can drip dry while you clean the other parts of your humidifier.
5. Remove the water tank from the base and empty any water that is left in the tank. Soak the base in a mixture of one (1) gallon of water and eight (8) ounces of vinegar for 20 minutes.
6. After soaking, wipe the base with a soft cloth or sponge to remove any mineral build up. Rinse with clean water several times. If you are planning on storing the humidifier, be sure the base is completely dry.
7. Fill the water tank with one (1) gallon of water and eight ounces of undiluted white vinegar. Replace the tank cap and shake the tank vigorously until all interior surfaces of the tank have been exposed to the water/vinegar mixture.
8. Empty the tank of the water/vinegar mixture. Rinse it several times with clean water and then replace the tank cap. If you are planning on storing the humidifier, dry it inside and out, leaving the cap off to allow the tank to completely dry. Continue to clean the other parts of your humidifier.
9. Remove the water diffuser cap by squeezing the two tabs as shown in Figure 3. Rinse the cap in clean water to remove any debris. If the cap contains hard water residue, soak it in a mixture of one (1) quart of water and two (2) ounces of vinegar for 20 minutes.
Rinse well and reinstall the water diffuser cap. Do not expose motor or other electrical components to water.
10. Wipe the surfaces of the main housing with a soft cloth.
11. Once all the parts are clean, reassemble the humidifier, and follow the USING YOUR HUMIDIFIER to continue use. If you are storing the humidifier, make sure the parts are completely dry, reassemble, and store in a dry location

what country are you in... winter time is low humidity to begin with.

Robert

I contacted Lasko and immediately got a response:

You will need to remove the top grill of the humidifier to install the gasket. The gasket installation instructions are as follows.

1. Unplug the humidifier.

1. Remove the top half of the humidifier and turn it upside down onto a stable surface.

***Be sure that the pump housing is dry. If it is not, there is a possibility that water will flow into the motor housing and cause damage to the motor.

1. Locate and remove the six (6) screws that are around the inner edge of the unit.

3 are located near the front and 3 are located near the back.

1. You will now be able to remove the top grill to install the gasket into the U shape part of the housing.

1. Once the gasket is in place, you will then reassemble the top grill to the housing and reinstall the screws.