Washer ON and OFF continuously

hi Peggy.
Main reasons a washer will not start (either front or top load):
1. Power breaker off, washer not plugged in.
2. Lid switch faulty, door switch faulty.
3. Start switch and or timer faulty.
4. Washer motor faulty.
5. Main control board faulty or shorted.
Power to Washer
Be sure the washer is plugged into the electrical outlet in the wall. Also be sure the breaker switch in the breaker box is turned on. If you live in an older home your box may be called a fuse box. If so, make sure the fuse is in good working condition.
Door Switch Strike (Front Load Washer)
The door switch is a safety feature on front loading washing machines. On front loaders, the door switch must be closed and the door must be locked. If this switch malfunctions, the washer won't start. This switch is in the door frame of the washing machine where the door shuts. If you suspect the door switch is causing your washer to not start, carefully check the strike where it engages into the door lock assembly. Be sure the lock is working properly by keeping the door shut and locked shut. You can check the door switch for continuity with a multimeter. Be sure to disconnect the power to the washer when you check for continuity. If there is no continuity, replace the door switch.
Lid Switch (Top Load Washer)
A lid switch is a safety device located under the lid on top load washers. This lid switch will not let the motor operate when the the lid is open. If the lid switch is faulty, then the washing machine will not start. It may fill with water but will not spin if the switch is faulty. Some lid switches on top loaders also control the water inlet valve. In some top load washers, if the lid switch is bad, the washer will not fill with water. The lid switch is under the lid. There is a pin or pusher attached to the lid. This pin or pusher (when lid is closed) will press the lid switch. If your washer will not start, be sure the switch is being pressed. If the lid switch is being pressed but no power is being supplied to the washers motor, then the switch is most likely bad. To test the switch, turn off power to washer and remove the wires from the lid switch. Check the switch for continuity with a multimeter. If there is no continuity, replace the lid switch.
Start Switch and Timer (Top Load Washer)
The start switch timer on top load washers is part of the timer. This starting switch is turned on by pulling out the timer knob. If after pulling the timer knob the washer will not start, you can test it for continuity with a multimeter. Remove power from the washing machine and find the timer contacts. Some top loaders have a start switch that is a momentary contact type of switch. This switch will be located on the control panel. You can also test this switch for continuity with a multimeter while pushing the button in. Remove power from the washer before testing for continuity. If there is no continuity, replace the start switch and or timer.
Timer Knobs
Sometimes the timer knob wears out and cannot properly engage the timer shaft. If this is the case, then the knob is at fault. The knob cannot grip the shaft therefore is unable to turn the machine on. A worn knob will cause it to slip. Turn off power to the washer and inspect the back of the timer. Make sure the timer shaft engages the knob when it is pulled in or pushed out. If the knob is worn, replace it with a new one.
Drive Motor
Both top and front load washers use a motor that spins and agitates. (A top load washer uses a reversing motor) The motor spins in one direction to agitate and the other direction to spin. When the wash motor will not turn on it may be faulty. If the motor makes strange humming sounds then the motor may be at fault. To test the motor, remove the belts and try to start the motor. If it runs then you know something else in the washer is causing the issue. On newer direct drive washers, you will have to disconnect the pump and the coupling to the trans. If the direct drive motor turns on, then then you have a transmission issue or possibly the pump. If the direct drive motor won't start then it should be replaced. On front load washers the motor drives the washing basket with a ribbed belt. Remove the belt and try to start the motor. If the motor runs, then be sure the basket turns and doesn't have anything stuck or jammed between it and the outer tub basket.
Main Electric Control Board
The control board controls every component in your washer. If the main control board does not properly control the motor, the filling valve, the drain motor, or the door lock, the washer will not start. The only way to determine if the control board is at fault is to visually inspect it. Check for burned areas or any component on the board that may look burned or damaged. If you find burned areas or components on the control board, remove and replace it.
or read up more at this link.
samsung washing machine will not turn on Google Search

No agitation or spin? try these:
Motor Coupling If the washer won't spin or agitate the motor coupling might have failed. The motor coupling connects the motor to the washer transmission. It is designed to fail if the washer is overloaded in order to protect both the motor and
Drive Belt If the washer won't spin or agitate, check the drive belt. If the belt is broken or if it isn't tight on the pulleys the washer won't spin or agitate properly.
Drive Motor If the washer won't spin or agitate the drive motor might be defective. This is not common. Check all of the other related parts to this symptom before replacing the motor. If the motor is visibly burned out or physically damaged, replace it.

Stator Assembly If the washer won't spin or agitate the stator assembly might be burned out. The stator is essentially one half of a motor, it interacts with the tub by creating a strong electro-magnet. If the stator burns out the washer won't spin or agitate. Check the stator for continuity. This part is often misdiagnosed.

Transmission or clutch assembly not engaging due to going out or slipping.


Door or Lid Latch Assembly If the washer won't spin or agitate the lid switch assembly might be defective. This is a very common problem. The lid switch assembly can fail either mechanically or electrically. Test any electrical switches with an Ohm meter for continuity. The switches should have continuity according to their design.

Door Lock Motor and Switch Assembly If the washer won't spin or agitate the door lock assembly should be checked. The door lock can fail either mechanically or electrically. Test any switches on the door lock with an Ohm meter. The switches should have continuity according to their design.

Motor Control Board If the washer won't spin or agitate the motor control board might be defective. The motor control board provides power to the motor as well as direction and force. If the motor control board is defective the washer may not work at all or function properly.

There is a water fill sensor issue - 1. Is the water level above 4.5 inches? Yes, go to step (2). No, go to step (4). 2. Does the water enter the washer continuously? Yes, go to step (3). No, replace the Main Control Board. 3. Remove power from the washer. Does the water stop coming in? No, replace water valve assembly. Yes, check wiring to valve assembly for shorts. If wiring is good, replace the Main Control Board. 4. Replace the pressure sensor switch. Did this correct the problem? Yes, problem solved. No, replace the Main Control Board.

It's the main control board that needs replacing. Here is a link to the part.

http://www.applianceblog.com/mainforums/frigidaire-electrolux/25178-fixed-gltf2940-washer-wont-spin.html this seems to be a common issue, here's the fix

frigidaire has problems with their computer boards and it sounds like this is your problem,i've seen them shut down and then after a while start beeping on it's own just like your machine is doing and it was the board part 137006000

Replacement parts for FRIGIDAIRE GLTF2940ES3 Frigidaire/washer ' AppliancePartsPros.com
Go here, see what parts you need and check the prices, the main control board is $173 or so.
Gary

Hi, check the following trouble spots below. you will find the issue in one or, all the areas stated.


1. No power to the washer
Make sure there's power getting to the washer. Check for a tripped circuit breaker or a blown fuse. Check the wall socket for power. Sometimes the power cord disconnects at the washer, if this is the case, the wiring must be repaired or replaced.

2. Lid switch/door latch
The washing machine may not function if the lid switch or door latch mechanism is defective. The switch is usually located near the door. Replace if found defective.


**If you are getting power to the washer and, step 1 and 2 check out ok, replace the timer control or control Board and start switch as well.(You can test the continuity or, resistance level of the Lid/door switch with a multimeter(ohm).