I have an older kenmore dishwasher. I press ''normal cycle'' and then ''start'' and the washing light goes on and the water fills but nothing else. No spinning, no water heating. Help?

try changing the power supply built-in the board.

You may want to try:
Press a series of four buttons in quick succession. Press "Heated Dry," "Normal Wash," "Heated Dry" and "Normal Wash" to instruct your Kenmore dishwasher to run a short diagnostic test.
Wait for two minutes while your Kenmore dishwasher runs its diagnostic test.
Press the "Cancel/Drain" button once your dishwasher has completed its diagnostic test. This should reset your dishwasher control panel.
Check to make sure that there's no standing water in the bottom of your dishwasher. Standing water in your dishwasher may indicate that your dishwasher has stopped mid-cycle. You will need to press the "Cancel/Drain" button before you can reset your dishwasher control panel.

The blinking "clean light" is a common problem with some of the Kenmore and Whirlpool models dishwashers.
The problem is usually attributed to water supply temperatures being too low when filling.

Apparently, there are some issues with the temperature sensing circuits in some dishwashers that causes an error code to be generated if a certain water temperature is not achieved in a specified time interval (this time may differ between models).
There is a reset sequence that you can try to clear the fault.
Push the NORMAL WASH then HEATED DRY buttons in that sequence two to three times.
The unit will enter diagnostics mode, but can be stopped by pressing the CANCEL button.
This will clear any existing faults and should return the dishwasher to normal operation.

To keep the fault from returning, it is recommended that you run your hot water faucet in the kitchen until it runs hot BEFORE you start the dishwasher.
This will heat the water in the supply line for the dishwasher (most dishwashers are fed from the kitchen sink supply line).

The theory is that if you fill the dishwasher with hot water from the start of the wash cycle instead of the cool water that is normally in the lines (especially if you have a hot water tank located far away from the kitchen), this should satisfy the requirements of the temperature sensing circuits.
If the fault reappears, there should be a tech sheet located inside the lower panel under the door that explains what the fault is.
The flashing light will be a series of flashes, followed by a pause.
If you indeed have a component problem, it will depend on the number of flashing lights in the sequence.
Refer to the tech sheet to determine WHAT component is affected and how to troubleshoot.

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I suspect for either of these units that the timer control boards are bad.

That means the control sensed that the heater in the d/w did not operate 3 times in a row. so the unit locks out. First remove the kick plate and you may have to pull the unit out from under the cab, but check your heater. use a meter to see if it reads open, if so order a heater assy it will come with a new control replace it to. If your heater checks good press in sequence normal wash , heat dry ,normal wash,heat dry , normal wash , heat dry three times within 6 sec all the lights will come on then hit cancel. What that did is reset the control and clear that fault. Keep in mind that d/w does not heat it's own water your incoming water temp should be 120. the d/w will maintain that temp. when starting your d/w first turn on your hot water till it gets hot then start your d/w this insures your unit fills with hot water and not cold

there is no real way of checking the keypad. Not with a meter but if you push normal wash for example and it does not respond this usually means that you have a bad keypad

I just read this for the same problem: push sanitize, then heat and dry, sanitize, heat and dry, sanitize, heat and dry, cancel, then open and close the door. It worked. The dishwasher is running correctly even as I type this. 

press back and forth between hi-tempwash and sani rinse several times to get all lights to come on if not then press sani rinse and heated dry back and forth several times. one of though combos will start the test mode. the test mode will stop the light from blinking and you can use the dishwasher again

Puppa, clear the fault by pressing the keys in this order: high temp scrb--air dry--high temp scrub--air dry. Or, depending on your model..Sani rinse--air dry--sani rinse--air dry. The dishwasher will enter the service mode. Let it do it's thing or advance it through it by pressing the start key. The fault came from the board not sensing a rise in the water temp. Make sure to run the hot water before starting the dishwasher. The heating element runs through the nuetral side of the door switch so make sure the d/w is level and the door switches are all making. The element itself could be at fault. Catriver...post back

My dishwasher Model is 665 15891790 and the serie #FG3907905. After programing my dishwasher and pressing the start button, it fills with water, but when it is due to start the sensing light comes on. I have notice that the ring under the watering arm on the bottom of the machine seams to be cracked. Could that be the problem for the machine not starting its' cycle. Thank you.