Kenmore dishwasher panel locked up

I have a kenmore dishwasher model 66513834k601 ser. FW3311429.
The panel is locked up (Electronically) I have held in the dry heat button that is supposed to lock & unlock panel. led flashes panel still locked up, killed the power for 10 min. turned back on still locked up.
any suggestions? did the circuit board go south?

Here is a tech sheet
http://www.servicematters.com/docs/wiring/Tech%20Sheet%20-%20W10130990.pdf

I would check the keypad with a meter, could be a shorted key.

[quote=denman;150450]Here is a tech sheet
http://www.servicematters.com/docs/wiring/Tech%20Sheet%20-%20W10130990.pdf

I would check the keypad with a meter, could be a shorted key.[/quote]
Thank you Denam. Here is what I found out. behind the front bottom panel of some dishwashers is the troubleshooting guide (tech sheet).
I looked up my problem, it stated to disconnect power to dishwasher, (4 screws on the door two top screws on each side will give you acces to electronics) disconnect the keypad ribbon from the board put everything back together leaving ribbon diconected then power back on, if drain pump runs for two minutes short is in key pad (Drain pump ran for me). If short still persists pump will not run (Eliminate key pad problem, short is someplace else).
I also ran the diagnostics by doing the following: Connecting keypad ribbon back on the circuit board then, connecting power back on, push the following buttons in sequence within 6 seconds Heated dry-Normal-heated dry-normal. All leds will light up machine will run through all cycles, (Warning all problem codes that were stored in the machine will clear).
Machine ran fine through all cycles. control panel is unlocked. I did notice a dark spot on the ribbon to the key pad (Possible problem). I am going for the keypad replacement.

I will keep my fingers crossed