Soap dispenser not opening on viking DFUD142 dishwasher

SOURCE: Dishwasher soap dispenser sticks

Mine dishwasher (a Maytag) did this also. At first it was becoming stuck because of the soap. My repair guy cleaned it and I switched to liquid soap and it worked great another 2 years then did it again. That time it was just wore out and had to be replaced. I was told it was no longer available but we found it here http://www.repairclinic.com/and our repair guy installed it. He was amazed because he had even called everywhere.

SOURCE: Dishsoap stays in soap dispenser

Same thing happened to us. We noticed that it happened if the soap was left sitting before starting the washer. Since then, we immediately start the washer after putting soap in it and the problem appears to have gone away.

So much for the delayed start features, but at least the soap doesn't stick anymore.

good luck!

SOURCE: soap door won't open during wash cycle

its either the dispenser or the timer/pcb.

SOURCE: Dishwasher leaves soap in dispenser.

Hi Dirty Dish gang.
After having 2 appliance repairmen here, I now have the latest scoop on our dishwasher problems, $200 later!
Los Angeles IS currently having hard water issues. Also, all the new cleaning gels etc. are actually a cause of our dishwasher problems.  
So, here is what we need to do:
1. Use Cascade POWDER detergent only.  Make sure is is just "plain" no "scented" or "complete"  or gel, etc. (I have tried a phosphate free powder and gel and this is a cause of our problem as well!) 2. Use Jet Dry in the dispenser (set it to a 2-3 opening) 3. Make sure water is at least 120 degrees 4. Only run dishwasher on "normal" setting.  All others just run it longer, hence causing more water stains. 5. Do not pre-wash dishes! You can knock of chunks with a "non" soapy brush, but don't rinse (the oils actually help to clean the dishes) 6.  Do not wash sponges in dishwasher.
Acid Wash: The repairman just gave my washer an Acid Wash today. It says it is an acid derived from lemon, I got mine from Carters appliance in Torrance, CA for about $19. I am to run a normal cycle with the above mentioned Cascade after this "acid cycle" is finished.
If you are still having problems:
Monthly maintenance: Glass Magic: Buy a box of Glass Magic (near the Cascade)  Use 1 Tbsb in main detergent compartment of dishwasher along with the Cascade, till washer starts working again. White Vinegar: You can run an empty dishwasher with white vinegar once a month.  Fill a bowl with 2 cups vinegar and place on bottom rack.  Then run as a normal cycle...this allows vinegar to disperse slowly.
So far it seems to be working.  Good luck.

SOURCE: Whirlpool Gold Quiet Partner IV issue with soap dispenser

I'd check the spray arms it may be there is not enough water or the wataer is not getting where it needs to be to disperse the soap. that is where I'd start.