Service Issues
Merchant Series Nv 785 786 788 789 Merchandiser
Choose the problem first, then open the focused route for tools, safety notes, locator help, parts status, and checklist steps.
Issue Finder
What Problem Are You Seeing?
Search symptoms, filter by system, then open the matching route.
No power or dead display
This flow guides you through initial troubleshooting steps for common operational issues.
No power or dead display Review
This flow addresses secondary diagnostic paths when initial checks do not resolve the issue.
Controller or electronics problem
Use this when controller, harness, board, or low-voltage electronics evidence is involved.
Cooling or refrigeration problem
Use this when the machine is not staying cold or refrigeration components are involved.
Door, latch, or lock problem
Use this when the door, latch, lock, gasket, or seal is the visible problem.
Payment or money acceptance problem
Money, validator, coin, bill, or card-reader clues point to this route.
Machine Context
Areas This Machine May Use
Use these areas as orientation only. Open a specific issue before following diagnostic steps.