Repair of Necta Main Board 6735/536/02 - Sfera, Snakky, Rondo, Astro, Kikko

Fast and effective repair of the main CPU board in popular Necta vending machines.

The Necta main board with catalog number 6735/536/02 (also referred to as 6735-536-02) is the core control board used in a wide range of compact and medium-sized Necta models.

Necta main board 6735/536/02

Photo of the Necta main board 6735/536/02

Necta machine models where this board is commonly found

  • Sfera
  • Snakky / Snakky Max / Snakky SL / Mini Snakky
  • Rondo
  • Astro
  • Kikko / Kikko Max / Kikko RY
  • Oblo
  • Brio 3
  • Kobalto
  • Konvivio

Most common faults of Necta main board 6735/536/02

  • The board does not start at all (no LEDs on, no response after powering on)
  • Incorrect detection of shelf quantity or improper shelf control
  • Multiple motors start simultaneously when dispensing a product
  • Display not working (black screen or #### characters)
  • Freezes during photocell test
  • Does not detect the selected shelf/column
  • No communication with coin mech (machine does not respond to coin mech or payment terminal)

How to diagnose Necta main board 6735/536/02

  1. Check the input power supply - it should be stable 24V AC, and the orange LED “PWR” on the board should light up.
  2. Check whether the green LED “RUN” on the board is blinking. No blinking (or constant/solid “RST” red LED) usually indicates a board failure.
  3. If the board starts but freezes during the photocell test → the board is faulty.
  4. Pay attention to whether the board correctly detects the number of shelves/springs at startup. If not → the board is likely damaged, and there is a short circuit somewhere in the wiring harness to the shelves:
    • Check if any wiring harnesses are worn or damaged (often they get caught in the shelf guides)
    • Check if the motor pins for the springs are not touching the metal rear wall of the machine and are properly insulated
      NOTE: This check is extremely important! From our experience, it happens customers send us damaged boards without fixing the short circuit within the machine, and the board fails again shortly after repair (not covered by warranty).
  5. If the board starts → go to the service menu and run compressor and product dispensing tests. The compressor should respond to on/off commands, and each spring should rotate individually when dispensing.
  6. If there is no communication with the coin validator → check the payment system settings. If incorrect → the backup battery is likely dead and the machine boots with default settings. If settings are correct and you have a payment system → check the MDB/Executive switch jumper settings. If correct → disconnect the payment system and connect the coin validator directly to the board connector - if the board still shows “no change” → the board is faulty.

Price and turnaround time

Price : 93 EUR net

Turnaround time : 5 working days

Description : Standard repair for most boards (CPU, actuator, hub board)

The quoted price and turnaround time are estimates. In rare, unusual cases, we will agree on the conditions with you beforehand.

How to prepare and send the board for repair

  1. Label the package
    Clearly write on the box: “ELECTRONICS FOR REPAIR - VENDFix.eu”

  2. Describe the faults
    Attach a note to each board with the problem description (defines diagnostic scope)

  3. Include invoicing and return shipping details

    • Company name / full name
    • Full address (including postal code and city)
    • VAT number (if company)
    • Phone number and email

  4. Send to:

    VENDFix
    Techniline sp. z o. o.
    Sosnowa 4
    26652 Janiszew
    Poland
    tel. +48 696-42-10-42

Ready to send your Necta 6735/536/02 main board?

Contact us

Good luck with your machines!