hardware fault: Tuner Slot A

[Cristi's]

Hi,

Even with tuner A disabled in software, simply having a tuner module physically inserted in slot A causes tuner B to stop working. Removing the module from slot A restores full functionality. This confirms a hardware defect of slot A causing electrical interference.

I am writing to report a confirmed and reproducible hardware fault related to Tuner Slot A on my Vu+ receiver and to ask for guidance regarding repair or RMA, preferably handled within the UK.

After extensive and systematic testing, I can confirm that Tuner Slot A is hardware defective and causes severe reception issues, independent of software, configuration, tuner module, or LNB.

Summary of the issue:​

• With any DVB-S2X FBC tuner module installed in Slot A, reception is limited only to lower frequencies (low band).
• The upper frequency band is not received at all.
• The issue occurs with:
  
  • different tuner modules,
  • different LNBs (Universal and SCR/Unicable),
  • factory reset and fresh image installation.
• When a tuner module is physically present in Slot A, Tuner Slot B stops working, even if Slot A is disabled in software.
• Removing the tuner module from Slot A restores full and stable operation on Slot B.

Tests performed:​

• Two different DVB-S2X FBC tuner modules tested
• Universal LNB verified on another receiver (full reception confirmed)
• Factory reset and fresh OpenPLi installation
• Independent testing of Slot A and Slot B
• The issue is fully reproducible

Conclusion:​

This behavior confirms a hardware fault of Tuner Slot A, most likely related to the RF path or band switching circuitry, which also electrically interferes with Slot B.

Current workaround:​

• Slot A must be left physically empty
• Only Slot B can be used reliably

To anyone: Could you please advise on the appropriate next steps:

• repair,
• replacement,
• or RMA procedure?

If possible, I would appreciate confirmation whether this case can be handled by a UK-based service partner or distributor, as the unit is currently located in the UK.

Thank you very much for your time and support.

Kind regards,

 

[Sicilian]

I think your first port of call should be where you purchased the receiver if its still under warranty.

One thing though, if you take out the Tuner module from Slot B and put it into Slot A, leave Slot B empty, does Tuner still fail?