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Has my LNB developed tinnitus?


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#1 scriptmelvin †

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Posted 29 May 2023 - 22:59

I have zero reception on the low band (<11700 H&V) and quite good reception on the high band (>11700 H&V) on all three sats and all two connected connectors. I tested with three different receivers (two VU+ 4k and one Golden Media). My "Set voltage and 22kHz" switch in tuner settings is on.

 

I first thought it was a skew issue, but after checking all transponders with the e2 signal finder it seems to be band-related.

 

Is it possible my LNB (CD/TVV Triple LNB Quad, 19.2E, 23.5E, 28.2E) is somehow stuck in high band (on all sats) and thinks it is hearing a constant 22kHz?

Do any of you have had any similar experience?

Any other suggestions?


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Re: Has my LNB developed tinnitus? #2 WanWizard

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Posted 29 May 2023 - 23:21

Bit unlikely that all 3 LNB's develop that problem at the same time?

 

If you want, I have one spare here, I can throw it in the car, just in case? If you don't need it, I can always take it back with me... ;)


Currently in use: VU+ Duo 4K (2xFBC S2), VU+ Solo 4K (1xFBC S2), uClan Usytm 4K Pro (S2+T2), Octagon SF8008 (S2+T2), Zgemma H9.2H (S2+T2)

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Re: Has my LNB developed tinnitus? #3 scriptmelvin †

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Posted 30 May 2023 - 00:01

Bit unlikely that all 3 LNB's develop that problem at the same time?

True. Could the builtin DiSEqC switch be faulty? Could it be skew-related after all?
 

If you want, I have one spare here, I can throw it in the car, just in case? If you don't need it, I can always take it back with me... ;)

Thank you, very kind, but I have a spare here. Problem is dish access, it's death-defying here... I'll probably be ringing neighbors doorbells soon to find out if they have better roof access (roof terraces are popular here).

 

In the meantime, I'm open to suggestions that do not involve physical dish access (if there are any).


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Re: Has my LNB developed tinnitus? #4 scriptmelvin †

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Posted 31 May 2023 - 23:46

Tried with a dedicated satmeter. Same result (of course).

 

No one else ever had this issue? Or has any ideas?


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Re: Has my LNB developed tinnitus? #5 40H3X

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Posted 2 June 2023 - 18:19

Also have a triple LNB quad for many years and never experienced this (knock on wood) and the only thing I can think of is that it seems unlikely that all three are experiencing the same problem, but that one was already mentioned. Maybe a very long shot, but what happens when you unscrew all the coax cables that are connected to your recievers.


Hardware: Vu+ Uno 4K SE - Vu+ Duo 4K  - Fuba 78 cm - Tripleblock LNB Quad 19.2/23.5/28.2 - DS918+
Software : OpenPLi - OSCam - Settings van Hans - Autotimer - EPGImport

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Re: Has my LNB developed tinnitus? #6 scriptmelvin †

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Posted 2 June 2023 - 18:41

I did that (with box switched off) and left them unconnected for a while before I reconnected one of them to the satmeter. No cigar, unfortunately.


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Re: Has my LNB developed tinnitus? #7 zeros

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Posted 10 June 2023 - 17:48

Last year I changed all my LNB’s in terms of prophylaxis, although there was no need. Just they have gone up to cheap and I think they were too old. I have a similar thing(s) with individual LNBs on several occasions. Do you have a picture of your special LNB?


DM920UHD DVB-S2X TRIPLE tuner + Triple M.S tuner DVB-S2X, DVB-T2/T, QboxHD, QboxHD Mini, Icecrypt T2300HD,
Qviart Lunix3 4K, Raspberry Pi 4 Model B 4GB & 8GB

Vertex 4K60 4:4:4 600MHz


Re: Has my LNB developed tinnitus? #8 scriptmelvin †

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Posted 10 June 2023 - 19:47

Here's one:

tripple_quad_lnb_adjelectronics-500x500.

Plenty more on the internet: link


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Re: Has my LNB developed tinnitus? #9 zeros

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Posted 11 June 2023 - 05:23

Yep, maybe it can be repaired, but I'm afraid you'll have to change it.

DM920UHD DVB-S2X TRIPLE tuner + Triple M.S tuner DVB-S2X, DVB-T2/T, QboxHD, QboxHD Mini, Icecrypt T2300HD,
Qviart Lunix3 4K, Raspberry Pi 4 Model B 4GB & 8GB

Vertex 4K60 4:4:4 600MHz



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