VU+ Zero 4K (OpenATV 7.6) — blind scan only find 50% TP

S

SEOShamsher

Member
My Satellite Setup
Past setup:
• 8-ft dish covering 68.5°E, 75.0°E (Ku), 78.5°E, 83.5°E, 90.0°E, 93.5°E (Ku), 100°E, 105.5°E, 115.0°E
• 6-ft dish at 49.0°E
• Receivers: COSHIP CDVB2000B, Dish TV Zinga

Current status:
Sold all equipment — want to start again from scratch.
My Location
Ludhiana, Punjab, India
Setup
Receiver: VU+ Zero 4K | Image: OpenATV 7.6Satellite: Al Yah 1 (52.5°E)LNB: Universal (set to Universal LNB)

Problem
Al Yah 1 has 13 known TPs. My other chinese dvbs2 receiver finds all 13 and gets 200+ channels.VU+ blind scan finds only 6 TPs → ~95 channels. Missing 7 TPs completely.

Noticed: detected TPs show ~850 MHz frequency offset vs actual frequencies.Example: TP expected at 11938H appears as ~11088H in scan results.850 = 10600 − 9750 → looks like LNB is staying in low-band during high-band scan.

Tone mode behaviour
• Tone OFF → 6 TPs found, ~95 channels (partial — only low-band TPs) even those tp displaed as 850 Mhz added not matching with Lyngsat data
• Tone ON → TPs scanned but zero services/channels found
• Band mode → no TPs detected at all

1. Is the 22kHz tone switching broken in VU+ Zero 4K blind scan? (850 MHz offset suggests LNB not switching to high band during scan)
2. Is tone mode OFF/ON/BAND behaviour a known issue on Zero 4K?
3. Should I skip blind scan entirely and use predefined TP scan from satellites.xml?
4. Any workaround to get all 13 TPs and full channel count?Any help appreciated. Happy to share logs or scan output if useful.
 
SEOShamsher said:
3. Should I skip blind scan entirely and use predefined TP scan from satellites.xml?
Click to expand...
yes, better from XML
Code: 
    <sat name="YahSat1A (52.5E)" flags="2" position="525">
        <transponder frequency="11727000" symbol_rate="27500000" polarization="1" fec_inner="0" system="1" modulation="0"/><!-- MENA short/c/mis0 -->
        <transponder frequency="11747000" symbol_rate="27500000" polarization="0" fec_inner="4" system="1" modulation="2"/>
        <transponder frequency="11766000" symbol_rate="27500000" polarization="1" fec_inner="5" system="0" modulation="1"/>
        <transponder frequency="11785000" symbol_rate="27500000" polarization="0" fec_inner="3" system="1" modulation="2"/>
        <transponder frequency="11842000" symbol_rate="27500000" polarization="1" fec_inner="0" system="1" modulation="0"/><!-- MENA short/c/mis0 -->
        <transponder frequency="11862000" symbol_rate="31429000" polarization="0" fec_inner="0" system="1" modulation="0"/><!-- -->
        <transponder frequency="11881000" symbol_rate="27500000" polarization="1" fec_inner="4" system="0" modulation="1"/>
        <transponder frequency="11938000" symbol_rate="27500000" polarization="0" fec_inner="3" system="1" modulation="2"/>
        <transponder frequency="11977000" symbol_rate="27500000" polarization="0" fec_inner="3" system="0" modulation="1"/>
        <transponder frequency="12015000" symbol_rate="27500000" polarization="0" fec_inner="3" system="1" modulation="2"/>
        <transponder frequency="12034000" symbol_rate="27500000" polarization="1" fec_inner="3" system="1" modulation="2"/>
        <transponder frequency="12092000" symbol_rate="32000000" polarization="0" fec_inner="0" system="1" modulation="0"/><!-- MENA long/e/s -->
        <transponder frequency="12123000" symbol_rate="18283000" polarization="0" fec_inner="0" system="1" modulation="0"/><!-- ? -->
        <transponder frequency="12130000" symbol_rate="31000000" polarization="0" fec_inner="0" system="1" modulation="0"/><!-- -->
        <transponder frequency="12168000" symbol_rate="27500000" polarization="0" fec_inner="4" system="1" modulation="2"/><!-- MENA -->
        <transponder frequency="12187000" symbol_rate="27500000" polarization="1" fec_inner="0" system="1" modulation="0"/><!-- -->
    </sat>
1_0_C_709_EA7C_0_CE3ACEE_0_0_0_20260405192352.webp
screenshot_20260405191550.webp
Blindscan should be used to search for unknown feeds. There is no point in using it when Enigma updates the XML from the server.
screenshot_20260405191755.webp
 
But what about 850+ frequencies? All original TPs no signal but if add 850 then it works.
 
What model of LNB do you use, and how is it configured in the menu ?
 
1000122378.webp1000122373.webp
 
Tried both lnb

Chinese stb able to receive all tp with both of these lnb


I've configured lnb exactly you shared in screenshots.

I also did download latest satellite.xml move it to tux folder replace with old one.
 
Please close this thread finally it worked. I've been struggling from last 12 hours. Wasted my weekend on this. However I'm happy now finally. I guess the satellite xml was the culprit. I did updated but didn't tested it after.
 
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