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Multi-receiver/TV systems - Domestic only
Diagnose Faulty Quattro LNB - How To Test?
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<blockquote data-quote="KillingTime" data-source="post: 1150370" data-attributes="member: 258557"><p>Evening All,</p><p></p><p>After some more fault finding, I found the problem; the LNB, pictured. Looks like the hole let water in and that finished off the electronics. Should have looked at this right after testing the power supplies but it was raining & didn't want to go up the ladders.</p><p></p><p>The hole was a giveaway, but to answer my original question I found a way to test the LNB before getting a new one and can confirm the video method below does work with just one cable on a quattro. It will therefore also work on single, duals and quads. Tried the method on the new quattro LNB and the dead one. Some meter deviation on the working one, and no deviation on the dead one. My sat meter has an audible tone, and it's easier to hear the tone change than see the needle move.</p><p></p><p>[MEDIA=youtube]RFH19mE1RQQ[/MEDIA]</p><p></p><p>Picture of the new LNB installed at the 7 PM position for Astra2. Added some coloured tape & heat shrink to make IDing the cables easier, and heat shrunk over the F connectors before pulling the guard down to keep the weather out.</p><p></p><p>The above method only works if your receiver outputs 13/18 volts on the satellite cable. If it doesn't then the sat finder meter will not light up and you will not get a tone. You can also test the voltage by putting a straight paper clip in the receiver F port and measuring the voltage to chassis with a multi-meter.</p><p></p><p>My Zagema H7S (Enigma2) was doing something weird with the receiver ports. No voltage at all on any ports after the tune failed because it couldn't find a signal. Thought the receivers had blown. I only got a DC voltage when I was in the Signal Finder menu *and* I had the correct receiver port selected. This was my original problem - didn't spot the menu to select the correct port. You can also select different transponders as well and that changes the voltage (13/18) depending on the polarisation, but all voltages will work with a sat finder meter. My old Panasonic DSB30 (now 22 years old) seems to output 19v even when in standby mode by comparison.</p><p></p><p>Don't know what make the old LNB was. The weather has removed the ID sticker, but it was a quattro because I remember buying it. Glad it's not my switch (also pictured). Paragon seem to have gone out of business. Their website is up for sale and all their product documents have gone with it.</p><p></p><p>Thanks for the replies.</p></blockquote><p></p>
[QUOTE="KillingTime, post: 1150370, member: 258557"] Evening All, After some more fault finding, I found the problem; the LNB, pictured. Looks like the hole let water in and that finished off the electronics. Should have looked at this right after testing the power supplies but it was raining & didn't want to go up the ladders. The hole was a giveaway, but to answer my original question I found a way to test the LNB before getting a new one and can confirm the video method below does work with just one cable on a quattro. It will therefore also work on single, duals and quads. Tried the method on the new quattro LNB and the dead one. Some meter deviation on the working one, and no deviation on the dead one. My sat meter has an audible tone, and it's easier to hear the tone change than see the needle move. [MEDIA=youtube]RFH19mE1RQQ[/MEDIA] Picture of the new LNB installed at the 7 PM position for Astra2. Added some coloured tape & heat shrink to make IDing the cables easier, and heat shrunk over the F connectors before pulling the guard down to keep the weather out. The above method only works if your receiver outputs 13/18 volts on the satellite cable. If it doesn't then the sat finder meter will not light up and you will not get a tone. You can also test the voltage by putting a straight paper clip in the receiver F port and measuring the voltage to chassis with a multi-meter. My Zagema H7S (Enigma2) was doing something weird with the receiver ports. No voltage at all on any ports after the tune failed because it couldn't find a signal. Thought the receivers had blown. I only got a DC voltage when I was in the Signal Finder menu *and* I had the correct receiver port selected. This was my original problem - didn't spot the menu to select the correct port. You can also select different transponders as well and that changes the voltage (13/18) depending on the polarisation, but all voltages will work with a sat finder meter. My old Panasonic DSB30 (now 22 years old) seems to output 19v even when in standby mode by comparison. Don't know what make the old LNB was. The weather has removed the ID sticker, but it was a quattro because I remember buying it. Glad it's not my switch (also pictured). Paragon seem to have gone out of business. Their website is up for sale and all their product documents have gone with it. Thanks for the replies. [/QUOTE]
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Diagnose Faulty Quattro LNB - How To Test?
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