Forum Home
PC World Chat
Thread ID: 125459	2012-06-30 04:43:00	TV Dish Downlead	Poppa John (284)	PC World Chat

Post ID	Timestamp	Content	User
1284732	2012-06-30 04:43:00	Hi All. A TV problem. The Dish downlead cable is white with screwed metal Connector. There is also an extension lead to the bedroom. There appears to be no signal to the set top box in the bedroom. I test between the metal outer of a connector & the copper inner 'pin' with an ohmmetr & get a "Zero. Meaning a connection. This should not be...Correct? There should be NO reading...right? Thanks. PJ	Poppa John (284)
1284733	2012-06-30 07:08:00	There is also an extension lead to the bedroom. Extension lead from where? Is a splitter in use?	ReefRunner (16049)
1284734	2012-06-30 07:46:00	There is also an extension lead to the bedroom . Extension lead from where? Is a splitter in use? No splitter . Lounge TV is on UHF aerial . Dish d/l into lounge, then Ext cable ino bedroom . PJ	Poppa John (284)
1284735	2012-06-30 07:57:00	Not sure I'm following the setup, is the extension cable permanently connected somehow or do you just use it to extend the aerial as required? I take it all works ok in the lounge. Re-reading it seems you've extended the dish into the bedroom and are using UHF in the lounge correct? As for the 0 ohms, no that's not right. The cable should read nothing unless it's plugged in and then it should have a reading approximating the termination around 75 ohms (it's an AC impedance not a DC resistance so it won't be exact). On the other hand if it is connected it might look like 0 ohms to a meter if there's a coil on the circuit. If you have an earth handy at each end you can connect to it and use it to test continuity with the cable unplugged.	dugimodo (138)
1284736	2012-06-30 08:17:00	Not sure I'm following the setup, is the extension cable permanently connected somehow or do you just use it to extend the aerial as required? I take it all works ok in the lounge . Re-reading it seems you've extended the dish into the bedroom and are using UHF in the lounge correct? As for the 0 ohms, no that's not right . The cable should read nothing unless it's plugged in and then it should have a reading approximating the termination around 75 ohms (it's an AC impedance not a DC resistance so it won't be exact) . On the other hand if it is connected it might look like 0 ohms to a meter if there's a coil on the circuit . If you have an earth handy at each end you can connect to it and use it to test continuity with the cable unplugged . The lounge TV is on a UHF aerial & is ok The bedroom is on a dish, not a Sky one . Dish wire into lounge male plug, adaptor, Male plug on cable into bedroom, male plug into Strong set top Sat box . It has been working but just stopped, all by itself . Either I have a faulty cable or a faulty set top Freeview box . Dish . . . downlead . . . male plug . . . adaptor . . . male plug . . . cable . . . male plug . . . Freeview box . . . . Video player . . . TV . . . is the set up . I suspect one of the ends of the ext cable as there should not be areading between he centre core & the screen . PJ	Poppa John (284)
1284737	2012-06-30 11:28:00	If you are testing with the cable unplugged, it certainly should be open circuit.	linw (53)
1284738	2012-06-30 12:24:00	Check the output voltage on the Strong box, memory tells me it should be around 18v DC.	ReefRunner (16049)
1284739	2012-06-30 23:00:00	Check the output voltage on the Strong box, memory tells me it should be around 18v DC. Test where, Aerial input? PJ	Poppa John (284)
1284740	2012-06-30 23:33:00	Checked cable again & clear. Strong Aerila output IS 18v. I concede defeat & will have to call in Proffessional help. Thanks for all the help here. PJ	Poppa John (284)
1284741	2012-06-30 23:48:00	Yeah, you should have a voltage output from the connector you connect your dish cable to on your settop box (powers the LNB (www.google.co.nz) (the doohickey in the centre of your dish)). Turn your meter to VoltsDC range, connect leads to center conductor and outer shell. To check your cables for continuity, you need to set your meter on a low ohms range, disconnect the cables first, then check at both ends of each cable, the outer/shield then the inner conductor (checking for breaks in the cable/ open circuit), then check at one end (same range) between inner conductor and shield (for shorts/closed circuit (you'll get a reading above zero if it is shorting)).	feersumendjinn (64)
1 2