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Author Topic: Why does my LG monitor turn off and on when transmitting?  (Read 3208 times)
KK4RXN
Member

Posts: 131




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« on: November 03, 2013, 05:53:13 PM »

I have my TS-480SAT connected with a RigBlaster Plus II to a Gateway computer running Windows XP. Connected is an LG 19" older analog flat screen. Why does it want to turn off and on when transmitting on some bands?
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Barry
KK4RXN
Jeremiah 29:11-13 / John 3:16
K3DCW
Member

Posts: 283




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« Reply #1 on: November 03, 2013, 06:58:56 PM »

You're getting RF into the monitor, likely via one of the cables although it can be directly into the controls.  I used to have a similar problem on 40m with a set of Samsung monitors.  I found that the monitors with "touch controls" on the front are particularly susceptible to such issues.

I use 4 LG monitors in my shack, all with mechanical controls (actual buttons, not touch sensitive sensors) with no problem.

Double check your modem cables and if they are being crossed by any RF cables, move them.  Some ferrite chokes or putting some loops in your monitor cables (including power) may help as well.  Also changing the cable type (VGA to DVI or DVI to HDMI) can sometimes fix this. Ultimately, you need to determine where the RF is getting into your system and eliminate or mitigate it.

73

Dave
K3DCW
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KK4RXN
Member

Posts: 131




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« Reply #2 on: November 04, 2013, 06:09:53 AM »

I'll double-check it and see what might be the problem. This is an older flat panel, and with all the cords and wires I have going in the shack, something's bound to be crossing each other.
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Barry
KK4RXN
Jeremiah 29:11-13 / John 3:16
KK4RXN
Member

Posts: 131




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« Reply #3 on: November 05, 2013, 02:56:11 PM »

Looks like the monitor power cord worked its way into the PVC of the coax choke I have in the shack. Hopefully separating those will have me set now. Thanks!
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Barry
KK4RXN
Jeremiah 29:11-13 / John 3:16
NK7Z
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Posts: 2525


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« Reply #4 on: November 05, 2013, 09:29:00 PM »

I have my TS-480SAT connected with a RigBlaster Plus II to a Gateway computer running Windows XP. Connected is an LG 19" older analog flat screen. Why does it want to turn off and on when transmitting on some bands?
Get some Ferrite beads and start placing them on the lines...  You have RF getting into things would be my guess.
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Thanks,
Dave
Amateur Radio: RFI help, Reviews, Setup information, and more...
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