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Old 07-06-2005, 06:59 PM   #1
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When I put on the surround sound from the TV the speakers create a hum...It doesn't matter the volume the hum is the same. It doesn't do it on the TV only speakers or on the radio that plays thru the same speakers. It doesn't matter if I am using shore powwer, generator or battery. Any thoughts? I have notice on the Winnebago wiring diagram that some models have a TV amp. Any idea where that is, or what els could be causing the hum?
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Old 07-06-2005, 06:59 PM   #2
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When I put on the surround sound from the TV the speakers create a hum...It doesn't matter the volume the hum is the same. It doesn't do it on the TV only speakers or on the radio that plays thru the same speakers. It doesn't matter if I am using shore powwer, generator or battery. Any thoughts? I have notice on the Winnebago wiring diagram that some models have a TV amp. Any idea where that is, or what els could be causing the hum?
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Old 07-06-2005, 08:04 PM   #3
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There's a filter coil toward the inside of the TV enclosure on the right side; It's about as big as a "D" cell battery. Remove the coil from the enclosure and let it hang there for a moment still attached. Playback the radio and TV and check again. You may be surprised with the results.
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Old 07-07-2005, 03:19 AM   #4
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neilnbe, what DriVer is alluding to is that the filter coil, if relocated to a different position, can sometimes eliminate the hum. On my coach, I removed the coil completely to get rid of the hum.
Try doing an "advanced search" by clicking on the magnifying glass icon labeled Find above. Look for "speaker hum" over the past 18 months and you'll get a lot of good info.
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Old 07-07-2005, 07:15 PM   #5
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Thanx for the suggestions...however I don't think I have one of those. I pulled the TV out and the only thing back there was a small box about the size of a pack of cigarettes that said AMP-3 on it. I did see a small dip switch on the amp but when I switched it it didn't do anything. I also tried relocating the amp and this didn't do anything. I checked the ground on the inverter and the amp and both were good. Any other thoughts? Thanx for the help.
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Old 07-21-2005, 04:54 AM   #6
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Wow, you had to remove the TV? In my '03 Adventurer I just sat on the dash with my back to the windshield and reached into the back of the cabinet. They must've changed it.
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