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Old 08-07-2016, 06:25 AM   #15
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Have a similar problem . Here in Switzerland , the Radio on DAB + . When I turn on the LED lighting - the radio is silent ...
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Old 08-07-2016, 07:37 AM   #16
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Thank you all for sharing your experiences.

Let's take just a moment to consider this.


So, the introduction of LED fixtures and Apple charging ports in AS products is fairly recent, like just the past 3 years or so. Many, maybe most of our AS's with these features are still warranted against defects. MY AS does not have access to 12 volts as the cigar lighter has slipped away into history. The suspect parts are not branded and AS user manuals offer no insight into to whom we should be seeking for a fix for this defect. It's entirely likely that AS didn't know about this problem until the suspect parts were fully integrated into their production, but they certainly know now and despite this, still use the same parts.


Is AS as the maker, responsible to find and deliver a fix to those of us who have this problem under the terms of it's warranty?


Should it be fair that AS simply ignores the issue and leaves it up to AS owners like "Joe" and "John" to find a solution and pass it around the neighborhood for all to find in forums like this one?


Or maybe, AS production parts more recently changed and there are just thousands or hundreds of owners who have this trouble and new owners don't.


What do you think?


Are you just willing to turn a blind eye and live with it?


Or....?
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Old 08-07-2016, 07:59 AM   #17
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This is a complicated issue that Airstream doesn't fully understand. All the wiring in an AS is installed as if it was for power, not for both power and data. I talked with several AS engineers during Alumapalooza this year about these type of issues. They admitted they are mechanical not electronics engineers. They understand that they need to improve in this area.

One suggestion is to make sure the USB cable is a good one, not a Wally World special. A second trick that can sometimes work is to put a loop in the cable. Short of one or both of these helping the issue can only be addressed with better cabling at the time they are made.
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Old 08-10-2016, 09:58 AM   #18
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we encountered this problem with our 2016 FC 19...any device plugged into any of the four USB charging ports causes signal loss on the tv and on the Clarion sound system. We discovered this on night one of our maiden voyage...:/

Looked in our owners manual and could find no reference to the charging ports. Likewise, the USB charging ports are not shown in any of the electrical system wiring diagrams.

It seems like an issue Airstream should address. We have four charging ports in our F150 and there are no issues with interference or loss of reception. A separate circuit and better shielding may be needed.

In the meantime, I guess we'll be charging in the truck"
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Old 08-10-2016, 10:23 AM   #19
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I have noticed that the coax cable from the wall plate to the television, on my trailer, is very thin and not like the usual thicker coax. I am not sure if it is the same think cable behind the walls. Perhaps the shielding of this cable is not adequate to prevent other RF signals from interfering?
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Old 08-11-2016, 12:17 PM   #20
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Quote:
Originally Posted by SMLJeep View Post
This is a complicated issue that Airstream doesn't fully understand. All the wiring in an AS is installed as if it was for power, not for both power and data. I talked with several AS engineers during Alumapalooza this year about these type of issues. They admitted they are mechanical not electronics engineers. They understand that they need to improve in this area.

One suggestion is to make sure the USB cable is a good one, not a Wally World special. A second trick that can sometimes work is to put a loop in the cable. Short of one or both of these helping the issue can only be addressed with better cabling at the time they are made.
You don't need an electrical engineer on staff to test new systems before they go into production. This is NOT electrical rocket science. That's a pretty lame excuse on AS part and they should be embarrassed for it and resolve the issues proactively. This is not a $18k white box. Also, given this is my third Airstream, I don't think any management in AS owns and/or uses their own products. If they did, they would be fuming mad and upset as we are.

With that I did some more testing with the TV, I am into my third month on the road wit the 26u: the TElevision does not work using the antenna ( have not tested cable TV), electronic Interfering and the TV is not viewable when: front vent even slightly open, overhead LED lights on in living room, bathroom exhaust fan on, stove exhaust fan on. I have not tested the AC. I don't seem to have the same problem as others mention charging iPad from USB in DVD overhead port. I am using an Apple 6 foot cable.

With the living room bed caving in when guests sleep in, bathroom door jam almost completely separated from door frame ( I hold it together with Gorrila Tape), slide out microwave door held in place with Gorilla Tape). I stand by my comment; AS dose not test nor use their own products.
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Old 08-12-2016, 07:05 AM   #21
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So, in just a very few days since I raised this issue, we are learning that the failure of TV reception in 15 and 16 models, perhaps even 17 production too, is apparently caused by after market product choices AS includes in our models. For example, the introduction of the "ducted" air forced on all of us a TV antennae that cannot be raised or directionally focused. There appears to be no way for AS to perforate the new roof to allow the old style, fully adjustable antennae that served us so well for decades.

It seems we are describing faults that are apparently caused by the mix of 110v/ 12v equipment that are not happy about being together in the same wire bundle. And those of us who previously owned AS's with antennas that could be raised and aimed, are not satisfied with what we have today.


As far as I know, AS has never refused to fix any warranty problem brought to their Jackson Center shop for a fix. I am thinking it's not enough for us just to be complainers, but we as owners should be bringing these troubles right to the source for a fix. This might bring AS to a fix that can be delivered to owners from dealers who today, apparently have no solutions.


Have you tried JC yet, and if so, did they fix or fail? Or maybe you have decided to ignore the problems, just work around things, and say and do nothing?


The alternative is not so appealing. Maybe we should just charge our Apple products in our tow vehicle, not the AS. And only use cable TV.


I think we have a part to play in finding the solution.
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Old 08-12-2016, 07:20 AM   #22
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Installing more high tech items often comes at a loss of use ability of the trailer for camping.
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Old 08-16-2016, 11:42 AM   #23
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AS response...

here is the response I got from AS customer service regarding the signal loss problem...

I have replicated the problem with six different Apple and Android products...all using the original charging cables...

with a plug in charger in a 120v outlet, there is no problem...

it seems to be a shielding, circuit isolation problem in the 12v and/or USB wiring....it is worth noting that the usb ports and antenna amplifier are not shown in the owner's manual wiring diagrams

it seems everyone who has encountered the problem needs to write to them so that they are aware of the issue...


"customer_support@airstream.com

8:17 AM
Good morning Richard,

I hope you had a nice Monday! I haven’t heard about this type of issue before to be honest. I have asked around our service center and our technicians are saying there really isn’t a fix for this except maybe changing out the USB ports. Even that might not solve the issue. It would also be hard to pin point what is causing the interference. It could be the UBS port, the charger cord that is being used, or even the device itself that it being charged. I apologize I do not have a better answer for you. An authorized dealer might be able to help out with this more. Again, I apologize!

If I may assist you further. Please feel free to contact me!

Sincerely,

CraigWeir
Airstream Customer Relations
937-596-6111 Ext. 7401
"

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Old 08-16-2016, 12:11 PM   #24
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Also with the circular HD attennas many times when you riaise the front fantastic fan vent , with fan on or off, it will kill your TV reception. Lower the vent and your reception comes back. Must be the metal frame in the vent getting in the way of the antenna.
That is a separate issue. Digital TV broadcasting is very separable to line of sight issues. The charging issue may be a problem of capacitive coupling. Airstream has long run all wiring along the ceiling in close proximity to each other. While this is not an issue between 120 ac and 12 dc one would have to look at the noise that may be on the USB charging circuit. An interesting experiment would be if you can locate the 5 volt source disconnect the current wiring from it and run a new test line down the center of the trailer and see if the problem goes away.
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Old 08-16-2016, 12:47 PM   #25
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... if you can locate the 5 volt source disconnect the current wiring from it and run a new test line down the center of the trailer and see if the problem goes away.
The USB outlet contains a 12v to 5v transformer - there is no 5v circuit.
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Old 08-16-2016, 02:00 PM   #26
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Interestingly, I have replaced 120v outlets with outlet/USB outlets with no interference. Of course that is a 120v AC to 5 v DC conversion. I wonder if that makes a difference?
Larry
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Old 08-16-2016, 02:26 PM   #27
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The USB outlet contains a 12v to 5v transformer - there is no 5v circuit.
Since a transformer will not work with DC we have to assume there is other circuity that is generating the noise. I did not know whether there was a single source for the 5 volts in my above comment. If each outlet has it's own rectifier circuit and those circuits are generating noise looks like the solution is get rid of them.

The clocks I use in my trailer have USB tap and I have not seen any problem with other electronics while they are charging a device.
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Old 08-16-2016, 03:54 PM   #28
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Higher Quality USB Outlets

Quote:
Originally Posted by HowieE View Post
Since a transformer will not work with DC we have to assume there is other circuity that is generating the noise.
I think that the USB outlets may use a shunt regulator (resistance) to drop the voltage.

I took out the one in the cabinet with my radio/DVD player and replaced it with a marine grade 12v outlet, but haven't yet tried that with the cigarette lighter usb adapter while watching the TV. The quality of the USB outlets looked inferior compared with the Blue Sea USB outlets marine outlets (CA$45) that I have used before.

West Marine sells a nice unit that includes a 12v outlet and a dual outlet USB (US$50) with an integrated 15 amp circuit breaker and an on/off switch to eliminate any parasitic draw when not in use. I am considering replacing the USB outlet in the night stand by the bed and using this instead. I like to have the 12v outlet to power some devices that still require 12v.

Name:   Blue Sea 12v socket and dual USB .jpg
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