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Author Topic: radio loses signal with heated rear screen on  (Read 2873 times)

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grifter

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radio loses signal with heated rear screen on
« on: 15 December 2017, 07:28:49 »

As per title, the radio signal goes fuzzy when rear screen on. Take it some sort of earth problem perhaps. Am i right in saying the rear element is the aeriel?
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Lincs Robert

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Re: radio loses signal with heated rear screen on
« Reply #1 on: 16 December 2017, 17:52:23 »

It is indeed. I had this problem on a number of Omega saloons, never did cure it - although it never occurred in a strong signal area.

I just got used to switching the radio off until after the rear screen had done its stuff.
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Andy B

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Re: radio loses signal with heated rear screen on
« Reply #2 on: 16 December 2017, 18:07:00 »

My Merc does the same ..... not always though   ???

And my Omega also had the same problem  ..... I checked connections etc but didn't cure it
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Doctor Gollum

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Re: radio loses signal with heated rear screen on
« Reply #3 on: 16 December 2017, 18:58:15 »

Moisture in the amplifier module... Once symptoms start, only cure is new replacement.

Another unintended consequence of not using aircon ::)
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Andy B

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Re: radio loses signal with heated rear screen on
« Reply #4 on: 16 December 2017, 19:11:09 »

Moisture in the amplifier module... Once symptoms start, only cure is new replacement.

Another unintended consequence of not using aircon ::)

My air/con is always on  ..... always has been
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Doctor Gollum

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Re: radio loses signal with heated rear screen on
« Reply #5 on: 16 December 2017, 20:00:34 »

Being an estate, the amplifier is probably buried in a soggy spot in a rear quarter  ;)
« Last Edit: 16 December 2017, 20:02:55 by Doctor Gollum »
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VXL V6

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Re: radio loses signal with heated rear screen on
« Reply #6 on: 16 December 2017, 20:45:10 »

First step is to clean the inside of the window.
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Lincs Robert

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Re: radio loses signal with heated rear screen on
« Reply #7 on: 20 December 2017, 05:32:32 »

Moisture in the amplifier module... Once symptoms start, only cure is new replacement.

Another unintended consequence of not using aircon ::)

And poor design! There is actually a general issue with ageing electronics being susceptible to moisture- apparently some of the black resin used to encapsulate chips etc can become porous with age!
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Marks DTM Calib

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Re: radio loses signal with heated rear screen on
« Reply #8 on: 21 December 2017, 10:25:00 »

From personal experience I cant say I have noticed the electronics being a common cause, the few I have seen were either a loose ground connection or an element fault.

With the heated rear screen on, are all bar showing signs of heating/clearing and all to a similar level?
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grifter

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Re: radio loses signal with heated rear screen on
« Reply #9 on: 22 December 2017, 11:13:42 »

From personal experience I cant say I have noticed the electronics being a common cause, the few I have seen were either a loose ground connection or an element fault.

With the heated rear screen on, are all bar showing signs of heating/clearing and all to a similar level?

I think so but will double check
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grifter

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Re: radio loses signal with heated rear screen on
« Reply #10 on: 22 December 2017, 11:14:15 »

Being an estate, the amplifier is probably buried in a soggy spot in a rear quarter  ;)

It's a saloon
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Doctor Gollum

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Re: radio loses signal with heated rear screen on
« Reply #11 on: 23 December 2017, 00:23:38 »

Being an estate, the amplifier is probably buried in a soggy spot in a rear quarter  ;)

It's a saloon
The R Class isn't  ::)
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Kevin Wood

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Re: radio loses signal with heated rear screen on
« Reply #12 on: 23 December 2017, 00:54:44 »

From personal experience I cant say I have noticed the electronics being a common cause, the few I have seen were either a loose ground connection or an element fault.

With the heated rear screen on, are all bar showing signs of heating/clearing and all to a similar level?

Yep - most likely arcing at a small fracture in the screen element or a poor connection where the window attaches to the vehicle loom.
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