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Amiga computer related discussion => Amiga Hardware Issues and discussion => Topic started by: petercli on April 19, 2014, 03:42:07 PM

Title: A1200 - insulate CF from touching rf shield?
Post by: petercli on April 19, 2014, 03:42:07 PM
When I install my CF card into my Amiga 1200 , do I need to place  some kind of insulation   between the CF card and the RF shield? (To avoid interference or a   short )
 Or is it ok the way it is?
 
 Here is a picture :
 https://plus.google.com/photos/104432096903073723714/albums/6004010865074430049
Title: Re: A1200 - insulate CF from touching rf shield?
Post by: ZeBeeDee on April 19, 2014, 03:58:51 PM
Stick some cardboard to the underside of the CF interface
Title: Re: A1200 - insulate CF from touching rf shield?
Post by: Lurch on April 19, 2014, 07:23:58 PM
Insulation/electrical tape.... or just remove the RF shield, get's in the way later on ;-)
Title: Re: A1200 - insulate CF from touching rf shield?
Post by: gertsy on April 20, 2014, 12:52:57 AM
I got black electrical tape on the underside of the shielding there and where it drops down to the expansion connector.
Title: Re: A1200 - insulate CF from touching rf shield?
Post by: magnetic on April 20, 2014, 02:24:28 AM
Any of those solutions will work. Ive had cf conveters touching the shielding without shorting problems as well, so you could just leave it. Id actually recommend a CF IDE adaptor that goes directly on the ide port without a cable and you wont have this problem. That is the setup in my 1200.
Title: Re: A1200 - insulate CF from touching rf shield?
Post by: paul1981 on April 20, 2014, 09:14:35 AM
Quote from: petercli;762889
When I install my CF card into my Amiga 1200 , do I need to place  some kind of insulation   between the CF card and the RF shield? (To avoid interference or a   short )
 Or is it ok the way it is?
 
 Here is a picture :
 https://plus.google.com/photos/104432096903073723714/albums/6004010865074430049

I'd secure it with velcro personally (it will insulate it too as it will be slightly raised from the shield). Even a small square of the stuff secures 2.5" hard drives. To think there could be something loose in my Amiga and 'flapping' around would drive me nuts! Please secure it...I may not get any sleep tonight unless you do!
Title: Re: A1200 - insulate CF from touching rf shield?
Post by: NovaCoder on April 20, 2014, 09:26:15 AM
There's a fair simpler solution which I'm surprised nobody has mentioned, just introduce the RF shield to your nearest waste disposal bin....job done.


:)
Title: Re: A1200 - insulate CF from touching rf shield?
Post by: ElPolloDiabl on April 20, 2014, 09:36:59 AM
Both are for carrying ground? As long as it is not banging up and down you should be fine.
Title: Re: A1200 - insulate CF from touching rf shield?
Post by: danwood on April 20, 2014, 01:11:30 PM
Some CF Card adapters have exposed pins on the underside of the board, like this

(http://thydzik.com/images/cheap-ssd-with-compact-flash-to-ide-adapter.jpg)

So definitely a wise idea to insulate them, having the IDE pins making contact with the shielding or anywhere on the Amiga's motherboard will not be pretty.  As suggested above, I use insulating tape.
Title: Re: A1200 - insulate CF from touching rf shield?
Post by: Coltch on April 20, 2014, 01:40:28 PM
RF shield...what's that
Title: Re: A1200 - insulate CF from touching rf shield?
Post by: danwood on April 20, 2014, 02:19:34 PM
Quote from: Coltch;762975
RF shield...what's that


Out of the factory Commodore covered the Amiga's motherboards with a metal shield, to comply with FCC interference laws iirc.  

Most Amiga users have removed them over time as they added upgrades, so if you bought a used system it probably doesn't have one any more, but they looked like this (CD32)

(http://i294.photobucket.com/albums/mm105/fitzsteve/Amiga/P1020189_zps181ebe59.jpg)

Great for slicing fingers on as well!
Title: Re: A1200 - insulate CF from touching rf shield?
Post by: Coltch on April 21, 2014, 12:13:30 AM
I forgot to add the sarcasm tag to my comment, the RF shields from my A1200's are sat in a cupboard.
Title: Re: A1200 - insulate CF from touching rf shield?
Post by: gertsy on April 21, 2014, 09:50:23 AM
Quote from: Coltch;763000
I forgot to add the sarcasm tag to my comment, the RF shields from my A1200's are sat in a cupboard.


But now you Amiga can read your thoughts!
Title: Re: A1200 - insulate CF from touching rf shield?
Post by: paul1981 on April 21, 2014, 11:14:03 AM
I like my RF shields intact if possible. I have a heavily souped up A1200 and a shield is out of the question there however.
Just want to add that not all A600's come with upper RF shields to begin with, at least not all the ones I've come across in the UK.
People say they're not very effective anyway, but like someone else mentioned, with all the radiation zapping around in peoples homes these days it might protect the Amiga more than it protects FROM the Amiga. And also less radiation has to be a bonus as we're being zapped from all angles these days.