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NEC PC Engine/TurboGrafx-16 Games/Consoles => Console Repair/Mod Center => Topic started by: Psycho Nulltard on 01/19/2013, 09:49 PM

Title: how necessary is the shielding?
Post by: Psycho Nulltard on 01/19/2013, 09:49 PM
So, I'm not what you would call a super experienced modder, but I'm handy enough and have some good tools at my disposal.  I've got this pipe dream of making a custom case out of transparent/translucent acrylic and incorporating all those features I wish the tg16 had @ launch (like 5x controller ports, svideo, etc...).  I'd love to have the PCB visible with some LED lighting, and though I'm pretty sure it would be OK to leave the shielding off I wanted to confirm with more experienced modders that antique consoles can indeed live without the excessive shielding.
Title: Re: how necessary is the shielding?
Post by: HercTNT on 01/19/2013, 11:37 PM
I have removed the rf shielding from Nintendo's, Sega's, etc and have never had an issue. Not sure that shielding is as important as it once was.
Title: Re: how necessary is the shielding?
Post by: drakewolfe on 01/20/2013, 12:39 AM
I think the shielding is just a FCC requirement here in the States, of all the Japanese and Hong Kong consoles I've worked on, they don't seem to have this out of the factory.
Title: Re: how necessary is the shielding?
Post by: esteban on 01/20/2013, 06:34 AM
Quote from: Nulltard on 01/19/2013, 09:49 PM(like 5x controller ports, svideo, etc...)
That's actually an intriguing situation/idea.

(1) PCE fans love the cute, tiny PCE.
(2) TG-16 is often mocked for "stretching" out the PCE (creating a surfboard).
(3) BUT, what if the original TG-16 have 5 controller ports built in?
(4) DAMN, THAT WOULD MAKE THE TG-16 LOOK RIDICULOUS...
(5) ...and thus your challenge awaits you :pcgs:
Title: Re: how necessary is the shielding?
Post by: turbokon on 01/20/2013, 10:11 AM
I usually end up having to remove the shield especially after modding the TE's just because there is no rooms for the all the mods I do to it, external controller mod, switchless region mod & LCD/comp vid out mod.
Title: Re: how necessary is the shielding?
Post by: TheClash603 on 01/20/2013, 11:22 AM
I am very excited to see this 5 controller port TG16.  Let's get it done!
Title: Re: how necessary is the shielding?
Post by: esteban on 01/20/2013, 12:20 PM
Quote from: TheClash603 on 01/20/2013, 11:22 AMI am very excited to see this 5 controller port TG16.  Let's get it done!
Seconded!
Title: Re: how necessary is the shielding?
Post by: Nec.Game.head on 01/21/2013, 12:57 PM
YOU CAN DO IT !! 5 PLAYER ACTION BOMBERMAN STYLES ALL DAY !!!
Title: Re: how necessary is the shielding?
Post by: Gogan on 01/21/2013, 07:45 PM
This sounds like a cool ass project! If I had anything to donate, you bet I would. Good luck!
Title: Re: how necessary is the shielding?
Post by: Duo_R on 01/21/2013, 08:03 PM
Thought of this before not difficult to do although its nice to have an extension cord on the turbo tap instead of each controller needing one.
Title: Re: how necessary is the shielding?
Post by: GohanX on 01/23/2013, 10:25 PM
I've removed the shield as well with no ill effects. The only system I've messed with where RF shielding was necessary was the original famicom, where I had to add MORE shielding to prevent interference when I AV modded it.
Title: Re: how necessary is the shielding?
Post by: ApolloBoy on 01/23/2013, 11:28 PM
I think I've removed the RF shielding in every system of mine that had them, they're a complete nuisance IMO since the shielding adds unnecessary weight and gets in the way of me doing repairs or mods.
Title: Re: how necessary is the shielding?
Post by: NightWolve on 01/23/2013, 11:38 PM
I had this question when I was doing a cap replacement that thankfully resurrected my dead TurboExpress. I could've bought the bigger, cheaper, standard aluminum caps but instead I bought the exact SMD replacements, so it was no problem to put the RF shield back on, but then I thought if I had another problem in the future, I don't want the inconvenience of having to take it off again, thus I got rid of it anyway... Apart of you says that the engineers put it there for a good reason, so you feel you should respect that, but then there is the fact that US/FCC requires it for electronic devices sold here meaning it probably wasn't the engineers' choice. So what does the FCC know that other countries don't ? I guess I'm interested in what JKM mentions, that he got rid of interference by adding more of it. Would like to know how this "interference" manifested itself (wavy lines in the video or something, etc. ?).
Title: Re: how necessary is the shielding?
Post by: bacteria on 01/28/2013, 05:32 PM
In my Project Unity I have many console systems, bare boards, all quite close to each other - no issues at all. So yes, you can remove the shielding no issues.
Title: Re: how necessary is the shielding?
Post by: bacteria on 01/29/2013, 03:28 AM
Cool!

I haven't frequented this forum for a while now, although will do at some point. I like the TurboGrafx; made a portable with one years ago, will also incorporate one into my Project Unity, and also a future handheld multi-system. Then i'll be back on this forum again for a bit!

There are two things in a gaming console that does "need" shielding for is the RF box as that generates interference, so if you remove it (modern televisions don't like RF anymore anyway so remove it) you're fine; the other thing (which isn't relevant to the Turbografx or PCengine) is if the console has a transformer inside, like for example a PS2, DreamCast or PS1 (original), as transformers if unregulated can kick out a lot of magnetic field/interference. I had that when I tried to use a PS2 transformer for my Unity project, it affected all systems within about 8 inches or so, especially if they used motors (eg CD drives); those sort of systems need shielding unless you remove the transformer and use other regulators or external supply.
Title: Re: how necessary is the shielding?
Post by: soop on 01/29/2013, 08:35 AM
Wow, Bacteria!

I've also used a lot of your guides, so thanks a lot :)  I like the Li-Ion battery guide on instructables.
Title: Re: how necessary is the shielding?
Post by: bacteria on 01/29/2013, 10:22 AM
When i'm about to mod my TurboGrafx and PCengine boards, i'll be more active here for a while, catching up on recent threads to see if there are things I need to research.

On the subject of shielding, i've opened up a lot of consoles, and every one has shielding, some can be a hassle to remove too.

I think originally shielding was so prevalent as interference could happen if you put one system on top of another, especially regards RF units. Cheaper for companies to install shielding than having to deal with product recall I guess. Gadgets these days still tend to often have shielding, although less common.

Nulltard - you can make a vacuum forming table for next to nothing, what costs though are the plastic sheets, and whatever you use for a mold.
Title: Re: how necessary is the shielding?
Post by: HercTNT on 01/29/2013, 01:22 PM
Bacteria, good to see you here, love your work.
Title: Re: how necessary is the shielding?
Post by: PCEngineHell on 01/29/2013, 01:32 PM
Quote from: bacteria on 01/29/2013, 10:22 AMNulltard - you can make a vacuum forming table for next to nothing, what costs though are the plastic sheets, and whatever you use for a mold.
http://youtu.be/maH5Ech0wK8

and

http://www.youtube.com/watch?annotation_id=annotation_55416&feature=iv&src_vid=maH5Ech0wK8&v=5fJOhrt001c
Title: Re: how necessary is the shielding?
Post by: bacteria on 01/29/2013, 04:20 PM
Thanks for the warm welcome guys, appreciated; i've been a member here for quite a while (2009) but not posted a lot here I know. I'll have to check out more threads here and see if I can participate more!  ;o)

The TurboGrafx is one of my favourite consoles, has some great games after all. I've not played my TurboGrafx portable (made that quite a while back) for quite a long time, will have to turn it on again!
Title: Re: how necessary is the shielding?
Post by: Duo_R on 02/02/2013, 09:52 PM
I want to make a vacuum forming table, someday....
Title: Re: how necessary is the shielding?
Post by: esteban on 02/03/2013, 04:49 AM
Quote from: bacteria on 01/29/2013, 04:20 PMI've not played my TurboGrafx portable (made that quite a while back) for quite a long time, will have to turn it on again!
Aha! I remember the old threads where you were slowly building le portable. Good to see you check back in, YOU NEED TO PLAY...NOW. (https://junk.tg-16.com/images/pcg0.png)

YOUR MISSION, SHOULD YOU CHOOSE TO ACCEPT IT: I hereby commission you to create a TG-16/PCE console with 5 controller ports built-in (a built-in TurboTap).

(https://junk.tg-16.com/images/pcg0.png)

Title: Re: how necessary is the shielding?
Post by: HercTNT on 02/04/2013, 12:31 AM
Quote from: esteban on 02/03/2013, 04:49 AM
Quote from: bacteria on 01/29/2013, 04:20 PMI've not played my TurboGrafx portable (made that quite a while back) for quite a long time, will have to turn it on again!
Aha! I remember the old threads where you were slowly building le portable. Good to see you check back in, YOU NEED TO PLAY...NOW. (https://junk.tg-16.com/images/pcg0.png)

YOUR MISSION, SHOULD YOU CHOOSE TO ACCEPT IT: I hereby commission you to create a TG-16/PCE console with a fully functioning wet bar and disco ball.

(https://junk.tg-16.com/images/pcg0.png)
Fixed for ya ;)
Title: Re: how necessary is the shielding?
Post by: roflmao on 02/04/2013, 01:11 PM
I'd like to see either of those mods done. :D