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Tips/Tricks/Products Used In Restoration


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#151 Scyzor OFFLINE  

Scyzor

    Space Invader

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  • Location:Mid Hudson Valley

Posted Fri Aug 18, 2017 8:03 PM

Is there any way to restore red ATARI badge on XE version? I'm looking to get it from a faded out state to closes red color as possible.



#152 Zap! OFFLINE  

Zap!

    Stargunner

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  • Location:Staten Island, New York

Posted Wed Nov 1, 2017 12:09 PM

Although I've never restored an Atari 8-bit computer (at least until Friday, when the 800XL arrives in the mail), I have restored many other systems, such as an Atari Mega and hard drive, Genesis, Turbo Grafx, Atari 1050 DD, many, many controllers, etc.

 

What I would like to say first is that "Goo Gone" has never been necessary with me. 91% or above peroxide gets off anything sticky if used correctly. Here's what I do to clean THE OUTSIDE ONLY (the inside is a whole new ballgame that can be detailed in another post):

 

1) Disassemble everything first. Take pictures so that you know exactly what goes where. This will help you tremendously.

 

2) After it is apart, make sure there are no electrical components still connected. If there are stickers, remove them with 91% or above peroxide. Pour it on top of the sticker and on a towel. Wipe until it's all off (and it will come all off). Now, put the casing it in the sink with the drain plug in. Make sure you're wearing white, or at the very least old clothing, because you may splash. Pour two cups of bleach (yes, bleach, don't listen to the naysayers, it brings out the best in coloring, while killing any and all possible germs) all over it. Wait two minutes, and fill with warm water and detergent, making sure the system is fully submerged. Let it sit for 30 minutes.

 

3) Get one of those scrub brushes with a handle, and pour some detergent on it. Now scrub, scrub, scrub! Get all of the cracks and crevices. Repeat on both sides.

 

4) Drain and rinse. If there are still scuff-marks, use Mr. Clean Magic Eraser. Rinse again.

 

5) Towel-dry as much as you can. Leave the system to dry in a dish rack until it is 100% dry. 

 

6) Put back together and enjoy.


Edited by Zap!, Wed Nov 1, 2017 12:11 PM.


#153 DrVenkman ONLINE  

DrVenkman

    River Patroller

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Posted Fri Nov 3, 2017 12:40 PM

What I would like to say first is that "Goo Gone" has never been necessary with me. 91% or above peroxide gets off anything sticky if used correctly.


I’ve seen you post this twice recently. Please tell me you mean 91% isopropyl alcohol, not peroxide! Those are two very different substances; in fact, I don’t think you can even buy peroxide of that purity without going straight to an industrial chemical supplier, and you’d probably need an environmental permit these days; that stuff is a hell of an oxidizer and can rust, corrode or outright burn almost anything it touches.

#154 Zap! OFFLINE  

Zap!

    Stargunner

  • 1,695 posts
  • Location:Staten Island, New York

Posted Fri Nov 3, 2017 8:24 PM

I’ve seen you post this twice recently. Please tell me you mean 91% isopropyl alcohol, not peroxide! Those are two very different substances; in fact, I don’t think you can even buy peroxide of that purity without going straight to an industrial chemical supplier, and you’d probably need an environmental permit these days; that stuff is a hell of an oxidizer and can rust, corrode or outright burn almost anything it touches.

 

I totally meant 91% isopropyl alcohol! Damn, don't know what I was thinking, at the time of those posts it had been a while since I restored! I wish I could edit it, but AA has a unique time limit for editing. Admin or mods, please edit it to alcohol for me!



#155 Scooter83 OFFLINE  

Scooter83

    Dragonstomper

  • 650 posts
  • Location:Northern NJ

Posted Fri Nov 10, 2017 3:11 AM

What is the best way to pop the keys off a xegs keyboard when retrobriting them. I heard of a key cap puller but is that the safest way ? Are the xegs keys harder to take off compared to the 800 and the xl line of computers?

#156 plazma OFFLINE  

plazma

    Combat Commando

  • 8 posts

Posted Fri Nov 10, 2017 3:59 AM

What is the best way to pop the keys off a xegs keyboard when retrobriting them. I heard of a key cap puller but is that the safest way ? Are the xegs keys harder to take off compared to the 800 and the xl line of computers?

Buy a cheap keycap puller from eBay. The long wire model works great. It pulls up do there is minimal stress to the plungers.b3d7120a5df3e4d15f8f365f93c47f17.jpg

#157 mechanerd OFFLINE  

mechanerd

    Star Raider

  • 96 posts

Posted Mon Dec 4, 2017 11:21 AM

Here's some tips right from the workbench where I used to repair electronics for Tandy Service back in 1992-1996.

Let the molecules do some of the work.
 

Plastic monitor case cleaner for smoker's stain.

 

1 part Windex, 1 part 409 cleaner.

  The 409 is a surfactant(soap) like no other for getting rid of oils, foods, cheeto crumbs, and tends to remove the nitrosamines that leach out of the plastic. Especially those yellowed white plastic cases on Apple monitors and Goldstar VGA plastic cases. If you rub it in hard enough or let it soak a few minutes, it can whiten like retrobrite peroxide.

You can also add a part of 99% isopropyl alcohol.  

You might need to rinse the resulting debris off with water or 70% alcohol after getting the q-tips out. 

 

Use Rain-X instead of pledge, it now works as a great fan and grill cleaner where airflow accumulates dust.

 

 

Add a low flow fan where hot areas are.  There are cheap 5V and 12V fans that can be operated on 5V for less noise.
Or, add a potentionmeter in the circuit to make the fan adjustable.

A lot of audiophiles at my electronics store would line a cabinet or rack of equipment with fans with grills or  filters. provides extra cooling tripling the lifespan the chips and hot parts.  I just retired and 8 year old PC motherboard that had plenty of airflow. Not because it electromechanically failed, but it was just plain to slow for today's software.

 

Put heat sinks on the ram and ICs. just in case and save the gold bonding wires from flexing to death from hot to cold cycling.  Even the 1970s ICs suffer from this.   Use aluminium or copper sheet to aluminium heat sinks. The chipsset IC heatsinks from dead IBM PC motherboards work great.

You can permanently glue heat sinks on instead of using clips with JBweld on the edges of the top of the chip and your favorite thermal transfer compound in the middle. Got a hot, funny shaped transistor that doesn't have a heatsink made for it?  Now you do.

 

Hot glue in a stick from  gun is available at any hardware store. It will adhere lose wires, and wire wrap mods, and is recommended for stabilizing those mods from breaking off at the solder joint. The older PC motherboards had them and it worked.  Its low density polyurethane, LDPE, and will adhere aluminium shielding to plastic with it being removable.  Heck the stuff comes in colors and does make a nice purple glow under UV leds. :}


Edited by mechanerd, Mon Dec 4, 2017 11:23 AM.


#158 _The Doctor__ ONLINE  

_The Doctor__

    Quadrunner

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Posted Tue Dec 5, 2017 5:52 PM



#159 Stephen OFFLINE  

Stephen

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Posted Tue Dec 5, 2017 6:10 PM

Thanks for that - I've been laughing for the past minute and it's been a terrible day.






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