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What causes prototypes to die I hear it more so with prototypes then retail

May 19 at 8:38:37 PM
romiked2689 (39)
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< El Ripper >
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Any idea why prototypes have this problem. Or is it simply because they are mostly built by hand 

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Edited: 05/19/2017 at 08:39 PM by romiked2689

May 19 at 9:16:43 PM
Viper0hr (76)
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(Ryan R) < Ridley Wrangler >
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Most of the time I'm sure someone checks them out and fries the EROm chips with UV light.

May 19 at 9:23:07 PM
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mattbep (104)
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(Former Scramble Champion) < King Solomon >
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Originally posted by: Viper0hr

Most of the time I'm sure someone checks them out and fries the EROm chips with UV light.

I am no expert, but I think you're on the right track. It's not instant, but prolonged exposure will do that. Given that we're talking about 30 year old carts, it's not difficult to ruin the chips. 

This is why you see exposed chips covered with stickers, often with the name of the game and the date written on them. 

May 19 at 9:39:58 PM
Ichinisan (3)
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< Lolo Lord >
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The initial flipped bits would likely corrupt the game data such that it still plays and it's not obvious there's anything wrong. Some people might incorrectly assume that most of the game's glitches are "just because it's an unfinished game."

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Killer Instinct Gold (N64)
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Edited: 05/19/2017 at 09:41 PM by Ichinisan

May 20 at 12:54:12 AM
introless (23)
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(random guy) < Eggplant Wizard >
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And, of course, bit rot. EPROMs/CD-Rs weren't meant for permanent storage.

May 20 at 1:16:20 AM
Jeckidy (46)
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(Jeckidy Hydelow) < Meka Chicken >
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Where the hell have you been, Miles? I tried contacting you multiple times.

May 20 at 11:27:26 AM
Xerxes (18)
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(Xerxes Dole) < Meka Chicken >
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Originally posted by: romiked2689

Any idea why prototypes have this problem. Or is it simply because they are mostly built by hand 


You often read that "Prototypes will all be dead in a few years." This is hyperbole. Most NES prototypes are made with EPROMs. EPROMs do not last forever. I think they are rated for 15 years. People who deal with them on a regular basis, however, will tell you that they last much longer. For example there are arcade cabinets running with more than a dozen EPROMs from 3 or 4 decades ago. The process by witch they slowly corrupt is called bit rot. Bit rot will be a problem eventually. That is why preservation is so important to some of us.

I have herd of prototypes with loose solder joints. In a lot of cases that can be repaired by a pro with a soldering iron. 

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