Deyellowing Question

[Famicom3DS]

For de-yellowing the white plastic, does 3% hydrogen peroxide ruin the front Family Computer label without masking/scotch tape?

[muckyfingers]

Dont' chance it, just put some masking tape on it and use a razor blade/exacto knife to carefully remove the excess tape.

[2A03]

You'll be fine, hydrogen peroxide won't hurt it at all. You can even use 40 volume developer which is far stronger and it doesn't harm it.

[zmaster18]

When I did it, it was ok on the metallic decals. However, when I added oxy clean into the solutuon, the FAMILY COMPUTER part got oxidized. Also, when I touched the TV/GAME, AC IN CHANNEL 1/2 sticker on the back with my finger, the black ink came off. When I did this treatment, my famicom didn't get any whiter however. I believe either my console was just not able to get whiter or all the plastics used for Famicom are just impossible to whiten. I have had success with the Super Famicom though, I was able to get 5 of them to original color.

[Famicom3DS]

Thanks for the replys, everyone.

I got it a lot less yellow and I went ahead and added some Oxi-Clean when I was de-yellowing it. Sadly, I cut a bit of plastic around the label, Oxi-Clean oxidated it  a little and a small bit of red ink on it but all are hardly noticeable.

I'm comfortable with it now, and despite what Oxi-Clean did to the label it got rid of all of the bulit up grime that I couldn't get out by scrubbing.

It's not totally white but it looks like it's aged more than fine wine rather than being painted yellow and I'm satisfied even though I'll probably go and get some higher volume peroxide some time soon to make it more white.

here's a comparison of how it was then and now.

[zmaster18]

My results were similar, it only got a bit white and then whatever else I did did nothing.

[muckyfingers]

Here's mine after about 9 hours of retrobright and a UV lamp.

Click for full resolution

[Famicom3DS]

Looks great, mucky.

May I ask how to remove the front metallic label?

[muckyfingers]

Looks great, mucky.

May I ask how to remove the front metallic label?

Carefully with a heatgun, then carefully put back on with superglue.

[fredJ]

Last two famicoms I tried this with, I broke the red moving thing off, it has small tabs that snap off way too easily.
Next time I'll just leave it on, it doesn't fade so badly.

The front sticker I removed with isopropanol, carefully making sure not to bend it too much...

Of course I haven't been able to do any brightening since october because of the Swedish winter.