15 replies to this topic

[19Echo]

was looking for an old thread about erasing eproms and i seem to remember someone buying something on ebay that was meant for toothbrushes and used the uv to erase the eproms? can someone point me in the right direction on this

[kheffington]

Phillips Sonicare toothbrushes come with a UV sanitizer that you stick the tooth brush attachment in.

[kheffington]

http://www.ebay.com/...3#ht_1172wt_954

[kheffington]

Eprom erasers are cheaper though.

http://www.ebay.com/...#ht_4109wt_1187

Edited by kheffington, Sat Mar 3, 2012 8:17 PM.

[19Echo]

yeah, phillips is kind of expensive and i saw the ones from hong kong, just didnt want to wait till the end of the world to receive it

basically i'm just looking at any type of  toothbrush sanitizer right ?

[kheffington]

Any type of UV light generator.

[AtariGeezer]

19Echo, on Sat Mar 3, 2012 8:05 PM, said:

was looking for an old thread about erasing eproms and i seem to remember someone buying something on ebay that was meant for toothbrushes and used the uv to erase the eproms? can someone point me in the right direction on this

That was me and I bought one like this:
eBay Auction -- Item Number: 260968147701

Jay

[19Echo]

AtariGeezer, on Sat Mar 3, 2012 8:28 PM, said:

19Echo, on Sat Mar 3, 2012 8:05 PM, said:

was looking for an old thread about erasing eproms and i seem to remember someone buying something on ebay that was meant for toothbrushes and used the uv to erase the eproms? can someone point me in the right direction on this

That was me and I bought one like this:
eBay Auction -- Item Number: 260968147701

Jay

yea that was it.

you da man

thank you sir!

[AtariGeezer]

Anytime

[atari8warez]

I've just got a toothbrush sanitizer and after 6 cycles (of about 4 mins each) the EPROM is finally erased. A longer cycle time or an adjustable timer would have been great but for only $11 and free shipping I would say it does a great job, and I can sanitize my toothbrushes too (which I suspect will be more frequently done compared to erasing EPROMS)

[AtariGeezer]

It helps to place the window on the eprom as close as possible to the light, it only takes 2-3 cycles that way
There is a mod for these that adds a capacitor to keep them on longer.

Edited by AtariGeezer, Tue Mar 26, 2013 7:33 PM.

[atari8warez]

Wow, great... I sorta figured that I needed to keep the EPROM closer to the light after about 4 cycles, so for the last 2 cycles I rested the chip windows side  down right over the light, but this mod is great, I shell implement that too.  Does the capacitor rating affect the length of the time it remains ON?

Thanks for the information....

EDIT: Also my PCB traces look different than yours, which pins on the timer chip (HCF4541BE) do you connect the capacitor to, or does it connect somewhere else?

Edited by atari8warez, Wed Mar 27, 2013 4:50 PM.

[AtariGeezer]

I haven't done the mod yet, those pics are what I found over a year ago, but can't find the site where it documented the mod.
A 2000 uf cap would keep the light on a bit longer...

[atari8warez]

Oh ok, I can't find the site either, I opened mine and the first thing that struck me is how thin and fragile the wires inside the case are and I guess my second mod would be to replace those wires with thicker ones and redo all solder points as some are barely holding-up . Definitely a $10 job...

[5-11under]

atari8warez, on Tue Mar 26, 2013 3:12 PM, said:

I've just got a toothbrush sanitizer and after 6 cycles (of about 4 mins each) the EPROM is finally erased. A longer cycle time or an adjustable timer would have been great but for only $11 and free shipping I would say it does a great job, and I can sanitize my toothbrushes too (which I suspect will be more frequently done compared to erasing EPROMS)

What I've learned from this is that you can sanitize your toothbrush even faster or better with an EPROM eraser.

[atari8warez]

5-11under, on Thu Mar 28, 2013 9:52 AM, said:

What I've learned from this is that you can sanitize your toothbrush even faster or better with an EPROM eraser.

I am not sure if germs have the same longevity as the contents of an EPROM, so I can't tell. I simply suppose that 4 mins of cycle time is enough to kill the germs but not so to erase the EPROM, that is if the designer of this sanitizer knew what he was doing.  Overkilling the germs will probably not make your toothbrush cleaner