Re: Insides of a Widget disk

Very cool! Great pictures: I've never seen the inside of a Widget before, and this will be helpful for future repairs. Thanks for uploading! -Tom

On Friday, January 31, 2014 1:30:36 PM UTC-5, compu_85 wrote:
>
> Figured this would be interesting to the group:
>
> Several years ago I picked up an "as is" Widget disk from eBay. I didn't
> pay much, and wasn't upset when it made horrible grinding noises when
> powered up.
>
> Last night I was fiddling with my Lisa again and recalled a post saying
> there was a glass graticule inside the drive. I wanted to see how this was
> arranged, so I opened up the dead disk:
>
>
> https://lh5.googleusercontent.com/-ozPp5nVpBZY/UuvnZSSwXfI/AAAAAAAAD_k/-Ims8n5D5H4/s1024/P19189500.jpg
>
> You can see that the head arm is attached directly to the voice coil
> actuator, and the graticule is mounted in the upper right. Here is a closer
> picture:
>
>
> https://lh5.googleusercontent.com/-5y2pirtYJLI/UuvnaAIV9ZI/AAAAAAAAD_I/wOEuZMGOmQs/s1024/P19189901.jpg
>
> If you look closely you will see a corner is chipped off of the glass. I
> believe that is why this drive failed... glass chunks got under the lower
> head and it scratched all the disk surface off. I had a peek with a
> fibrescope and it wasn't pretty... entire sections of the platter were
> ground off. In this picture you can see some of the shiny flakes spread
> around inside the disk:
>
>
> https://lh5.googleusercontent.com/-3SsF9HMp14I/Uuvnb27KhMI/AAAAAAAAD_U/tkSInzYJ4zQ/s1024/P19190503.jpg
>
> Thanks,
>
> --
> Jason Perkins
>
>

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