Orientation of clock crystal on GVP 060 accelerator for A2000

[mbrantley]

Got a little problem. I just acquired a GVP TekMagic 060 accelerator from a fellow Amigan here. It fits the 2000. In transit, the power lead to the cooling fan moved around a bit and plucked the clock crystal from its socket. I was able to straighten the four bent legs but now my problem is not knowing how to orient the clock crystal when I reinsert. There is a notch at one end of the socket on the board. However, all the text on top of the clock crystal has worn away, and I see no way to visually determine which way to plug it in. I've got a 50-50 shot of getting it right. Do I risk damaging the accelerator by guessing wrong?

Alternatively, where can I buy a replacement clock crystal so there will be no guesswork?

Thanks!

[Bazzaq]

There is a photo here> http://amiga.resource.cx/photos/tekmagic2060,TekMagic060

http://amiga.resource.cx/gallery/TekMagic060.jpg

[mbrantley]

That's a good, high-resolution photo. There is almost none of the text left on the top of my crystal -- not enough even to tell which way is upside for the letters. But I see in that photo that the third line of text is much longer than the first. I'll look when I get home tonight. Maybe there is enough black specks of letter remnants left to see which end of the crystal had the longest line of text. Thanks!

[Bazzaq]

Hi, using zoom function you can read the text, mostly..

something like, ho-12c, 25.000mhz, hosonic2d

top line towards the cpu.

[meega]

You might also find that one corner (the one nearest the dot) is more square or pointy than the other three.

[mbrantley]

Thanks. I'll look closely to see if one corner is different. And to be clear to all, on my clock crystal the letters are rubbed off, with only a speck or two of black paint left.

[rkauer]

 I agree with Meega: any square crystal have a sharper corner where the pin #1 is.

 Just look carefully.

[mbrantley]

Yes, I see the square corner now -- in the photo and in real life. Thanks, folks.

Now, I think I'm getting to the point soon when I will need bifocals.

[mbrantley]

Last update: Got around to installing the 060 board in the 2000 tonight. The old girl now has a 50mhz 68060 under the hood and 128MB of fastram. For a classic Amiga, she's got some oomph. Also in there is a Video Toaster card and a Personal Animation Recorder card. It's my retro animation station.