Radius SpigotPro AV...help me identify this component

KennyPowers

Active Tinkerer
Jun 27, 2022
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I have a Radius SpigotPro AV card that was installed in a battery-bombed Quadra 660AV. The card looks OK except for a single oscillator who's casing is completely corroded:

PXL_20220717_175936699.jpg PXL_20220717_175948732.jpg PXL_20220717_184311425.jpg

I'm trying to identify that oscillator so I can replace it. I tried removing the corrosion with no luck. The only photo I've been able to find of this card online is this one:

Spigot-Pro-AV-2.gif

It's not high enough resolution to read the text on the oscillator (it's an Abracon...maybe 27-something Mhz?). Does anyone have one of these cards and can identify it for me?
 
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Kai Robinson

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27.000MHz oscillator - it's the input clock for the Zoran ZR36050 JPEG Encoder chip.

There's only two valid input values for the input clock on that chip, 21.000 MHz or 27.000 MHz.
 
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KennyPowers

Active Tinkerer
Jun 27, 2022
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27.000MHz oscillator - it's the input clock for the Zoran ZR36050 JPEG Encoder chip.

There's only two valid input values for the input clock on that chip, 21.000 MHz or 27.000 MHz.
Thanks...figures both mouser and digikey are out of them.
 

Kai Robinson

TinkerDifferent Board President 2023
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I've found eBay to be a decent supplier of components that are out of stock elsewhere - for things like passive components, there's probably not much difference and half the time is overstock from someone buying off mouser in bulk :)
 

KennyPowers

Active Tinkerer
Jun 27, 2022
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Working in a machine?

Not yet :) I only have one NuBus mac right now, and I just started working on it. The cap and IC under that oscillator have some discoloration, so they're questionable. I'll try it when I get this IIci fixed up. Just recapped the PSU, and it boots, but the board needs recapping. The soft-power-on circuit has some leaky cap damage (luckily it just starts up when power is applied).