VOGONS


First post, by cyberluke

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Hi, I bought Optiplex 433/LE and it has missing both buffer and cache.

I got 15ns cache and for buffer it should be TTL, but 74F244N is not working. No pc speaker noise, only hdd led goes on and screen will not turn on. I also tried latch version 74F643 os=r something like that.

Does anyone know what should come there?

There is one ebay seller from Bulgaria and he refuse to send me photo, he has it including the buffers. Last two months Im only buying various parts and it is not working.

I would be also curious if you could out isa vlb riser from IBM or if it is possible to make vlb riser for this board like DIY.

Here are my photos.

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Reply 1 of 2, by cyberluke

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Adding more photos, you can see 74F245 is onboard and wired to these two buffers.

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