Owner of three blown POST Diagnostic Cards requires your h..

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Electronic Components wrote:
> Owner of three blown post diagnostic cards requires your help...
> Problem is that China Inc. actually went through the trouble
> to grind off the chip part numbers :-(
> Though "debug cards" can now be had for as low as $10, there
> is the desire to refine one's surfacemount soldering skills
> and to replace what looks like 10 cent TTL glue logic.
>
> Here is a picture of the same card I have, but with part numbers:
> http://cgi.ebay.com/ws/eBayISAPI.d [...] egory=1244
>
> All the cards sold now look like they retain their chip part
> numbers. Most of the inexpensive PCI-ISA post cards from the
> various vendors appear to use the same generic circuit. An
> observation based mainly on:
> - common features
> - pdf manual downloads on vendor sites
> - chip count plus the same number of 14, 16 and 20 pin chips
> The only difference being variations in layout and quality.
>
> If someone purchased this type of card with chip part numbers,
> could you either post or e-mail the numbers on the following
> ten chips.
>
> U2 -
> U3 - (looks like a 74LS02 in the above picture link)
> U4 -
> U5 - (looks like it reads 74LS04)
> U6 -
> U7 -
> U8 - (looks like GAL16V8)
> U9 - (looks like GAL16V8)
> U11 -
> U12 - (looks like 74F74)
>
> Even better would be if someone has a schematic diagram or went
> through the bother to trace one out. If the GAL16V8 chips are blown
> one would be SOL, but there is glue logic between them and the bus.

Can't help with the chip numbers, but I note that my PCI-only diag card
has 3 x GAL16V8D only (socketed), no TTL glue at all - which suggests
it's only needed on the ISA side.

> As they say... Strike three and you're out...