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foone🏳️‍⚧️
@Foone
Replying to
@Foone
You can see from the side that it's very thick. And apparently it's a Motorola MHW1222, which is... a "CATV WIDEBAND AMPLIFIER"
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foone🏳️‍⚧️
@Foone
My god, I just realized there are no bodge wires, on the back or the front. They finally got one board right the first time!
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foone🏳️‍⚧️
@Foone
So it turns out this thing was supposed to be a 6-slot enclosure, but to put the fan in they just snipped off some of the slots. huh.
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foone🏳️‍⚧️
@Foone
I pulled off the backplane to see if there was anything interesting underneath or on the backside. That component I could only mostly see is an RFI filter, presumably because a noisy AC power input would result in noisy video out
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foone🏳️‍⚧️
@Foone
I also noticed that each of the slots on the backplane is labeled as to which sub-board plugs into them.
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foone🏳️‍⚧️
@Foone
The back of the board isn't super interesting. Some bodged components plus it becoming very clear that they manually hacksawed the notch for that RFI filter
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foone🏳️‍⚧️
@Foone
There's a big scrape here which kinda looks like someone needed to cut these traces? but it doesn't go all the way across them so I don't think this actually cut them. This was probably just accidental but didn't break them, so fuck it, ship it.
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foone🏳️‍⚧️
@Foone
OK, this is definitely not ISA. but it's... ALMOST ISA. I think they may have started as testing this on a standard ISA backplane?
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foone🏳️‍⚧️
@Foone
See you can look at the ISA slots and go hey, there's ground on B1, +5V on B3, +12v on B9... that sound exactly like ISA! Except there's 24V on B5 which is NO
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