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Hardcano 12 Chip ID help

Hi, Just wondering if anyone can ID this chip. Its on a Thermaltake Hardcano 12 Fan speed controller for PC cooling There are 4 chips to control 4 fans, only 2 fan channels are now working.

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As you might see from the photo, pins 1-3 are joined and are variable DC output to the 12vdc fan, pin 4 has a variable width pulse in of 8v peak on a good channel but 2v peak one duff channel, 8v on the other duff channel (No output on 1-3). Pins 7-8 are joined and have 12VDC rail, pins 5-6 have traces disappearing under the board which I can't disassemble as I'm going to RMA it but want to see if its even worth getting another as it only lasted an hour before failing.

It was driving 4xThermaltake 120mm Blue LED fans. There are no real specs on its drive ability, but I assume its capable of driving case fans.

TIA JC

Reply to
Archon
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I have no idea about the ICs, but what camer did you use for the picture of the board?

That's an extremely clear pic, even the texture in the epoxy is sharp.

-- Cheers, WB .............

Reply to
Wild_Bill

Thats my trusty old Olympus C-4000 Zoom on closeup mode.

JC

Reply to
Archon

Most 3-5 megapix cameras with good lighting, manual focus and a macro mode can take those kind of pics and even better. Doesn't hurt to have a camera with a 37mm > lens and multiple CCDs. I get great closeups with my Panasonic MiniDV camera in the still pix/manaul/macro mode because of the 37mm lens and three CDD pickup + OIS and a tripod.

As far as the IC goes good luck. Maybe check some junk motherboards of similar attributes for a pull.

Reply to
Meat Plow

Agreed, but I've been fairly disappointed on closeups with more recent cameras.

Anyways, the chip I'm thinking is a variety of the Agilent - HCPL-3120 but the pin functions don't match.

I was hoping to find a spec sheet just to see why this failed and if its up to the job, all the reviews say its good so maybe this was a bad one.

JC

Reply to
Archon

The depth-of-field is extremely shallow, so I'd guess that he's used a DSLR with a very good lens, shot wide open.

--
    W
  . | ,. w ,   "Some people are alive only because
   \\|/  \\|/     it is illegal to kill them."    Perna condita delenda est
---^----^---------------------------------------------------------------
Reply to
Bob Larter

Well if you haven't any idea of the power sinking capabilities of the chip maybe 4x120mm lighted fansare too much especially if the LEDs power from the fan source but even if that's not the case it may still be too much. Without knowing the capabilities of each fan source as to speed control maximum wattage it's hard to say yes or no to this one.

Reply to
Meat Plow

This is the device in question, be good if they gave more technical specs

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JC

Reply to
Archon

Oh are you trying to power that from a fan source? Seems more logical to plug that into the PSU.

Reply to
Meat Plow

working.

Actually that was the wrong device, its this one :

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Of course I'm plugging it into a standard 12/5 rail supply on the PC PSU as it was designed.

Anyway I've RMA'd it with a query as to whether it is capable of running LED fans, pretty crap if it can't. It would be interesting to figure out those ic's, I'm guessing opto coupled IGBT drivers of some sort, but can't find any commercial part with that kind of pinout and I don't know if there is anything on the other side of the board with more power handling. I might be able to re-engineer the outputs if the replacement dies. The unit is pretty cool looking and could do the job if designed properly.

JC

Reply to
Archon

working.

Ok so far I'm with you.

Reply to
Meat Plow

working.

Ok I'm with you so far.

That little 8 pin DIP chip may control the fans but not by itself. If it is of newer design it depends on temp senors from the chassis, PSU, CPU etc... meaning the voltages will vary. I'm not sure I understand what you want to end up with here.

You have a bay mounted hi-tech fan powered by the PSU. In addition you want to mount 4 120mm fans using voltages supplied by the motherboard?

Reply to
Meat Plow

The soldering visible in the shot is really lousy. Almost every joint looks dry. I'd resolder everything.

--
    W
  . | ,. w ,   "Some people are alive only because
   \\|/  \\|/     it is illegal to kill them."    Perna condita delenda est
---^----^---------------------------------------------------------------
Reply to
Bob Larter

So this isn't a chip on a motherboard like I originally assumed. It's inside the bay device. And yes the solder job is horrible. Looks as though that chip has been refitted.

Reply to
Meat Plow

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