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In Reply to: RE: Zalman HD160XT and Thermaltake DH102 cases powering posted by Bibo01 on September 29, 2010 at 00:31:42
On the Zalman case, the screen has two cables... the USB cable for the touchscreen layer and a standard 4-pin Molex peripheral cable (such as used to power an older non-SATA IDE harddrive).
The touchscreen layer needs 5v (and of course a ground) from the USB cable.
The screen uses the 12v and one of the grounds from the Molex peripheral cable.
The 4-pin cable pinout is 5v-ground-ground-12v and is described here:
http://pinouts.ru/Power/BigPower_pinout.shtml
I have a separate linear supply that generates unregulated 18v and provides regulated 12v and 5v on two separate Molex cables.
The Molex cable for 5v is used to provide power to the devices connected to the motherboard USB header (touchscreen layer & wireless mouse) as shown here:
http://www.cicsmemoryplayer.com/index.php?n=CMP.05Components
On this connector, I left the 12v pin out.
The Molex cable for 12v is used to provide power to the screen's Molex connector. On this connector, I left the 5v pin out.
Your screen likely needs 5v and 12v as above, but it sounds as though you have different feed points through the 24 pin extension cable and possibly the internal PCB. Does this sound right?
What are the connections like between the internal PCB and the screen?
Greg in Mississippi
Everything matters!
Follow Ups:
Thanks Greg.
You seem to contradict Mihaylov. He said - see below - that LCD monitor takes power from P24 Extension Cable. You're saying, from a standard 4-pin Molex peripheral cable.
Who is right?
Thermaltake's monitor takes power from P24 Extension cable with 4 wires (12V, 5VSB, G, 5V) and from USB cable (5V, for touchscreen layer).
I would need to find out if those 4 wire are all used by monitor and possibly its power consumption. For this last item it's probably similar to what you told me about Zalman's - ~700 mA.
Bibo,
I was talking about the cables coming directly out of the Zalman monitor... it only has a USB & a 4-pin Molex. The standard setup MAY use a takeoff from the ATX-24 extension to connect to the 4-pin Molex and provide 12v... I haven't used that extension cable at all, so can't answer there. But there are only those two cables and the 4-pin Molex only has the 12v and the two ground cables installed... the 5v pin is empty.
Sorry if I've confused things a bit here.
I can look at that ATX-24 extension cable when I get home tonight if Mihalov hasn't answered by then.
Greg in Mississippi
Everything matters!
Thanks Greg for your patience.
I am not sure that you are wrong, perhaps Mihaylov is and I am simply confused. :-)
From Zalman manual it seems that LCD is indeed powered through a Molex plug:
Furthermore, it seems that P24 Extension Cable is for PCB Standby control only:
If this is the "case", then compared to Zalman Thermaltake's design has centralized PCB AND monitor powering in its P25 Extension cable, including standby.
For further info and exact power consumption of Thermaltake's monitor, I sent an email to Thermaltake support.
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