switch bank connector

JUst bought a new ATX computer case with Power Supply.The leads coming out to be connected to the switch bank connector are not labeled.On the Mobo you should connect one of those leads to the "Power Switch" .Which lead is it? Are those leads color coded?

Jerry

 

Hi.

I wouldn't trust color coded wires even if they are. The 4-pin wide plug is the speaker plug. There's two that are momentary contact switches, the on/off and reset switches. You can use an ohm meter across the end plug pins to find out which one is the on/off and the reset (or a flashlight bulb and a battery).

There should be a power led and a hdd (hard disk drive) led. After you get everything up and running, plug either one into either the power or hdd led pins until one lights up and stays on. Thats the power led. Plug the other one into the hdd led pins. That should do it. You'll probably have one or two pairs of wires left over. They might not be needed on your particular motherboard.

Keep in mind that most hdd leds light up continuously on bootup and change to reflect hdd access after the system starts to load. Don't confuse that with a continuous power led.

Hope this helps.

 

Hi ,giles,

One question was not answered: Which lead is connected to the Power Switch connector on the Mobo?In looking at the computer Power button,all the wires are connected to the Power Supply.Here is the Setup in my computer case:

Blk-Rd from one of the power supply connectors(no label)
(these wires are wrapped around those leads)
Blk-Rd from speaker(no label)

Blk-Red labeled: "Reset switch "

GR-W from LED (no label)

Y-W from LED (no label)

O-W from LED


Where is the power switch lead? How does the computer start?


Jerry

 

Hi.

There is no actual on/off switch. Nothing from the case front goes to the power supply. The old AT cases were like that but not the new ATX cases. One of those leads with a two pin plug on the end plugs into the "pow-on" or "power" on the strip. It should be labeled on the motherboard or shown in the manual. This pin lead is the on/off switch on the front of the case. Its just a momentary switch that shorts those two pins on the strip on the motherboard. Thats what starts the computer. It throws a relay in the power supply and power up it does. Read my other reply a couple of times and you'll get it. Post back if you're still not sure. I'm changing a snow-blower motor but I'm on every now and then. (It's snowing again.)

 

startup problem

H,giles,

I found the problem:the power supply connectors were not plugged correctly.Computer starts but there is no screen ,but a continuous beep that stops.Please note that the following items are not italled yet:
OS
HD
FD
CD-rom.
Keyboard and mouse are connected.The keyboard lights flip once then go out.A brand new 128 RAM memory is installed in the first slot.CPU fan and power supply fan are running.

Jerry

 

Hi.

I think you have a memory problem. Pull and reseat the memory. If that doesn't work, try putting it in another slot.