Member Avatar for kennjame62

Hi, and thanks to all to can help.
To make the story short, I have a Dell Latitude, and the power button stoppen working. Upon inspection, I found that the power button board itself was broken. This was confirmed because none of the caps lights, etc didn't light up when the computer did work, so it was dying. Anyway, now the computer won't turn on!!!! Is there anyway to bypass the main switch on the Power Cirucit board itself?? I know I can get a new one, but it won't come soon enough! Once I get it on, I can keep it in standby.

I do know that if I remove the power circuit board, I can see that it connects to the motherboard itself through a plug. Is there any way to use this to start the computer???

Please help, and thanks to anyone who replies immediately!

{Ps- I am good at computers, but am not great inside the computer, but cam take certain things apart}.

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Short practical note: the Latitude D610 uses a small power-button daughterboard that plugs into a header on the motherboard. If only the microswitch is faulty the objective is simply to reproduce the momentary contact that the switch makes at the motherboard header. Building on 's suggestion and 's wiring-diagram advice, below is a safer, stepwise method to identify the correct pins and power the machine without guessing.

First, map the switch pins with the board removed and all power sources disconnected. Place the power board on an insulating surface, locate the switch pads, and use a multimeter in continuity mode to probe which header pins on the connector tie back to those pads. That identifies the two signal contacts for the momentary switch and avoids touching power rails or LEDs that may share the same connector.

Next, create a controlled momentary connection. With a short insulated jumper or a small momentary pushbutton wired only to the two identified pins, reconnect AC (or battery) and briefly make contact to simulate a press. A temporary external pushbutton or thin insulated wire with only the ends exposed is far safer than poking with metal tools. Alternatively, solder thin leads to the switch pads on the daughterboard and attach an external momentary switch — do not solder a permanent bridge across the switch pads.

Warnings and alternatives: if the connector has more than two function pins, or mapping is unclear, stop and consult the D610 service manual or use a replacement donor board. Electrostatic discharge precautions, working with power off while mapping, and avoiding shorts to nearby pins are essential — mistakes can damage the motherboard. If uncomfortable with these steps, obtaining a replacement power-board or professional repair is the lowest-risk option.

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Member Avatar for cguan_77

if you love to do experiments at your own risk...and you're 101% sure that it's your power board button was broken..

if you're power board button is using SPST (single pole single throw) switch..you can just short the two terminals with a tweezer and it should be okay, if it's only the button..

and if your power board button is using a SPDT, DPST switch then it's another story... but normally power board button is not that easy to broke...

better send it to service center of your manufacturer and be ready for some big bucks of charges..LOL :)

Member Avatar for kennjame62

what is spst? There are no wires from my power board to the mother board. The power board directly plugs into the motherboard.

if you love to do experiments at your own risk...and you're 101% sure that it's your power board button was broken..

if you're power board button is using SPST (single pole single throw) switch..you can just short the two terminals with a tweezer and it should be okay, if it's only the button..

and if your power board button is using a SPDT, DPST switch then it's another story... but normally power board button is not that easy to broke...

better send it to service center of your manufacturer and be ready for some big bucks of charges..LOL :)

Member Avatar for thepastimer

If you're not 101% sure get the wiring diagram for your motherboard.

Member Avatar for usman1173

spst is single pole single thru

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