I'm working on a Dell Latitude D630 laptop. It has 2GB of RAM, Vista and a Core-2 Duo processor. The problem is that it won't go beyond the power light illuminating for about three seconds in terms of starting. I've tried with and without the battery while plugged in, and with the battery alone with the same results. The battery tester (part of the battery) says the battery is good - 5 lights. I've tested the adapter and it tests good at 19.5VDC and no part of the plug seems to be loose. I've tried to test the DC Power Jack, but because of the coaxial plug-style, it's difficult to be sure the results are valid. My results were that it appeared to be good (got good connectivity front to back using a stiff wire as a probe).
Presently, the laptop is in many pieces. Before I put it back together, is there anything else I can check or troubleshoot? Are there any suggestions for after I've reassembled? Is this just a 'dead' computer?
It's 10:45 Tuesday night (Eastern). I'll wait until tomorrow night at about 8:00 to reassemble the laptop. That way I'll have time to try any recommended troubleshooting while it's disassembled. I'll be available for the next couple of hours, then starting late tomorrow afternoon. Please excuse any lack of response during the day, tomorrow. I may acknowledge posts, but won't be back in my shop until about 5:00 or 6:00 to perform troubleshooting.