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Dead Compaq Armada 4210T Laptop (more details)
Hi,
My brother gave me his "dead" Compaq Armada 4210T laptop to repair. I normally service TVs and other stuff. With fully charged battery, when I turn it on (push power button), almost nothing (no hard disk spin or floppy disk drive noise (with floppy in drive), no "beeps" or lights, no display (even with external monitor)) happens when you turn it on except 4 (power, caps lock, scroll lock, numb lock) of 5 LEDs light up. I removed the battery, but the same thing happens using only the external power source. With the room totally quite, if I put a floppy disk in the drive, I can hear a faint noise when I turn on the power (but floppy drive doesn't run). If I remove the floppy disk, it isn't there. I measured +5 volts (after power turned on) at one of the pin connectors for external keyboard, which tells me that the internal DC to DC inverter is "running". This failure wasn't the result of a power surge, as in a storm. No advance warning of any kind and the laptop wasn't dropped or abused. I thought possibly a static discharge from his body after walking across a carpet, but he said, he doesn't recall that event? I opened the unit and found a tiny 5A fuse, but that tested good (not open). I examined circuits for bad solder joints. Also checked for loose connections of any kind. If you ever had this experience, please tell me what you did to fix it. Thanks in advance, Brad Before you type your password, credit card number, etc., be sure there is no active keystroke logger (spyware) in your PC. |
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