08-22-2005, 02:13 PM
| | Re: Problem powering up Dell Inspiron 600m
> On Mon, 22 Aug 2005 01:24:37 -0600, "Quaoar"
> <email@example.com> wrote:
>> This sounds like Dell wants to discharge capacitors on the start
>> circuit, then recharge when the power is reapplied, hoping that the
>> caps will last long enough with enough charge to allow the power
>> button to signal the start. If the cap(s) are completely failed,
>> this won't work. You might look at the mainboard and see if you can
>> identify any leaking or burst capacitors that might be fixed.
>> Usually this is a factory repair or new mainboard.
> I agree that it may be effecting the outcome by having the
> caps drain but is it necessarily a clean connection between
> this and failed caps? Generally speaking, if a cap is
> marginal it'll work better already having a charge then
> trying to accumulate one during an initial (time critical)
> power-on sequence... unless they're lossey. I wonder if the
> standby power subcircuit (internal power board) is failing
> and essentially locks up the logic for the power-on circuit.
>> A step that other vendors include is to hold the power button down
>> for a minute after removing the battery and AC power. You might try
> IMO, probably shouldn't take a minute, if the button is
> doing anything it should be a matter of a seconds.
One would think "instantaneous", but Compaq has recommended this for
years on their older laptops, FWIW.