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Hello All,
First of all, this is a rare source for information on Laptop repairs. CHEERS.
I have an ASUS L7300-G Laptop from back year 2000. (Pentium III KP 600/256 CPU)
After shutting off on a low Battery, it never came up again.
Symtom:
Press PowerOn, Powerlight comes on and stays on, charging light is on, hdd
light briefly lights up . You hear a little short noise from the drives, then silence.
Seems no bios startup activity. (no activity on bios-chip pins with scope).
Voltage-checks OK on 1.5V-cpu, 3.3v-memory, 5v-drives. Fan-voltage notok
(ie. not running)
i red before there are little chip-fuses to secure certain chips.
also i red, the cpu rarely dies.
i am pretty good in electronics, so i want to repair that "dam thing".
no experience on laptops though.
"dead laptop" seems to be a common problem and might be related to some motherboard circuit problem.
If Mr Sandip Golani comes back here to the forum, please give advice to the
"dead laptop" problem.
more narrow: what makes bios not start. and.. no fan spinning, howto detect a dead cpu.
other inputs of corse welcome!
regards from germany
tom
Added after 53 minutes:
reading through some postings,...
I spilled liguid (coffee, wine etc) over the laptop or left it in the rain:
liquid mostly harms the keyboard and the tft-display.
most likely the keyboard.
(all mechanical problems).
a display may still function in part, so does a keyboard.
Solution: replace it. there is no REAL fix. (or life with it).
If your laptop gets wet, turn it off, leave it drying on the heating
for a couble of days. Then turn it on again.
CMOS memory:
I guess in ourdays configuration is not saved in cmos-memory any more.
rather in eerom or flash. The battery you find on the motherboard is
just to supply the realtime-clock to work when device is off.
(absolutely uncritical!)
on the other hand i am hearing a lot about "Resetting CMOS". hmmm
CRASHED bios:
if you are lucky you can unplug the flash-chip and get it reprogrammed externally.
otherwise ? unsolder it? (dont know, you might be able to reprogram incircuit)
NOISY fans:
after years of operation its time to cleanout the dust in your laptop.
a vacuum-cleaner is a good choice to suck out the dust.
or even open it up and do a clean job.
a noisy fan indicates its plastic wheel is somehow deformed by the time and heat.
propably time to exchange.
also the attachment of the heatsink to the cpu might need attention if laptop
gets hot. there is a thermal-paste between the cpu and heatsink to conduct the heat.
this gets old by the time and could need a fresh new coating.
heat-paste available in electronic stores.
all mechanical parts need some service after a while.
cdrom cleaning the head with alcohol f.e.