P
Peter_purple
Guest
hi yah,
Bought a laptop the other day, with a line across the LCD, you know of
of those
bad decoder/drivers or connectors or what causing a black pixel line all
across
Anyway, I took the whole thing apart, fiddled with the row and column
decoder
chips by freeze spray, shock (tapping) etc, twisted the LCD (its 10.4"
across)
and the like and nothing happened, still the same bad line across the
damn
middle. There were no rubber elastomer connectors, this was bonded
direct
from copper PCB to glass !
So I decided out of sheer nutty desperation to put a magnetic pulse
across
the connector from an AC source analyser (HP6813A), and voilah, in
about 3 secs the dam bad line totally disapeared and stayed that way !
My guess is some solid state effect occured where the copper meets the
glass and the magnetic pulse cleared it - didnt afect anything else, the
scan disk passed in thorough mode, all OK...
Weird huh ?
Though I did put 200v and 13Amps for a few millisecs through the
coil of wire !
peter purple precipitously perplexed with power
Bought a laptop the other day, with a line across the LCD, you know of
of those
bad decoder/drivers or connectors or what causing a black pixel line all
across
Anyway, I took the whole thing apart, fiddled with the row and column
decoder
chips by freeze spray, shock (tapping) etc, twisted the LCD (its 10.4"
across)
and the like and nothing happened, still the same bad line across the
damn
middle. There were no rubber elastomer connectors, this was bonded
direct
from copper PCB to glass !
So I decided out of sheer nutty desperation to put a magnetic pulse
across
the connector from an AC source analyser (HP6813A), and voilah, in
about 3 secs the dam bad line totally disapeared and stayed that way !
My guess is some solid state effect occured where the copper meets the
glass and the magnetic pulse cleared it - didnt afect anything else, the
scan disk passed in thorough mode, all OK...
Weird huh ?
Though I did put 200v and 13Amps for a few millisecs through the
coil of wire !
peter purple precipitously perplexed with power