stella_tommo

hi everyone, this problem has got me stumped.. any help would be much appreciated.

basically my mothers lcd monitor is playing up.

once up and running, it works fine, as if there was no problem at all, no screen flickering, no dimming/fading etc - normal!

BUT

when first turning the PC on, the screen displays nothing except 'no signal detected' or somehting similar for a few seconds, then goes blank - no flickering for 2 seconds etc that ive read on so many other posts - NOTHING. all that happens is the green 'power' led flashes on/off around 1/second.

whilst the screen is blank i tried the 'torch test', thinking perhaps it was the backlight - but all i saw was grey flickering lines coverign the screen, kinda like a tv which hasnt been tuned in to any channels, but not so severe.
also these lines are in big chunks and 'skip' up and down the screen.


after plugging/unplugging power and vga cables for around an hour each day, the monitor finally comes to life, and stays working absolutely fine, even to the point where i dared to turn the mon' on/off quickly, and it still worked fine as if nothign was wrong.

i know it is definitely the monitor as i have tried my own monitor on the pc and it works fine, and also tried the 'faulty' monitor on ym own pc, and got nothing.

i have taken the monitor apart and had a look - no obvious problems, all soldering joint that are visible look sound, all the caps 'appear' to be fine, although board testing is not an option as i have no voltmeter.

anybody know what the prob could be?

it seems like the mon' is desperately trying to display somehting, but just cannot get there, but i must stress it is not software related because it works 'in the end', and also does not work on amother machine.

sorry for the long post
regards

thomas

stella_tommo

Bump!

dai

what are you running
video card
cpu
m/board
ram
power supply
brand
wattage

check the listings in the bios for voltages and temperatures and post them

stella_tommo

dixons XP E-system - Ei304.
win XP sp3

P4 3GHz

mobo - dixons xp - rc4107 ma-rszh

960 Ram

ati radeon xpress 200 series - 64Mb

80Gb hdd

dix 1704b monitor


ADVANCED CHIPSET FEATURES

mem v = 1.8
core v = 1.20
video disp = auto
tv standard = ntsc

CPU Vcore = 1.36v
VDDR = 1.90v
+3.3v = 3.36b
+12v = 11.90v
+5v = 5.08v
volateg battery = 3.31v


the monitor is a generic one, and has its own P/S, running 12v form the transformer.

dai

what are the details on the label on the side of the power supply
brand
wattage

stella_tommo

PSU model number = ISO -400 PP 4
the brand is ISO

300w

dai

try a new power cable on the monitor

stella_tommo

ive tried it with my own monitor power cable, same thing. its not the vga cable either as this works fine with my own monitor.

dai

then i would suspect the monitor m/board

stella_tommo

any idea how i would go about finding a replacement? as its a nonbranded monitor i havent os far been ble to find any parts for it.

dai

it's probably more economical to replace the monitor these days
i rma'd one a few weeks old it took the manufacturer 4 months to source a new m/board

stella_tommo

ok, well thankyou for replying, much appreciated. just iout of interest tho, how much would a new m'board cost?

* im just thinking that after buying a new monitor i can still have my fun and play about with the broken one :> *

dai

i have never sourced one so don't know