r 40 vertical lines on screen

[flyer]

r 40 2681 f7g s.no kbln107
well, to cut a long story short,laptop boots up sometimes to windows log on,welcome,then screen flickers,vertical lines and moor flickering until you cant make out anything through the lines.
mouse leaves a broad colour trail and stays on screen
hooked up to external monitor but still the same
removed the screen still the same on monitor.
all cleaned with compressed air,fan working.
its probably as bad as i think,HELP

[ajkula66]

Welcome to the forum!

Sounds like a bad graphics card, which is soldered to the motherboard, hence your R40 is in need of a motherboard replacement.

At today's prices, you may just want to move on to a newer machine.

Good luck.

[flyer]

thanks for greeting and quick reply ajkula66,no easy fix here then
this started as a project as a knowledge gain,new to all this,
fool and his money and all that.still like to take it to bits,see what im up against in the future
might find a cheap board as some practice,so its back to the old satellite 4600
thanks again.

[flyer]

So,took it to pieces,all over my front room table,but since then,friend gave me his old one from his shed, exactly the same,same model,same thing.
Now what you got to understand is this,me old,me don't understand jargon,me first year
in computing of any kind,i work off a dongle cos me got no money,me gotta learn,
difficult to download because of bad signal,i live in them thar hills.
got old Sat pro 4600 with broken hinge to get out(gonna fix)
is there "out" a man can do to fix this r40 without buying a new motherboard
heard you can put em in t oven to re solder or summit like that
cant just chuck things away, specially now i got two to play with.
you people are so great you know,i didn't know there was so much out there till recently.
God help us .(and thanks for spellchecker).

[Bruce Guttman]

First, you can't just put the computer in your cooking oven for a few reasons:

1. The temperature you need to get to for melting the solder will also destroy the rest of the computer. You need some 250 C.
2. You won't be able to control the temperature properly.

If you really want to play, take the system board out. Remove anything that is plastic and not soldered on (you can leave the socket for the CPU). Get a heat gun and an infrared thermometer. Also some "no clean" flux in a needle dispenser. Inject some flux under the graphics chip (it will say ATI on it). Using the heat gun, apply heat to that chip. Watch the temperature using the IR thermometer. Bring the temperature up to 250 C over about 3 minutes. Then hold temperature for 30 seconds. Then cool down slowly over 3 minutes.

If you follow that procedure you will more than likely trash the board, but you might get lucky and it will work.

Your countryman, posh geordie, ran a service that did this reflow but apparently he has had to shut down.

[flyer]

thanks Bruce,now your talking,and got me giggling,i'll look up inferred thermometer and no clean flux,
see what i can do,it may be a week or to before i can get back on this but you can bet i'll give it a go,
what have i got to loose? once again,thanks to you ,the forums and the patience and all your combined knowledge,
always makes for great reading
sean.

[RealBlackStuff]

For the price of an infrared thermometer you can probably by a used R40 motherboard.
Don't wast more money than necessary on such old machines.