A4000 very leaky caps.

mjnurney

we live as we dream. Alone.
Joined
Aug 28, 2010
Posts
9,473
Country
england
Region
Milton Keynes
My A4000 3.1 is very poorly, i bought it before christmas and I've only just had chance to look at it , now that my workshop / spare room is ready.

well , the 4000. black screen, yellow screen , boot and no boot and sometimes it runs just fine.

So whats wrong? well first of it was very dirty inside, dusty and discoloured. the battery had leaked but only slightly and had been removed but not cleaned.

and so last night i gave up trying to boot it and i removed the motherboard. oh dear.. the caps are very discoloured, leaking all over the place. the ram sockets are discoloured and its worse than i first thought.

As i removed the caps and cleaned the cap pads - they are lifting , corroded tracks and discoloured in the immediate area.

I've cleaned the board now and recapped it - rewired some of it but no boot - same as before , more investigation needed here.

black screen. it appears to try and boot, the screen flickers and the floppy clonks once but no 3.1 logo.

back to the soldering iron.

(well after i go look at a car in newcastle bah)
 

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