No RGB A1200 fixed.

mjnurney

we live as we dream. Alone.
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Ive had a 1200 board with flakey RGB for a long time and no composite has packed up too.

I've spent an hour checking voltages and OMHs and shorts / general damage but nothing seem to stand out any.

So as a last resort I've recapped the board - they were leaking anyway and I've change the 74HCT , why you may ask did i change this ? well after the old girl had been on for an hour , i touched this with the back on hand an in a scene similar to raiders of the lost ark - i had a pink burn mark on me ( slight exaggeration) but anyway she was hot.

now all is well. So if your looking for an RGB fault just check the 74hct - i should of got some measurements before i removed it ....but i didn't.

mike.
 

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manic23

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Well done, nice job. I wish I had the skills you have to diagnose faults like that.
 

supaduper

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Excellent work again mike, I too was looking at an A1200 not long ago and like you I was `Fingering` components for heat and then I touched the `47R` by the U12 and I had my little digit under the tap for 15 mins :eek:and had a oblong mark on my finger for days LoL, the `47R` had shorted:D
 
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mjnurney

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got to be careful what your fingering, thats got me in bother before...
 

johnim

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nice work mike and stop that fingering its not good for you
 

supaduper

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Yeah take care guys it can hurt sometimes :)

leccy.jpg
 

Kusaka

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Great!
Some day I'll grow big and strong and wise myself, able to recap and desolder chips..
 

mjnurney

we live as we dream. Alone.
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I'm neither wise nor clever , just observation really. I'm a mechanical engineer ....not electronic. there are some clever folk on here :)

(not me)
 
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