thanks uni - I looked at the drawing and understood nothing............then again im drunk as a lord - weh hey!

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to be honest ive got to the stage where I must understand what is actually going on  , on the board - what ALL the chips do etc etc

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this is becoming an obsession.......just have to understand the board logic, use it to understand a problem, and again use it to find and fix the bas%$£d of a problem

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It kills me not having the knowledge I need to understand this

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off to utube for tutorials............god help me

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thanks again all