ok - well i have it mostly working now! removed the 3 removable IC chips and i now have the game playing and 2600 working fully expect for........... the sound is very weak!
the picture is perfectly clear and i've tried trimming the RF modulator - i've even changed it for another working one i had and still the same problem
when playing a game you can faintly here the sound amongst loads of TV interference
so come on people - has anyone got any ideas to why the sound is weak? it's almost fully working again!