Hi there, I have got a macintosh classic with a broken motherboard. It gives horizon lines and doesn't boot. I have tried a lot. I have cleaned the motherboard with alcohol, I have cleaned it in soapy water, I have replaced all capacitors, I have checked the traces and contacts, all with no succes. When I got this mac it had a bad battery leak but thankfully no traces were erased but I think (having tried almost everything) some chips got effected by the battery acid. What else can I try other than replacing the motherboard? All sugestions are more than welcome!