Hello Friends, then I took my CD64 and after I saw that on the screen RAM is zero!, so I took another CD64 working and I swapped the RAM, but still continues to not give me the value of the ram, so I can not upload games ... any ideas?? thanks
-no or wrong or insufficient power supply -broken RAM <-> CPLD connection (physically severed or just poor electrical contacts) -broken component (buffers, oscillator, maybe voltage regulator) The only case which wouldn't be repairable is a broken CPLD since it's a custom component, but that's very unlikely.
problem solved, the problem was the connector that does not enter CD64 Nintendo64 well in, so I removed the CD64 and as you can see from the photos I put all the connector into the N64 ... in practice we must make a strong pressure to connect the two systems and clean the connector...... and after work !!!!! byeeeeeeeeeeeeeeee