93 maxima radio

i have the standard bose stereo system, but the control set sound almost never comes on unless i drive the car for a long time, i then it usually cuts out, the tape player doesnt accept takes, the display cuts on and off, the cd player almost never works and gives a cd err message, when it does work its usually quite staticky,i found a post from someone else for the fourth generation nissans that had this problem and it explains how to repair what is apparently a shorter resister, r510 for the display, and r519 for the audio, however i have the third generation and after taking it apart the numbers that label the resistors arent the same, and the problem board which is the stereo wire and power board is completely different, so now ive got it apart and dont know what im supposed to be doing, i would resauder everything but i dont know what half of these levers and pulleys are, anyone who knows how to solve this problem please,......anyone