04-03-2015, 04:41 PM
Thought I would post a new update on the pioneer FM problem. ITS FIXED!!
I just could not leave this problem alone and continued to learn about stereos through some older FM stereo trouble shooting books I purchased.
Finally traced the trouble to the MC1304p integrated circuit on the MPX board.
After trying for 2 weeks to find this IC. or a compatible replacement. I got another complete MPX board and installed it and the thing came to life. Plays good but I will need to replace dial lamps and learn how to adjust the bias and idle current.
A thanks to morzh and Ron for thier assistance with this. Just wanted you guys and anyone else that had followed this thread to know what it turned out to be.
I just could not leave this problem alone and continued to learn about stereos through some older FM stereo trouble shooting books I purchased.
Finally traced the trouble to the MC1304p integrated circuit on the MPX board.
After trying for 2 weeks to find this IC. or a compatible replacement. I got another complete MPX board and installed it and the thing came to life. Plays good but I will need to replace dial lamps and learn how to adjust the bias and idle current.
A thanks to morzh and Ron for thier assistance with this. Just wanted you guys and anyone else that had followed this thread to know what it turned out to be.
