03-25-2016, 03:57 PM
What is the voltage rating of the problem cap? Was it getting hot before failing? I have used some of the MIEC 10 uF 500V caps as filters with no problems.
It is odd that the cap 77 on the schematic is blowing, as it is under no unusual stress. Its typically the first cap after the rectifier that goes. If it was installed correctly and the radio was playing normally for a hour, there is very little else in the circuit that could cause it to blow. Provided the cap was rated at 450 VDC or more, my guess is that you may have gotten a bad batch of caps and I would try a different replacement.
It is odd that the cap 77 on the schematic is blowing, as it is under no unusual stress. Its typically the first cap after the rectifier that goes. If it was installed correctly and the radio was playing normally for a hour, there is very little else in the circuit that could cause it to blow. Provided the cap was rated at 450 VDC or more, my guess is that you may have gotten a bad batch of caps and I would try a different replacement.
