SX-190 buzz in audio
My SX-190 has buzzed at a level just loud enough to be annoying since
I got it a couple years ago (minus a lot of time when it wasn't working at all) even in standby. One of the things I did to the radio is replace the electrolytic caps, including the main power supply filter. I used the same 2200 uF the schematic called for, but the buzz is still there. Does anyone with one of these radios have a real quiet set, or do they all buzz like this? Would putting caps across the rectifiers reduce the buzz, or do I need to go to a quieter external supply? Or should I do something to the audio amp? One more thing- where can I get a set of tuning tools that includes the hex drivers for IF can slugs? Thanks, MR P.S. Download 100+ pages of SX/AX-190 documentation in an indexed .pdf file he http://www.rehorst.com/mrehorst/Alli...Info-Oct02.pdf |
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