Anders Wallin kirjoitti:
I seem to get very strong spurs at 50Hz and harmonics with an old second-hand SRS FS710: http://www.anderswallin.net/2015/09/srs-fs710-noise-measurement/ feature or bug? Anyone looked at the powersupply and figured out what parts to change?
If you live in a country with 50 Hz mains network then this sounds like a dead capacitor in the power supply. Usually this means that it has old fashioned linear power supply (with classic iron transformer). In that case, replace the secondary capacitors after the rectifier bridge(s). Check voltages with oscilloscope if you wanna see which ones, but it might be good idea to replace them all (there should't be many of them).
Should be very easy to fix. -- 73s! Esa OH4KJU _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
