I'm hoping someone might have some insight as to why my Pf-50t seems to have developed a high hum from the transformer/balance out.
Last week I played 5 shows at 3 different venues with two basses using the transformer out into the house systems. I heard a little bit of this hum in and out during the first sound check, but didn't even think it was me, played the next two shows without hum, then it came back in the next show, pretty intermittently. the sound guys were able to determine that it was coming from me and said it was in the 6khz to 8khz range. I switched to the preamp line out (post EQ) for the last show without incident.
I'd like have the option to use the transformer out for recording purposes at least, if not live.
any ideas on what might cause this or how to remedy?
thanks!