Hi every one
Yesterday, I have my ts9 reissue modded to 808 spec :
swap ta 75558 for jrc 4558
swap output resistors for 100 & 10k
This unit sound very good now, but I've some noise trouble
when guitar volume pot is off, I can hear a strong hum that stops when I got the pot open, this when pedal is on and off both.
when pedal is off, I can hear some radio in may amp....
so what's wrong ????
I hope yoiu could help me
thanks oin advance
no one ? really ?
Welcome to the forum Keith. :D
Sorry I don't have answers for you, but give it a little time and I sure you will get answers.
When your pedal is humming, do you have it powered from a battery or an AC adapter? The hum with the volume all the way down is usually a sign of dirty power. Extra filtering in the supply will eliminate this.
To get rid of the radio reception, you might want to try a different cable from your guitar to the pedal as a start. If that doesn't help, you may need to add a small resistor and cap to filter the input. Just an idea.
Best of luck!
Take care,
-Peter
Sample values would help here.
What's the norm?.
Aharon
Check your solder joints. One of them might be acting as a diode and picking up RF..