Road King II effects loop sounds distorted

sleepingtiger · Jun 26, 2012

...& I don't mean harmonic distortion, but a ratty, ragged, ugly distortion that sounds kind of "on top" of the clean tone. I know I'm going to have to check & contact clean all my pedalboard connections, but thought I'd see if there is an amp issue that you guys know about. I have checked & cleand both sends & returns & no change. FWIW, the amp has sat unused for a few weeks, but had no issues previously.

Any ideas or constructive suggestions appreciated.

Thanks-in-Advance!
Tony

LesPaul70 · Jun 26, 2012

I assume that you have done the obvious checks like the send level etc.?

Have you tried simply placing a patch cable in the FX loop, instead of your pedalboard? If you still get distortion, then it's a problem with your amp (possibly tube). If not, it's an issue with your pedalboard.

domct203 · Jun 26, 2012

sleepingtiger said:
...& I don't mean harmonic distortion, but a ratty, ragged, ugly distortion that sounds kind of "on top" of the clean tone. I know I'm going to have to check & contact clean all my pedalboard connections, but thought I'd see if there is an amp issue that you guys know about. I have checked & cleand both sends & returns & no change. FWIW, the amp has sat unused for a few weeks, but had no issues previously.

Any ideas or constructive suggestions appreciated.

Thanks-in-Advance!
Tony

If tweaking the FX Loop signal levels does not fix it, swap your FX Loop driver tube with a new one. (This sounds like a tube issue).

Dom

sleepingtiger · Jun 26, 2012

I'll try the jumper first. I DID try switching to loop 2 from loop 1 & had the same results. I hope to get at it tomorrow, if not Thursday...

Tony

domct203 · Jun 27, 2012

sleepingtiger said:
I'll try the jumper first. I DID try switching to loop 2 from loop 1 & had the same results. I hope to get at it tomorrow, if not Thursday...

Tony

V5 is the FX Loop driver/buffer for both loops. If the tube is bad, it will effect both loops.

If the jumper yields the same results I would change the V5 tube. You should have spares on hand anyway.......

Dom

sleepingtiger · Jun 28, 2012

I didn't have much time, but I DID try the jumper & it sounded fine, so it IS in the effects chain. Now all I have to do is find it! Gawd, when it's right, ****, that amp is sounding great!

Tony