Hi all. A few weeks ago I posted a thread that I was in the market for a JFX-1. I found a nice one and it arrived while I was out of town. Today I was able to put in in my rack that consists of Furman power conditioner, Korg PB tuner, Marshall JMP-1 preamp, and Marshall EL-34 100/100 power amp. I have normal sound but no effects. I've triple checked the connections as follows: guitar>tuner>JMP-1 preamp input>JMP-1 effects send>JFX-1 input>JFX-1 L/R output>JMP-1 L/R effects return...Then JMP-1 L/R mains>EL34 100/100 A/B inputs>EL34 100/100 A/B loudspeaker outputs>1960 4X12 cabinet. I did test the battery on the JFX-1 and the OSD says that it is low. What gives? I've got normal sound from the JMP-1 through the entire chain, just no effects from the JFX-1. Hopefully it's something simple that I've overlooked and I'll take any embarrassment that may result lol. Thanks a mill!