Hartke LH1000 sound problem
i own a Hartke LH1000 and in the last few months every time i stop playing or lower the volume on my bass for a quick break, my amp will not output any audio. my sonic maximizer (patched in the effects loop) will detect a signal when i resumed playing, but still no sound from the amp until i either aggressively slap/pop the heck out of my strings or (yes, very last resort) unplug and plug my input cable while the volume is at the 12 o'clock position or so, startling the rest of the band as the audio finally comes back. i'ts happened on several cabs, both passive and active pickups, and passive and active inputs. i've contacted the Hartke/Samson site via the online support form and never received a response. anyone have any ideas what might be causing the problem? luckily my amp is still under extended warranty will be sent for repairs shortly, but i'd like to know what may be causing this problem so i can fix it myself in the future. thanks!