# 1222 Tuner VCO Module **URL:** \ **Category:** KOSMO MODULES\ **Created:** [January 17, 2020, 5:33pm UTC](https://lookmumnocomputer.discourse.group/t/1222-tuner-vco-module/16 "2020-01-17T17:33:40Z")\ **Posts on this page:** 1\ **Showing post:** 343
**Author:** ![heckseven](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/heckseven/32/23483_2.png) [@heckseven](https://lookmumnocomputer.discourse.group/u/heckseven)\ **Post date:** [September 27, 2020, 7:22pm UTC](https://lookmumnocomputer.discourse.group/t/1222-tuner-vco-module/16/343 "2020-09-27T19:22:04Z")
Seems like it might be a power supply issue of some sort. - I left the midimuso in and removed other modules one at a time. Each LFO I removed decreased the wobble slightly. - I tried different wall warts. I even swapped for one that was only 1amp instead of two which lowered the pitch and increased wobble. This seems promising. I use two FC Microbus power supplies per case connected [in parallel](https://lookmumnocomputer.discourse.group/t/power-supplies-choices/357/19) I think. Each case has one 12V 2a AC AC wart. Perhaps I need to get a better wall wart or explor other power supplies? Ideas? I suppose I could also separate the Microbus and have a wall wart per bus, but I was hoping to keep it to one power cord per case. --- _[View the full topic](https://lookmumnocomputer.discourse.group/t/1222-tuner-vco-module/16)._