Ibanez TubeScreamer Pedal Repair

Steve said that his Keeley-modded Tube Screamer pedal had quit.  Could the Unbrokenstring Crew bring it back to life? This pedal is in great shape cosmetically! Robert Keeley made a few circuit changes that are well-documented on the Web.  This pedal has those changes. The battery box has its own lid. The bottom of the…

JBL SoundFactor SF12M Loudspeaker Repair

Sal is a busy DJ who had to use his backup system after one of his JBL speaker cabinets quit. Can the Unbrokenstring Crew help get him back on the air? This loudspeaker has been a reliable performer but had lost its high-end, then quit entirely. So we found this inductor inside the cabinet, probably…

Luna Gypsy Spalted Acoustic Guitar Needs Fretwork

Sophia of “Pretty In Punk” purchased this guitar new, but it was almost unplayable. Could the Unbrokenstring Crew get this beautiful instrument in shape? Nearly every fret was higher or lower than the one next to it.  To mask the problem, the action was very high. We straightened the neck itself so that it was…

Peavey MaxBass 158 Combo Amp Repair

Replacing broken input jacks and switches are the bread-and-butter of the amp repair business. This Chinese-built practice amp needed a new input jack. The owner was a college student and didn’t have the money or space to upgrade to something bigger. Could the Unbrokenstring Crew make this unit play again? The cabinet is a simple,…

Fender Power Chorus Combo Amp Is Intermittent

The lights are on but no one is home regardless of what knob we twist.  Can the Unbrokenstring Crew sort this out?   More Made In U.S.A. goodness!   Why am I not surprised?   The chassis comes out the back of the cabinet.  Nothing is really amiss at first glance.   Touching these components…

Peavey XR500 Powered Mixer Repair

Peavey powered mixers consist of a front panel with controls and a rear panel with the amplifier.  The amplifier will generally have a different part number entirely, which you will need to know in order to find the correct schematic. We have five input channels.  Each channel has a treble and bass control and a…