Intermittent Ashdown EVO III 500 Bass Head

This head was soldiering away in the studio when the output signal became distorted.  Can the Unbrokenstring Crew un-distort the output and keep it from happening again? Stock photo credit: Ashdown Engineering   Name, rank and serial number, please.   The oscilloscope shows the waveform presented across an eight ohm resistive load.  A sinewave is…

Behringer T1953 Preamp Refurb

This preamplifier and microphone processor is in the audio chain of every hit produced by Majic$tyle Studios over in Houston’s 3rd Ward.  But it quit one day.  So the music quit.  Could the Unbrokenstring Crew help the Majic$tyle Crew bring back the music? Like many recording facilities around Houston, the modest studio in the back…

KRK Rokit8 Powered Studio Monitor Repair

Steve used these monitors in his studio constantly. Unexpectedly, they broke. Can the Unbrokenstring Crew bring them back to life? These monitors have no grille so the raw loudspeakers were given a little protection for the trip to the shop.   These are entirely self-contained, with power supply, amplifier, input attenuation, and high frequency controls…

Peavey Mark III Bass Head – Busted Controls

These sturdy old bass heads turn up in pawn shops and Craigslist from time to time. They soldier on for years, sometimes making music for decades. This unit came in for some minor repairs and a Million Mile Checkup. Let’s get to work! This unit has LEDs for the power indicator and a clipping indicator,…

Peavey Bandit Combo Amp Refurb

David found this fine old Peavey combo amp in a pawn shop for almost next to nothing. Could the Unbrokenstring Crew resurrect it? This saga begins on a cool Saturday morning in the Guitar Center Pasadena parking lot.  If you look closely, you can see right through this unit.  Literally.  What are we getting ourselves…

Marshall AVT50X Combo Amp Has Issues

The customer was headed to the recording studio with his favorite amp.  However, our patient has two issues. When the unit operates, the fan is noisy and the output signal comes and goes when you tap around the headphone jack. When you don’t hear the fan anymore, the whole thing has quit. Can the Unbrokenstring…

Mackie 808S Powered Mixer Blows A Fuse

This powered mixer lives two lives; During the week, it rides quietly in the back of the sound van; When the weekend comes, it works hard as the sound system on the main stage for outdoor festivals. After years of incredibly reliable service, the unit just stopped. And it already had a date on the…

Peavey Artist Combo Amp Refurb

This Peavey Artist combo amp was WAY too distorted to suit even the most extreme metal head. Could the Unbrokenstring Crew look into this and put this unit back into service? First, a tour.  You can have two channels, or a mix of the two ‘Automix’ inputs.  This was a ‘thing’ back in the day.…

Ibanez Compressor Pedal CP10 Repair

Mysteriously, this pedal just went mute while playing.  Can the Unbrokenstring Crew get it going again? I find this to be a unique design.  But I cannot help but think that the assumption was made that everyone uses their right foot to run the pedal.  Using your left foot is a little awkward.   Let’s…