Today, we have a dead MXR Dyna Comp on the bench. The pedal turns on, as indicated by the LED. The output, however, is completely dead. Let’s figure it out! MXR Dyna Comp Not Working This week an MXR Dyna Comp compressor made it’s way to my bench. The client said that, after attempting to […]

This post of Repair Room concentrates on a faulty Scarlett Focusrite 2i4. This unit hails all the way from Portland, Oregon, where it decided to inherit an intermittent problem with the Monitor control. I don’t normally take in interfaces, but to expand my repertoire I figured I’d take on the challenge. Let’s get to it! The

The BOSS GEB-7 Bass Equalizer is a convenient, compact 7-Band graphic EQ solution for bass guitarists. In this post, I cover the troubleshooting process taken to repair a faulty GEB-7. The Faulty BOSS GEB-7 In this issue, we experienced intermittent cutting-out of the pedal’s output signal. For some time the pedal would play fine, however

The Ibanez TS9DX is an upgraded “deluxe” version of the Ibanez TS9 Tubescreamer. It houses the original TS9 circuit, along with 3 additional modifications. The modified versions can be selected via a selector switch. In this post, I cover how I repaired one of these TS9DX’s, and the process behind how I did it. Ibanez

There’s the birds, there’s the bees, and there’s reverse polarity protection. Always protect your circuits. The Electro-Harmonix Bassballs is a twin-dynamic envelope filter. This particular unit ended up on my bench as a result of plugging in the wrong polarity power supply. In this post, I go over the repair process and how I got

The Line 6 DL-4 Delay Modeler has proven to be one of the most useful delays of its’ kind. The DL-4 was first introduced in 2000 as a convenient combination between digital and analog versions of delay in a single unit. Today, we have a case of sudden death! This particular unit functioned perfectly in the past, but one

Today, I received a Korg Poly 800 that much less than pitch perfect. This unit was almost a whole step out of tune! So in this post, I go over a tune-up procedure for tuning the Korg Poly 800 to the correct center pitch. The Korg Poly 800 Since it’s release in 1983, the Korg Poly

The Hermida Audio Zendrive is based on a classic overdrive circuit with one additional feature: a Voice control. Espoused by guitarists like Robben Ford, Sonny Landreth, and Nalle Colt, the ZenDrive by Hermida Audio continues to live up to overdrive connoisseurs. In this post, I’ll detail a repair that was done to a Hermida Zendrive, as well as

This round of Repair Room features the 6-channel Furman HDS-6 Headphone Distribution System after a mild power surge incapacitated 5 of the 6 channels. In this post, I discuss what the HDS-6 system is, along with the process for how I fixed it. The Furman HDS-6 Headphone Distribution System The Furman HDS-6 utilizes Cat 5 cabling to distribute