Dr Z Repair – Mini Z This Dr Z Repair was a simple job. This DR Z amp is a 2 valve class A amp with one ECC83/12AX7 and one EL84. In this case, the output EL84 valve was faulty, the heater. The customer asked me to replace the amp with one the fancy ‘cryo’ […]
Recent Guitar Amp Repair Jobs
On this page you can see some of the guitar amp repairs I’ve done recently.
Expect to see a mix of all the usual suspects: Marshall, Fender, Mesa Boogie, Blackstar, Peavey, Laney, Orange, Trace Elliott, Ashdown, HiWatt, Roland, Line 6, Bugera, Ibanez, Vox, Dunlop, MXR, BOSS, Digitech, Hughes & Kettner, Dr Z, Cornford and many more.
In the world of valve amplifier repair, there’s not much difference between the way one amp fails and another, but if you’d like to see some information about a guitar amp repair that I’ve performed a particular brand of amp then search here.
From the cheapest to the most expensive, valve guitar amps are sensitive beasts and they are often in need of a service. If you have a guitar amp repair job or a guitar amp service that needs doing, then please get in touch.
This MXR repair, a Carbon Copy, was a simple fix. ESD (static) had destroyed 3 switching transistors used in the bypass circuitry. After identifying the fault I contacted MXR to find the part numbers of the damaged items. MXR are aware of the issue and recommended a modification to significantly reduce the likelihood of a […]
Trace Elliot Repair – GP7SM 200W This Trace Elliot repair is actually a service. My solid state service procedure involves the following steps: Cleaning of all pots and connectors Re-soldering dry or suspect joints Any preventative maintenance required Replacement of out of tolerance or defective components Output power test. I’ve seen a couple of […]
Marshall Repair This Marshall Repair was brought to me with one of those sneaky ‘hard to find’ problems. The amp was blowing fuses when the customer was playing it. He’d taken the amp to another repairer who hadn’t found any problems. Unfortunately the amp continued to blow fuses. Guitar amplifier repairs of this kind often […]
Laney Repair This Laney Repair was a mixed bag of several issues! The amp is a VC50 – 5 12AX7 valves and 2 6L6s in the output. This particular specimen has a strange an whine present whenever channel A’s spring reverb was used, also a faulty gain control on channel A, an intermittently working footswitch […]
This Mesa Boogie Dual Rectifier Repair is one of the more unusual problems I’ve come across. The Mesa was brought in with very low (and unpleasantly distorted) volume and blowing fuses. I tracked the issue to the output circuitry and checked for all the usual failures with no result. The output transformer looked to be […]