Diagnose Faults

WARNING - All modifications involve you being in the vicinity of dangerous voltages that could easily kill you if you do not follow safety procedures and are not qualified in the Electronics industry. We accept no liability whatsoever for your own actions and subsequent demise should you not follow current safe practising skills where hazardous voltages are present.

Below is a diagram for diagnosing tube amp problems. This diagram is generic so it can be used on almost any tube amp but is obviously more useful with guitar amps because of the way it defines the tests and checks. It has proved useful over time and I guess it will also be useful for you if you have a problem.

This can be downloaded as a PDF document by clicking HERE or you can print this page out for your records.

This is a block diagram similar to one from Aspen Pitman and is very useful for diagnostics. Print it out and keep it handy.