Basic Troubleshooting
A summary of fault conditions, their causes and remedies, are listed below.
The Model 2 Amplifier can produce high power levels which, without well designed protection circuitry, could damage loudspeakers. Therefore, most fault conditions which may occur during use will be indicated by the Model 2 reverting to a standby condition.
JRDG = Jeff Rowland Design Group, Inc.
Condition | Cause | Remedy |
FRONT PANEL STANDBY/POWER button lamp | Light bulb defective. |
does not illuminate after pressing, although the |
|
Amplifier operates normally. |
|
Remove STANDBY/POWER button from front panel and replace bulb located under button. Use replacement bulb kit and instructions supplied by JRDG.
FRONT PANEL STANDBY/POWER button lamp does not illuminate after pressing, and Amplifier does not operate normally.
Incorrect power connections or AC MAINS CIRCUIT BREAKER on Amplifier rear panel is tripped.
Abnormal operation of Model 2 Amplifier internal circuitry.
Review Installation/Rear Panel Power Connections section. Reset CIRCUIT BREAKER on amplifier rear panel.
Consult dealer or JRDG.
FRONT PANEL STANDBY/POWER button reverts to standby condition during listening but can be returned to operational condition.
Excessive
Severe clipping of Amplifier circuitry under intermittent overload conditions.
Repair or replace source component (preamplifier). Identify and correct abnormal conditions such as low frequency rumble and/or acoustic feedback caused by phono playback components (if applicable).
Reduce volume slightly or use higher efficiency loudspeakers.
