Help with protection circuit G-5000. Unit is currently in protection mode. The customer indicated that sometimes the unit works, but always goes into protection after 10 or 15 minutes.
DC offset has been set and is 0-3 mv on both sides and are stable. Bias set to specification. Both channels have been tested with an 8ohm with a clean sine wave up to full power. All controls have been cleaned. Based on this, I think the problem is in the protection circuit itself. The protection relay shows 45 V on both sides of the coil. How do I further troubleshoot?
DC offset has been set and is 0-3 mv on both sides and are stable. Bias set to specification. Both channels have been tested with an 8ohm with a clean sine wave up to full power. All controls have been cleaned. Based on this, I think the problem is in the protection circuit itself. The protection relay shows 45 V on both sides of the coil. How do I further troubleshoot?