This amp has a strange issue .
It will work fine for 20 mins then it will start drawing excessive current and the resistor will start smoking.
Leave the amp sit and it will work fine again and then if I turn the amp off and back on it will draw current it’s hit or miss with this amp .
As seen in picture 3 this is the resistor that starts smoking .
Any ideas on what to check or what may be causing the issue ?
The amp has been worked on before by someone else .
It will work fine for 20 mins then it will start drawing excessive current and the resistor will start smoking.
Leave the amp sit and it will work fine again and then if I turn the amp off and back on it will draw current it’s hit or miss with this amp .
As seen in picture 3 this is the resistor that starts smoking .
Any ideas on what to check or what may be causing the issue ?
The amp has been worked on before by someone else .
Attachments
Intermittently shorted inductor?
How does the output signal change when the resistor begins to heat up?
How does the output signal change when the resistor begins to heat up?