Re: MGA 4150 whistle
Make sure the RCA inputs are clean. Take the back off check for anything loose or burnt. You can also clean the board with electronic cleaner, just make sure you use the safe for plastics type. If the amp is still playing it probably is something minor.
"Shoot For The Top...... The Bottom Is Already Full"
Q u o t e s:
To err is human, but to really foul things up requires a computer. Farmers' Almanac