Hello
I have a soundmagus VS1500 amplifier REV. E. I arrive with burned transistor of power supply
I have removed all the MOSFETs from source
I have changed all the gate transistors, 47ohm gate resistors and TL494.
When switching on the amplifier, it is protected. Turn on red light and blue blinking.
I have also retired the circuit drive ouput, but it is still the same.
Can it be the mute or protection circuit?
Greetings
I have a soundmagus VS1500 amplifier REV. E. I arrive with burned transistor of power supply
I have removed all the MOSFETs from source
I have changed all the gate transistors, 47ohm gate resistors and TL494.
When switching on the amplifier, it is protected. Turn on red light and blue blinking.
I have also retired the circuit drive ouput, but it is still the same.
Can it be the mute or protection circuit?
Greetings
Are any of the output transistors shorted?
Remove them (even if not shorted). Does that allow the amp to power up?
Link to diagram for a similar amp:
http://www.bcae1.com/temp/SLA1500.pdf
Remove them (even if not shorted). Does that allow the amp to power up?
Link to diagram for a similar amp:
http://www.bcae1.com/temp/SLA1500.pdf
Are any of the output transistors shorted?
Remove them (even if not shorted). Does that allow the amp to power up?
Link to diagram for a similar amp:
http://www.bcae1.com/temp/SLA1500.pdf
Yes, I removed the output transistors. (irf640n)
remains the same, led red fixed and blue blinks
Did you wait for a while to see if the blue stopped blinking. It blinks during the initial mute delay, if I'm not mistaken.
yes, the start sequence is like that, but it's always like this ... fixed red LED, blinking blue
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