Hello Mario! You must see all resistors and change all gate resistor for new 100k and 39 or 47 i dont remember whats is your resistor get. Change all IR21844 and check his diodes x3f or s1b or us1b and check capicators of ir21844 (4.7uF)
Check 2.2R 4 resistor of back voltage and check 47ohm 7w resistors
When you will cheking all you must power on your amp and see with osciloscope on the 1,2,3,4 amp 2.3kHz operating frequency.
WARNING!!!
DONT PUT TRANSISTORS IF YOU WILL NOT SEE GOOD FREQUENCY!
Check 2.2R 4 resistor of back voltage and check 47ohm 7w resistors
When you will cheking all you must power on your amp and see with osciloscope on the 1,2,3,4 amp 2.3kHz operating frequency.
WARNING!!!
DONT PUT TRANSISTORS IF YOU WILL NOT SEE GOOD FREQUENCY!
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