IMHO the circuit is symmetrical, and R273 = R427.
What about the resistors next to those tantalums (C34/35), R*4 looks like it's been removed but the other one (R28) may never have been installed?
That's some pretty darn lousy-looking solder joints on those MOSFETs, btw. Are they OK?
Someone should move this thread to Class D.
What about the resistors next to those tantalums (C34/35), R*4 looks like it's been removed but the other one (R28) may never have been installed?
That's some pretty darn lousy-looking solder joints on those MOSFETs, btw. Are they OK?
Someone should move this thread to Class D.
Hi¡ Thanks for answering so fast!!
The amp turns on, green light ok, no protect, the power supply is working. It does not have output.
Yes, is simetrical but i dont know if the other resistor (427, 4R75) have the correct value, i dont know if it is original.
R28 looks like it never had a resistor, but R24 or R74 (the pcb is scratched) is resolder, but it doesn't have a resistor on it.
R83, R84 are reworked, 2490 resistor, i dont know if its the correct value.
Can someone give a hand to change this threat to the correct one?
Thanks, and Regards!!
The amp turns on, green light ok, no protect, the power supply is working. It does not have output.
Yes, is simetrical but i dont know if the other resistor (427, 4R75) have the correct value, i dont know if it is original.
R28 looks like it never had a resistor, but R24 or R74 (the pcb is scratched) is resolder, but it doesn't have a resistor on it.
R83, R84 are reworked, 2490 resistor, i dont know if its the correct value.
Can someone give a hand to change this threat to the correct one?
Thanks, and Regards!!
Hi, i solder the new 2101 MOSFET drivers, the output transistors are OK so i soldered again. I have a humming sound at the output, no músic or clear sound.
Im thinking the missing resistors are wrong, i put 10k Ohm , so maybe are to high, because they go to the vcc pin of the drivers. Anyone have the correct value for it??
Im thinking the missing resistors are wrong, i put 10k Ohm , so maybe are to high, because they go to the vcc pin of the drivers. Anyone have the correct value for it??
Hi! I try with 1k ohm for the vcc mosfet driver resistor, now the noise is a higher frequency but now i have sound! i try with a 100hz tone and a song, its there but mixed with the noise and distorted.
I will try a lower value, maybe the mosfet driver need more current, but if someone had this info, i will apreciate.
I will try a lower value, maybe the mosfet driver need more current, but if someone had this info, i will apreciate.
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