Hello!
I have a small Genesis SM60 amplifier, I somehow short the ground wire to the power cable terminal. The amplifier fuse went out and it didn't turn on.
I found out that power and output transistors went out along with the 47 ohm resistors.
Installed new IRFZ44Ns(4) and TIP147/142(2 each), amplifier is running hot and still blowing the TIP147/142 after half an hour of running.
What am I missing?
Thanks.
I have a small Genesis SM60 amplifier, I somehow short the ground wire to the power cable terminal. The amplifier fuse went out and it didn't turn on.
I found out that power and output transistors went out along with the 47 ohm resistors.
Installed new IRFZ44Ns(4) and TIP147/142(2 each), amplifier is running hot and still blowing the TIP147/142 after half an hour of running.
What am I missing?
Thanks.
The gate resistor is more likely 47 ohms than 47k ohms.
This would not affect the output transistors. I don't see anything that looks like new heatsink compound. Did you remove the old compound from all of the heatsink mounted components (including the insulators) and applied new compound before reassembly?
This would not affect the output transistors. I don't see anything that looks like new heatsink compound. Did you remove the old compound from all of the heatsink mounted components (including the insulators) and applied new compound before reassembly?
You are correct, I was testing the transistors for a short while. I had a thought, I shall apply fresh thermal paste, once I everything is ready for screw down.
Check or repace the previous stages as when a semiconductor fails, usualy kick back to the dricer stage(s).
Update- Got it fixed, changed the power and output transistors, along with 3 capacitors.
Its good now.
Its good now.