Hello everybody,
I am completely going crazy with this amplifier and need experienced help.
The problem:
I got this Cyrus One amp with a broken channel which starts working when the volume is turned up half the way. It still has a lot of distortion after that.
After opening i saw that the fusible resistor R97 was burnt. I tested all the caps and changed them because there were a lot of them off. After changing the resistor i powered it on and tested everything. It performed really good on the oszilloscope until it started smoking again after turning the volume a little bit up. After that i checked all the power transistors which were good. Now when i turn it up the fusible resistor r 93 also gets way too hot until it smokes. Please help me find the problem.
![[Bild: IMG-5471.jpg]](https://i.postimg.cc/XY9KHqMF/IMG-5471.jpg)
![[Bild: IMG-5472.jpg]](https://i.postimg.cc/nhqKRr8q/IMG-5472.jpg)
I am completely going crazy with this amplifier and need experienced help.
The problem:
I got this Cyrus One amp with a broken channel which starts working when the volume is turned up half the way. It still has a lot of distortion after that.
After opening i saw that the fusible resistor R97 was burnt. I tested all the caps and changed them because there were a lot of them off. After changing the resistor i powered it on and tested everything. It performed really good on the oszilloscope until it started smoking again after turning the volume a little bit up. After that i checked all the power transistors which were good. Now when i turn it up the fusible resistor r 93 also gets way too hot until it smokes. Please help me find the problem.
![[Bild: IMG-5471.jpg]](https://i.postimg.cc/XY9KHqMF/IMG-5471.jpg)
![[Bild: IMG-5472.jpg]](https://i.postimg.cc/nhqKRr8q/IMG-5472.jpg)

