Hi,
I am working on a Classe CAV-180. I wanted to ask this question to Classe' Tech support but they seem to be out of business.
I got this amplifier as dead. I found that the slow start 10 ohm 50watt power resistor was the problem. I temporarily replaced this with a 15 ohm resistor and the amplifier starts up and sounds great! There is a short beep noise for say a 100ms when first pressing the power button. I am not sure this will clear-up when I put in the proper resistor.
The main question here is: on page 11 of the service manual (attached) they describe several updates. I don't know what issues these updates apply to and if I should do them?
This one is troubling me.
"4. On board B2E2X (5 PCBs), make sure that Q1 and Q2 are part number 2SK79 and 2SK216. They should be mounted on a small aluminium block, which is mounted to the chassis (see following pics). If they are printed as ECX10N20 and ECX10P20, replace them, using the following guide."
It seems the ECX10N20 and ECX10P20 are very good parts so why would they want these changed?
Thanks, Gary
I am working on a Classe CAV-180. I wanted to ask this question to Classe' Tech support but they seem to be out of business.
I got this amplifier as dead. I found that the slow start 10 ohm 50watt power resistor was the problem. I temporarily replaced this with a 15 ohm resistor and the amplifier starts up and sounds great! There is a short beep noise for say a 100ms when first pressing the power button. I am not sure this will clear-up when I put in the proper resistor.
The main question here is: on page 11 of the service manual (attached) they describe several updates. I don't know what issues these updates apply to and if I should do them?
This one is troubling me.
"4. On board B2E2X (5 PCBs), make sure that Q1 and Q2 are part number 2SK79 and 2SK216. They should be mounted on a small aluminium block, which is mounted to the chassis (see following pics). If they are printed as ECX10N20 and ECX10P20, replace them, using the following guide."
It seems the ECX10N20 and ECX10P20 are very good parts so why would they want these changed?
Thanks, Gary