Post by tonyb on Jan 23, 2024 15:09:38 GMT -5
Recovered an X4500 from the flashing light of death.
I replaced the larger mosfets on the front right channel, but didn't replace the bias transistor (small).
Along with that, I also replaced the resistors near the mosfets and checked one more time before I put it all together, including resistors I didn't change. Not a every one but made sure to check a few.
Put it back together and I still can't get the pot to register anything below 100mV.
Is the bias transistor next to fail? What would cause this?
Should I just run it until the next failure? Should I just replace the bias transistor or, all of them and get them from the Denon reseller this time (like I just did with the resistors)?
Any thoughts?
I replaced the larger mosfets on the front right channel, but didn't replace the bias transistor (small).
Along with that, I also replaced the resistors near the mosfets and checked one more time before I put it all together, including resistors I didn't change. Not a every one but made sure to check a few.
Put it back together and I still can't get the pot to register anything below 100mV.
Is the bias transistor next to fail? What would cause this?
Should I just run it until the next failure? Should I just replace the bias transistor or, all of them and get them from the Denon reseller this time (like I just did with the resistors)?
Any thoughts?
