The gain pot and x-over freq pot are actively used on the device, only the bassboost pot is non-functional, there is no response even if I turn it left or right.
[COLOR=var(--YLNNHc)]A new 361 was installed, the problem was the same, there is no darkening under the circuit board, I will try to remove the indicator.[/COLOR]
[COLOR=var(--YLNNHc)]A new 361 was installed, the problem was the same, there is no darkening under the circuit board, I will try to remove the indicator.[/COLOR]
After desoldering one terminal of the inductor, reinstall the drivers. Do they overheat (heat up more than the other corresponding parts)?
Does the amp still power up and produce audio?
The problem may have seemed to be the same after replacing the 361 but that's because there were multiple problems.
Does the amp still power up and produce audio?
The problem may have seemed to be the same after replacing the 361 but that's because there were multiple problems.
Yes, you are right, Perry. The bottom of the inductor is darkened and the inductor is damaged. This is the reason for the problem.
I added the drivers to the circuit, the short circuit in the device disappeared, I think all I need is a new inductor.
The inductors are generally re-windable. You may only need to insulate the blackened windings (it will at least work for testing the core).
When you can see a dark ring in the shape of the inductor on the bottom of the board, the cores are often beyond saving because they ran too hot for too long. This one appears that it may be OK.
When you can see a dark ring in the shape of the inductor on the bottom of the board, the cores are often beyond saving because they ran too hot for too long. This one appears that it may be OK.
Yes, first of all, I would like to thank Perry Babin and Papaz
bill for helping me repair my device. I could never overcome it alone. My kicker zx750.1 came back to life in a stable manner.
Did you check the final value after all windings were back in place?
Are both inductors running at about the same temperature at idle? You should have the amp fully reinstalled back into the heatsink so you can let it idle without risk to the FETs. Let it idle for about 10 minutes.
Are both inductors running at about the same temperature at idle? You should have the amp fully reinstalled back into the heatsink so you can let it idle without risk to the FETs. Let it idle for about 10 minutes.
[COLOR=var(--YLNNHc)]I have checked the 2 inductors at idle at the same temperature, I will do a test drive after assembling the device.[/COLOR]
That was my thought as well. If you desolder the lead from the discolored inductor(Post# 14 shows it on the right) you should be able to power amp up without excessive current.
Where the missing output mosfets shorted? This is another indication that the Inductor may have shorted adjacent windings.
Where the missing output mosfets shorted? This is another indication that the Inductor may have shorted adjacent windings.