I have successfully acquired all the new IRS2092S components, along with the necessary resistors and diodes.
I have installed all components, and the device powers on with the clip LED remaining illuminated. Both MUR1620CTRG and MUR1620CT are equipped with PWM on pin 1 and 3 and -46 pin 3 on CTR and +52 pin 3 on CT and the output FETs has PWM. The current draw is measured at 1.4 amps. While there is no PWM signal on the power FETs but voltage is present -46 + 52 alternating FETS. However, the power supply driver, IR4427, does have PWM functionality.
I have installed all components, and the device powers on with the clip LED remaining illuminated. Both MUR1620CTRG and MUR1620CT are equipped with PWM on pin 1 and 3 and -46 pin 3 on CTR and +52 pin 3 on CT and the output FETs has PWM. The current draw is measured at 1.4 amps. While there is no PWM signal on the power FETs but voltage is present -46 + 52 alternating FETS. However, the power supply driver, IR4427, does have PWM functionality.
Is very strange.
Let's go step by step.
If I'm not mistaken, this amplifier is managed by an MCU, or at least the ones I repaired (with the same board) had an MCU that manages everything (power supply and protections, so also the lighting of the 3 LEDs).
If so, it is very likely that you do not see any signal because the power supply is regulating its duty cycle to allow you to always have the same rail voltage.
Please, adjust your battery voltage to 10 volts, this will allow you to force the duty cycle to about 49% and you will be able to observe the switching signal both on the gates of the power mosfets, and on their DRAIN (obviously much larger and more defined).
To support my thesis, is that you have never had power supply problems on this amplifier, but only on the audio side.
Right?
Once you've done that, the strange thing is that your rail is not perfectly symmetrical, this makes me think that a phenomenon called BUS PUMPING is occurring, where the class D stages do not work properly and raise one of the two rails a little over their threshold.
I recommend you keep an eye on this phenomenon during a hard work session of the amplifier.
As for the yellow LED on, I ask you, are all 4 channels working correctly?
Do they all have the same switching frequency?
Do all 4 channels have perfect audio at their output?
In this amplifier, only one of the 4 channels, acts as an indicator to the MCU, that everything is working, so if that channel is not working or not working properly, the MCU interprets it as a problem, turns on the orange light and maybe mutes all 4 channels.
But if you have the CARRIER signal on all channels, we need to dig a bit to understand.
Let's go step by step.
If I'm not mistaken, this amplifier is managed by an MCU, or at least the ones I repaired (with the same board) had an MCU that manages everything (power supply and protections, so also the lighting of the 3 LEDs).
If so, it is very likely that you do not see any signal because the power supply is regulating its duty cycle to allow you to always have the same rail voltage.
Please, adjust your battery voltage to 10 volts, this will allow you to force the duty cycle to about 49% and you will be able to observe the switching signal both on the gates of the power mosfets, and on their DRAIN (obviously much larger and more defined).
To support my thesis, is that you have never had power supply problems on this amplifier, but only on the audio side.
Right?
Once you've done that, the strange thing is that your rail is not perfectly symmetrical, this makes me think that a phenomenon called BUS PUMPING is occurring, where the class D stages do not work properly and raise one of the two rails a little over their threshold.
I recommend you keep an eye on this phenomenon during a hard work session of the amplifier.
As for the yellow LED on, I ask you, are all 4 channels working correctly?
Do they all have the same switching frequency?
Do all 4 channels have perfect audio at their output?
In this amplifier, only one of the 4 channels, acts as an indicator to the MCU, that everything is working, so if that channel is not working or not working properly, the MCU interprets it as a problem, turns on the orange light and maybe mutes all 4 channels.
But if you have the CARRIER signal on all channels, we need to dig a bit to understand.