Hello! I'm working to this amp for repair. This amp goes to protect. output fets in good shape.
1. If I remove the Powersupply connector to both channels, it gives power and the not in protect mode.
2. If I remove left side side power connector the amp runs but removing the other connector the amp goes to protect.
I suspect that left channel has a problem but I tested the output fets and some driver transistor they are fine.
Can I remove all output fets and measure the gate voltage? from this I can able identify which channel has a problem. Is there fastest procedure to isolate the problem? this amp has a lot of wires and connections.
Someone please email me the schematics. armand_jr2001@yahoo.com
Thank you!
1. If I remove the Powersupply connector to both channels, it gives power and the not in protect mode.
2. If I remove left side side power connector the amp runs but removing the other connector the amp goes to protect.
I suspect that left channel has a problem but I tested the output fets and some driver transistor they are fine.
Can I remove all output fets and measure the gate voltage? from this I can able identify which channel has a problem. Is there fastest procedure to isolate the problem? this amp has a lot of wires and connections.
Someone please email me the schematics. armand_jr2001@yahoo.com
Thank you!
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Removing the outputs will open the feedback loop and will make virtually all voltages unreliable for troubleshooting. The exception will be the supply voltages.
You may have a leaky or open driver. Sometimes you can compare direct pin-pin, probe-probe placement readings with the other channel to find where there is a difference but sometimes you have to remove the transistors to get definitive readings.
You may have a leaky or open driver. Sometimes you can compare direct pin-pin, probe-probe placement readings with the other channel to find where there is a difference but sometimes you have to remove the transistors to get definitive readings.
Yeah, I removed output fets got unreliable readings.
hard to do pin to pin reading, because it goes to protect mode. Maybe removing those transistors will be an option.
Thank you for your help and support Sir!
how to bypass the protect mode to this amp?
I confused on this amp, even I removed both left and right power supply connectors, sometimes it protect and sometimes it's not.
I have tested the drivers and output stage of every channel but shows similar measurements and correct.
Now I suspecting the protect circuit itself has a problem.
I confused on this amp, even I removed both left and right power supply connectors, sometimes it protect and sometimes it's not.
I have tested the drivers and output stage of every channel but shows similar measurements and correct.
Now I suspecting the protect circuit itself has a problem.
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