I have a broken Hifonics XX-Chaos that needs repair.
One of the 2 x 8 Fets of the SPS is broken, together with its gate-resistor.
Lets assume that:
- the remaining 8 + 7 Fets of the SPS are okay
- the power stage of the amplifier is okay
Would it - FOR TEST PURPOSES ONLY - be okay to remove the broken Fet and run the amplifier, at limited output power, with:
- 8 Fets on one half of the transformers primary winding
- 7 Fets on the other half of the transformers primary winding
to check that everything else is working okay?
Or would the above lack of balance cause stair-casing of the transformer, causing the transformer to saturate, causing the Fet current to sharply increase, causing one or more Fets to fail?
Any experience based advice is greatly appreciated!
In addition: Does anyone have the schematics of the Hifonics XX-Chaos?
One of the 2 x 8 Fets of the SPS is broken, together with its gate-resistor.
Lets assume that:
- the remaining 8 + 7 Fets of the SPS are okay
- the power stage of the amplifier is okay
Would it - FOR TEST PURPOSES ONLY - be okay to remove the broken Fet and run the amplifier, at limited output power, with:
- 8 Fets on one half of the transformers primary winding
- 7 Fets on the other half of the transformers primary winding
to check that everything else is working okay?
Or would the above lack of balance cause stair-casing of the transformer, causing the transformer to saturate, causing the Fet current to sharply increase, causing one or more Fets to fail?
Any experience based advice is greatly appreciated!
In addition: Does anyone have the schematics of the Hifonics XX-Chaos?
I don't have the diagram.
It would be safe to run it with 15 FETs. The only time that it would cause a problem is if you run it into the lowest recommended load to full power. If you do that, it's likely to fail. Into a lighter load, it would likely survive, even when run to full power into that lighter load.
It would be safe to run it with 15 FETs. The only time that it would cause a problem is if you run it into the lowest recommended load to full power. If you do that, it's likely to fail. Into a lighter load, it would likely survive, even when run to full power into that lighter load.
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