When trying to power the amp up it will draw excessive current..
With the fets out i get a nice square wave on all gate pads..
I removed the rectifiers to disable the output section..
All drivers and fets test good in this amp with the rectifiers out when i try powering it up it draws 60 amps of current..
Any ideas?
With the fets out i get a nice square wave on all gate pads..
I removed the rectifiers to disable the output section..
All drivers and fets test good in this amp with the rectifiers out when i try powering it up it draws 60 amps of current..
Any ideas?
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It would be better if you could confirm that one is shorted. Did you try twisting it to see if the current draw changed?
I know it's not easy but if you are considering making a new transformer (which may be even more difficult), you should pull one of the other transformers and see if the problem follows the transformer.
I know it's not easy but if you are considering making a new transformer (which may be even more difficult), you should pull one of the other transformers and see if the problem follows the transformer.
Load them with a 1k resistor first from gate to drain. Make sure that the drive signal goes to within 1v of ground and that the dive signal doesn't slope too much near ground. Then from gate to source. Make sure that the drive signal swings at least 5v above ground (should swing to about 10v) and is relatively flat across the top.
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