When a signal is applied to this amp T200 and T201 is generating sound like a tweeter.I tried this amp on a sub speaker and i can hear the tweet sound in the background of the music being played.
How do i get these transformers to stop playing music?
How do i get these transformers to stop playing music?
On U2 with the black probe on leg 3 and the red on leg 1, measure the frequency. It should be about 80kHz.
It should not matter if there is audio input or not. 95K is OK if it remains there at all times. I wanted to make sure that the frequency wasn't down into the audible range.
Maybe Sean Kane will have some suggestions.
Maybe Sean Kane will have some suggestions.
There are 3 versions of this amp which one do you have?
Green board, blue board or red board? Could I please have the board number?
The last time I experienced this on a T30001bd it was a bad gate drive transformer and gate drive IC.
Green board, blue board or red board? Could I please have the board number?
The last time I experienced this on a T30001bd it was a bad gate drive transformer and gate drive IC.
The test point is the output of the triangle wave generator. It should have output whenever the amp is on.
board #pc-5445-c blue board
which ground i should used when checking for the wave form?
with no signal apply to the amp i got 0.000hz
which ground i should used when checking for the wave form?
with no signal apply to the amp i got 0.000hz
I think there may be a problem with your scope. This is the second amp that appears to be operating at too high a frequency. It appears to be off by about a factor of 10.
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