The amplifier is without output fets...anybony knows the codes...i mean irf.....what or something?
I ll post tomorrow output pulses...i have problem at 5 fets pulse...the driver card is every single transistor ok...
If it uses a driver board that has two MPSA42s in locations Q124/125, they should be replaced.
If it uses a different driver board, post a photo.
If it uses a different driver board, post a photo.
all right....i have irfb31n20d...thanks Mario..the driver board uses two MPSA42S....so i il replace them anyway....thank you too Perry...i ll post the waves without fets...only the drive pulses...
Install a 1000pf cap across pads 1 and 3 (on one FET location, for testing). That should give you a clean signal.
now with one fet per bank(one left,one right) the left one that i add the capacitor...is getting pretty hot...
Are the 31n20s that you have from an authorized dealer?
The cap was only for testing. Don't leave it in with the FETs.
The cap was only for testing. Don't leave it in with the FETs.
- Status
- Not open for further replies.