There are 24 power supply fets in the amp .
When checking for drive signal I only get drive on half the fets .
Is this normal for this amp or should there be drive Signals on all of the fets ?
When checking for drive signal I only get drive on half the fets .
Is this normal for this amp or should there be drive Signals on all of the fets ?
It looks like either the PNP driver is leaking or the NPN is open, assuming that it uses an EF pair.
I’m replaced the drivers .
Here is what I get now this is on both all banks .
Does these appear to look correct ?
And also the original drivers were A1023/C1027
I replaced them with A1275/C3228. Will these work in the amp since the bd139/140 are to tall to fit under the driverboard
Here is what I get now this is on both all banks .
Does these appear to look correct ?
And also the original drivers were A1023/C1027
I replaced them with A1275/C3228. Will these work in the amp since the bd139/140 are to tall to fit under the driverboard
