Anyone familiar with these?
First unit of this nature I'm working on. Unit came in with FR and RL driver boards burnt (two middle cards). Removed both burnt DBs and powered up, had clean audio on other two channels (FL,RR). Amplifier has good rail and reg LV supplies.
Purchased two driver boards from a friend and installed. Powered up, now i've lost audio on the RR channel, clean audio only on FL channel.
I have R-R oscillation on output FETs for all four channels.
I have audio entering the DBs, on the three non working channels I'm seeing R-R oscillation at the speaker terminals but no audio.
Anyone familiar with these and willing to shed some light?
First unit of this nature I'm working on. Unit came in with FR and RL driver boards burnt (two middle cards). Removed both burnt DBs and powered up, had clean audio on other two channels (FL,RR). Amplifier has good rail and reg LV supplies.
Purchased two driver boards from a friend and installed. Powered up, now i've lost audio on the RR channel, clean audio only on FL channel.
I have R-R oscillation on output FETs for all four channels.
I have audio entering the DBs, on the three non working channels I'm seeing R-R oscillation at the speaker terminals but no audio.
Anyone familiar with these and willing to shed some light?
