usamike10
New Member
One day I turned on the system and audio slowly went down to nothing within 5 seconds.
I downloaded the schematic, did some checking and found that the -24vdc bleeds down as the +24vdc bleeds up. This all happens within 5 seconds of powering on.
I’m measuring on the filter caps c805 and c806.
I’ve opened the +/- 24 directly after the caps removing the load.
I’ve swapped the two filter caps with each other, tested the diodes supplying the +/- 24, and opened the 4 small ceramic caps that are in parallel with the bridge diodes.
Measuring on the filter caps now I have a stable -24 but the +24 climbs to upper +40’s before I power it down.
By opening the load for the +/- 24, is it normal to see the + side climb, seems odd? I’m running out of ideas for troubleshooting.
I downloaded the schematic, did some checking and found that the -24vdc bleeds down as the +24vdc bleeds up. This all happens within 5 seconds of powering on.
I’m measuring on the filter caps c805 and c806.
I’ve opened the +/- 24 directly after the caps removing the load.
I’ve swapped the two filter caps with each other, tested the diodes supplying the +/- 24, and opened the 4 small ceramic caps that are in parallel with the bridge diodes.
Measuring on the filter caps now I have a stable -24 but the +24 climbs to upper +40’s before I power it down.
By opening the load for the +/- 24, is it normal to see the + side climb, seems odd? I’m running out of ideas for troubleshooting.