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Weird. After a day of brown outs, power up and down, these monitors power up oscillating. They are biamped, and the woofer stage oscillates at about 1 megahz. But if I run it through a bout 5 or 2 power cycles, I can get it to come up without oscillating!. And both of them do this. Very odd. Anyone have any ideas? Nothing obviously wrong on the up side (power supply and amp) of the board, I'm about to take the board off and check out the small signal stuff underneath....
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making 63 and 66 T-bird pickups at ThunderBucker Ranch -
https://schematicscom.blogspot.com/2016/08/behringer-b2031-schematic-active-2-way.html
https://www.synthxl.com/behringer-b2031-2/
Schematics
https://www.yumpu.com/xx/document/view/62864632/behringer-p0252-b2031a-service-manual
Behringer P0252 B2031A Service Manual
1)
Check caps in filtration +/- VCC and +/- 15V
It's All Over Now -
When it does oscillate, does it do so continuously, or is it just for a moment at startup?"I took a photo of my ohm meter... It didn't help." Enzo 8/20/22Comment
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Once it starts oscillating, it just keeps on going. If you try 5 or 6 restarts, it sometimes will operate normally.making 63 and 66 T-bird pickups at ThunderBucker RanchComment
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