Electronics > Repair
Repairing JBL Eon 618s subwoofer - schematic needed (or two component values)
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cozza:
Also check R65, D17 and C86 (or the equivalent numbers on the circuit board) these provide the supply to the controller chip once the PSU is up and running.

If there is an fault here, the PSU will try try to start and then shutdown as there is not enough voltage to keep the L6599AD running.

Good luck, you might slow down it's journey to the landfill    :-DD

dexterkorgpa1x:
i ve checked all the diodes and transistors but i think is a pcb problem because i not have this PVCC on m case is r67 i have pulsing voltage 8-9v.  i check also the power resistors of 33k. i wont give up!
dexterkorgpa1x:
i have solved. i have found the trace on the second layer on the pcb to the mainpositive has intrerrupted to the HV positive. i have put a wire and  now switching! but clipping and shutdown for -.5 sec and the voltage on the gate pgnd in the gate H is 88-100v and the gate low is 6 v .i not know  what it happen
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