Hi all,
I have a Kicker Zr360 stuck in protect mode showing yellow led lit.
I tested the output transistors and they all read 022.2 ohms when I place the meter probes on the 2 outer legs causing the meter to beep like when it sees zero ohms
The anp doesn't draw any current or heat up.
Any advice appreciated, thanks
I have a Kicker Zr360 stuck in protect mode showing yellow led lit.
I tested the output transistors and they all read 022.2 ohms when I place the meter probes on the 2 outer legs causing the meter to beep like when it sees zero ohms
The anp doesn't draw any current or heat up.
Any advice appreciated, thanks
22 ohms is correct.
Check all power supply mosfets Q39-42-RFG70N06
Check with an ohmmeter using black probe on speaker terminal ground and the eight pins next to the header socket for the xover module. Post results
There may be a perforated thermal pad-Check with blsck probe on speaker ground to the output and power supply mosfet tabs.
post pics of the board. You can troubleshoot outside of chassis but its very critical that the bias pots R20 and R59 be turned all the way counter clockwise, leaving no bias voltage. Any bias voltage will cause the outputs to get hot and fail. If you have any doubt asked before you power up the board!!!
Check all power supply mosfets Q39-42-RFG70N06
Check with an ohmmeter using black probe on speaker terminal ground and the eight pins next to the header socket for the xover module. Post results
There may be a perforated thermal pad-Check with blsck probe on speaker ground to the output and power supply mosfet tabs.
post pics of the board. You can troubleshoot outside of chassis but its very critical that the bias pots R20 and R59 be turned all the way counter clockwise, leaving no bias voltage. Any bias voltage will cause the outputs to get hot and fail. If you have any doubt asked before you power up the board!!!
Thanks for the quick indepth reply PZB,
I found the problem, F1 had snapped both legs, replaced and all working nicely.
I found the problem, F1 had snapped both legs, replaced and all working nicely.