2008 GX470 with Nav / Mark Levinson amp
ML Amp would work for various time periods before slowly losing volume with a light crackle noise for 5-10 seconds, and then would go into protection mode/ shut down.. After a few minutes of the car sitting powered off, starting it back up, the ML amp would work again for a few minutes until it did the same thing and would shut down again.
After a bunch of forum reading, I assumed it was just the dreaded failed amp.. Thus I called United Radio and sent them the unit to test/repair.
United Radio tech calls me and says no trouble found with the amp.. He ran it for a while and does not see any issues.
He then mentions that I may have a bad speaker where ohm readings less than 6 ohms may cause the amp to shut down.
Before I start tearing things apart, I'm looking for advise where to start testing. I don't see any pin out diagrams from the Amp to Speakers where I could test ohms from the harness without having to go directly to the speakers.
If I do need to pull door panels off to test, does it make sense to unplug the speakers and try running the amp for periods of time to try to find the issue by process of elimination, or will just a multimeter ohm test tell me enough ? Lastly, I cant seem to confirm the Ohms for the sub. Is that 8ohms as well
Appreciate any and all help as I yearn to get my audio working again.
ML Amp would work for various time periods before slowly losing volume with a light crackle noise for 5-10 seconds, and then would go into protection mode/ shut down.. After a few minutes of the car sitting powered off, starting it back up, the ML amp would work again for a few minutes until it did the same thing and would shut down again.
After a bunch of forum reading, I assumed it was just the dreaded failed amp.. Thus I called United Radio and sent them the unit to test/repair.
United Radio tech calls me and says no trouble found with the amp.. He ran it for a while and does not see any issues.
He then mentions that I may have a bad speaker where ohm readings less than 6 ohms may cause the amp to shut down.
Before I start tearing things apart, I'm looking for advise where to start testing. I don't see any pin out diagrams from the Amp to Speakers where I could test ohms from the harness without having to go directly to the speakers.
If I do need to pull door panels off to test, does it make sense to unplug the speakers and try running the amp for periods of time to try to find the issue by process of elimination, or will just a multimeter ohm test tell me enough ? Lastly, I cant seem to confirm the Ohms for the sub. Is that 8ohms as well
Appreciate any and all help as I yearn to get my audio working again.