Did you put the ground on both channels? Because if you see the right channel the wire is not like the left channel. missing ground from input. move the ground from speaker of the right channel and put the ground for the input where the speaker ground is now and get a wire from "0" power supply to there.
Once again you're dead right. I'll go and fix that with a red face.
lol...Make sure you do not have a "floating ground". it should be to the chassis.
Ok. So although that was another mistake, unfortunatly it is not the mistake as it is a common ground between speaker and signal. Changing that wire has made it conform to the diagram but since it was already connected to ground it has not changed the problem. I have also run the speaker/input ground to the 0V of the power supply but to no avail.
Ok. So although that was another mistake, unfortunatly it is not the mistake as it is a common ground between speaker and signal. Changing that wire has made it conform to the diagram but since it was already connected to ground it has not changed the problem. I have also run the speaker/input ground to the 0V of the power supply but to no avail.
ok. if you fallow all from schematic, now is time to check those LM3886. if you have "spare" just replace one to see.
I don't have any spares as it came as a kit and I won't have access to any parts for a few days. I'm just relying on the intelligence of others at this point.
Call me crazy here...but where are those four resistors by power supply?
Those resistors are only to be installed if you plan to use the 15V rail for a pre-amp or something.
ok, if you mesured the voltages 35v V+ and 35v V- and they are there and checked all wires and connections. now is time to check those LM3886.
I'm reading the data sheet now. I have no idea about how one goes about testing them though. The only issue I have with testing them both is that it is rather unlikley that both of them are faulty. If only one channel was having the issue it would be easy but because both are doing the same thing at the same time, it suggests that it's probably a power supply issue. What are your thoughts?
I'm reading the data sheet now. I have no idea about how one goes about testing them though. The only issue I have with testing them both is that it is rather unlikley that both of them are faulty. If only one channel was having the issue it would be easy but because both are doing the same thing at the same time, it suggests that it's probably a power supply issue. What are your thoughts?
You are suppose to have V- and V+ voltages and they should be 35vdc. if you got them, it means it is not the power supply!
pin 1 to ground should be around +34 vdc and pin 4 to ground should be -34vdcSo I've measured pins 1 and 4 with reference to ground. Pin 1 (V+) is around 32V. Pin 4 (Ground) is around 3.5V.
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