Remove the outputs. Desolder the pads to ensure that there are no bridges.
Does the low impedance LED still light up?
Does the low impedance LED still light up?
Have you checked the outputs out of the board (including checking for leakage)?
Are they the original outputs?
Are they the original outputs?
Yes checked them out of the board several times And yes the are the orginal outouts (SSP45N20B).
If i take the driverboard out (U500) the light goes off.
If i take the driverboard out (U500) the light goes off.
Ok maybe it doesnt I didnt have the Main board plugged in all the way amps low ohms light is still on
with the driverboard removed heres what i have on the pads working left to right
1:0
2:0
3:4.99
4:0
5:0
6:36.20
7:0
8:10.22
other driver board pads
1:0
2:0
3:4.98
4:0
5:0
6:32.99
7:0
8:10.22
1:0
2:0
3:4.99
4:0
5:0
6:36.20
7:0
8:10.22
other driver board pads
1:0
2:0
3:4.98
4:0
5:0
6:32.99
7:0
8:10.22
Those seems to be OK. I'm assuming that the power supply FETs are still out of the circuit.
Does the blue pot near the filter caps (R624) appear to be centered (or close to centered)? Don't turn it.
Does the blue pot near the filter caps (R624) appear to be centered (or close to centered)? Don't turn it.
1:0
2:-4.57
3:12.32
4:11.19
5:0
6:13.11
7:0.26
8:0
9:12.78
10:0
R309 and R231 on this board got so hot they unsolderd themselfs from the board
2:-4.57
3:12.32
4:11.19
5:0
6:13.11
7:0.26
8:0
9:12.78
10:0
R309 and R231 on this board got so hot they unsolderd themselfs from the board
Double-check the boards to make sure that the headers are not misaligned.
What revision is this amp?
What revision is this amp?
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