I'm sorry but you're going to have to write more precisely. Complete sentences, clear descriptions. I'm not sure what you posted.
sorry the spell check on my phone keep changing the words.
1 -72.5
2 -72.5
3 -72.5
4 -72.5
5 -60
6 -72.3
7 -60
8 -60
all the reading are dc voltage. with the red test led on the pins 1-8 and the black test led on the ground.
1 -72.5
2 -72.5
3 -72.5
4 -72.5
5 -60
6 -72.3
7 -60
8 -60
all the reading are dc voltage. with the red test led on the pins 1-8 and the black test led on the ground.
Was the black probe on the amp's main ground terminal?
Do all of the NE5532s have similar voltage readings?
Doing this on a computer would be much easier.
Do all of the NE5532s have similar voltage readings?
Doing this on a computer would be much easier.
yes the black probe was on the amp's ground terminal
no 4 of ne5532 are showing pin 1 (-1.26) pine 2 (-2.68) pine 3 (-2.68) pine 4 (-2.68) pine 5 (1.26) pine 6 (-2.28) pin 7 (-1.84) pine 8 (-1.11). the other 4 ne5532 read pin 1-4 (-3.38) 5 (-2.26) and 6,7,8, (-1.68).
post #24 the reading are from ne5532 that is up buy the transistor near this two thick buss bar.
no 4 of ne5532 are showing pin 1 (-1.26) pine 2 (-2.68) pine 3 (-2.68) pine 4 (-2.68) pine 5 (1.26) pine 6 (-2.28) pin 7 (-1.84) pine 8 (-1.11). the other 4 ne5532 read pin 1-4 (-3.38) 5 (-2.26) and 6,7,8, (-1.68).
post #24 the reading are from ne5532 that is up buy the transistor near this two thick buss bar.
If you're referring R281 and R282, those aren't bussbars, they're shunt resistors. The IC near them isn't an op-amp. It's a comparator. If it's an NE5532, it's the wrong IC. It should be an LM311.
It appears that the low voltage transformer isn't producing sufficient output. The transistor driving the transformer may be defective or it could be the driver IC. Without a scope, it's difficult to determine which is the problem.
There may be other problems as well.
It appears that the low voltage transformer isn't producing sufficient output. The transistor driving the transformer may be defective or it could be the driver IC. Without a scope, it's difficult to determine which is the problem.
There may be other problems as well.
what do the low voltage transformer look like? is it the yellow square by the speaker output? I don't mind replacing the driver IC its 8 of the looks like>to make shore I am under standing this right, Are the driver IC the ne5532 that are near the crossover area of the amp? my scoop should be in tomorrow or Friday.
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