Amp will not power up ..
TL494
Pin 1:0
Pin 2:4.75
Pin 3:0.06
Pin 4:4.53
Pin 5:1.48
Pin 6:3.16
Pin 7:0
Pin 8:13.89
Pin 9:0.02
Pin 10:0
Pin 11:13.89
Pin 12:13.89
Pin 13:4.90
Pin 14:4.90
Pin 15:4.90
Pin 16:0
Atleast it appears to not be powering up no power light now voltage on the gate legs ..
Any ideas?
TL494
Pin 1:0
Pin 2:4.75
Pin 3:0.06
Pin 4:4.53
Pin 5:1.48
Pin 6:3.16
Pin 7:0
Pin 8:13.89
Pin 9:0.02
Pin 10:0
Pin 11:13.89
Pin 12:13.89
Pin 13:4.90
Pin 14:4.90
Pin 15:4.90
Pin 16:0
Atleast it appears to not be powering up no power light now voltage on the gate legs ..
Any ideas?
Replaced Q101 and tested voltages I get the same voltages on the new one..
There is an led lit on the board that says for service only..
Also Led 400 is lit .. Its right next to the op-amps in the output section..
Amp powers up but idle's around 8 amps of current draw not sure if thats normal for this amp..
There is an led lit on the board that says for service only..
Also Led 400 is lit .. Its right next to the op-amps in the output section..
Amp powers up but idle's around 8 amps of current draw not sure if thats normal for this amp..
Ok i replaced the following components:
D105
R119
R123
R127
Q109
Q111
Q108
R122
All of theese were defective..
Should i check anything else before powering it up?
Also Do you have an idea on why all of theese were defective ? Seems like alot of parts were bad in this one area
D105
R119
R123
R127
Q109
Q111
Q108
R122
All of theese were defective..
Should i check anything else before powering it up?
Also Do you have an idea on why all of theese were defective ? Seems like alot of parts were bad in this one area
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