Goodnight,
Someone will have the soundstream tarantula tx2.1500 diagram because the entire source is burned and I cannot recognize the drive transistors
Someone will have the soundstream tarantula tx2.1500 diagram because the entire source is burned and I cannot recognize the drive transistors
Good afternoon,
I managed to solve the drive transistors now I have the amplifier in protection since the tl494 is not oscillating these are the voltages in the tl494 what I do not know is that it may be causing the protection since the pin16 reaches an npn transistor which I pick it up and the protection goes away.
Pin1 0v
Pin2 4.94V
Pin3 4.54V
Pin4 0 V
Pin5 1.45V
Pin6 3.56V
Pin7 0V
Pin8 12V
Pin9 0V
Pin10 0V
Pin11 12V
Pin12 12V
Pin13 4.94V
Pin14 4.94V
Pin15 2.02V
Pin16 4.04V
I managed to solve the drive transistors now I have the amplifier in protection since the tl494 is not oscillating these are the voltages in the tl494 what I do not know is that it may be causing the protection since the pin16 reaches an npn transistor which I pick it up and the protection goes away.
Pin1 0v
Pin2 4.94V
Pin3 4.54V
Pin4 0 V
Pin5 1.45V
Pin6 3.56V
Pin7 0V
Pin8 12V
Pin9 0V
Pin10 0V
Pin11 12V
Pin12 12V
Pin13 4.94V
Pin14 4.94V
Pin15 2.02V
Pin16 4.04V
If you have the tutorial, PS troubleshooting page, item 44. If not, find and lift Q87 or install the FETs.
Thanks Perry I still do not have the tutorial and precisely that is the transistor that I mention in post 2 when I lift it I have a nice square wave I understand then that by placing all the mosfet of the source the amplifier must turn on correctly or I am wrong
The amp has protection to shut down when there is no rail voltage. Rail voltage can't build without the FETs in the circuit.
Thanks Perry I was looking for a problem where there was not the amplifier turned on correctly however I see that a zener is needed in location ZD301 is the same as those with F9 marked?