Regulator problem fixed .
Now I have another problem .
If I leave the audio driverboard out of the amp it will power up fine
If I install the audio driverboard the amp protects .
I checked the driver ic’s and they check fine is there anything else on these boards that will make the amp protect ?
Now I have another problem .
If I leave the audio driverboard out of the amp it will power up fine
If I install the audio driverboard the amp protects .
I checked the driver ic’s and they check fine is there anything else on these boards that will make the amp protect ?
Attachments
I replaced all of the ic’s on the audio driver board .
Also replaced all of the smd transistors on the driverboard with the exception of the ones labeled max .
Amp will power up and idle perfectly without the audio driver board installed
If I put the audio driverboard in the amp it will
Power up for about 20 secs then protect and blow an output.
The original problem was that a speaker wire got grounded out to the case of the amp .
Any ideas on what to check ?
Also replaced all of the smd transistors on the driverboard with the exception of the ones labeled max .
Amp will power up and idle perfectly without the audio driver board installed
If I put the audio driverboard in the amp it will
Power up for about 20 secs then protect and blow an output.
The original problem was that a speaker wire got grounded out to the case of the amp .
Any ideas on what to check ?
Some more messing with this amp .
If I power the amp up after sitting awhile it will protect if I cycle the remote wire 5 or 6 times the amp will power up and play clean audio .
Amp will play about 3 mins clean audio then it will protect again if I cycle the remote wire again 5 or 6 times it will play clean audio again .
Any ideas what might cause this ?
If I power the amp up after sitting awhile it will protect if I cycle the remote wire 5 or 6 times the amp will power up and play clean audio .
Amp will play about 3 mins clean audio then it will protect again if I cycle the remote wire again 5 or 6 times it will play clean audio again .
Any ideas what might cause this ?
Sorry I worded that wrong .
The voltage measured directly across the speaker terminals is 0.1 volts
As soon as the amp protects and the really clicks I bet a 4 volt spike across the output terminals
I get a voltage spike across speaker terminals when the amp protects and install drops back down to 0 volts
The voltage measured directly across the speaker terminals is 0.1 volts
As soon as the amp protects and the really clicks I bet a 4 volt spike across the output terminals
I get a voltage spike across speaker terminals when the amp protects and install drops back down to 0 volts
0.2 ohms on both .
The problem I’m having now is the regulated voltage is not right .
From the output terminal of the positive regulator to the positive terminal of opamp I get 0.2 ohms
Negative regulator output to negative terminal of opamp I get 0.2 ohms
If I use the ground leg of the regulators I get +- 15 volts on the regulators .
On the opamps them selfs on pin 4 I get -27.01
On pin 8 I get 3.08
The problem I’m having now is the regulated voltage is not right .
From the output terminal of the positive regulator to the positive terminal of opamp I get 0.2 ohms
Negative regulator output to negative terminal of opamp I get 0.2 ohms
If I use the ground leg of the regulators I get +- 15 volts on the regulators .
On the opamps them selfs on pin 4 I get -27.01
On pin 8 I get 3.08
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