Hifonics XXV-Cyclops repair - Page 2

Deadly Sones · 07:56 PM

It is turning on everytime without clicking back off now, no protection lights, but no oscillation and 60v dc on output terminals. It pulling about 3.0amps with the limiter in place

Perry Babin · 29th January 2013, 07:55 PM

What happened to the 40v of DC on the speaker terminals? That should have deflected the trace by nearly 1 full division.

Deadly Sones · 08:07 PM

thats what I meant... 60vdc in the speaker terminals... it might have been that high from the start

Deadly Sones · 29th January 2013, 08:04 PM

First pic is reading with prob on center leg of output transistor.

Second pic is reading with prob on 3rd leg

Third pic is probe on + speaker termial

4th pick is with probe on - speaker terminal

Deadly Sones · 29th January 2013, 08:08 PM

I have to go grab my son... I'll be back soon, thanks as always Perry.

Perry Babin · 29th January 2013, 08:18 PM

Which audio driver board is this amp using?

Deadly Sones · 29th January 2013, 08:19 PM

DMW3640NHV-v30

Perry Babin · 29th January 2013, 08:22 PM

If you've confirmed that all outputs are OK and none have broken legs, post the DC voltage on all terminals of the driver board. Place the black probe on the negative speaker terminal.

Deadly Sones · 09:41 PM

I don't see any broken legs and they all test OK in the circuit. I haven't removed them to test... there are no shorts and they all pretty much read the same.

I have the following voltages on the output driver card pins.

1: -60v
2: -60v
3: -64v
4: -54.6v
5: -63.7v
6: -63.1
7: -63.5
8: 1.335
9: 5.03
10: -5.31
11: 0.000
12: -5.10
13: 5.0
14: 7.267
15: -63.5
16: -63.1
17: -63.5
18: -54.4
19: -63.6
20: -60.1
21: -60.2

Should I pull it out of the case and remove the outputs and test out of the circuit?

Perry Babin · 29th January 2013, 11:22 PM

I think pin 14 should be at 15v. Check the regulator feeding it.

29th January 2013, 07:54 PM	#11
Deadly Sones diyAudio Member Join Date: Feb 2011 Location: Windsor, Ontario	It is turning on everytime without clicking back off now, no protection lights, but no oscillation and 60v dc on output terminals. It pulling about 3.0amps with the limiter in place Last edited by Deadly Sones; 29th January 2013 at 07:56 PM.

29th January 2013, 07:55 PM	#12
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	What happened to the 40v of DC on the speaker terminals? That should have deflected the trace by nearly 1 full division. __________________ Links >> Basic Car Audio Amp Repair * Basic Car Audio Electronics * New Site * Basic Switching Power Supply Design * Basic Computer Skills << Links

29th January 2013, 07:58 PM	#13
Deadly Sones diyAudio Member Join Date: Feb 2011 Location: Windsor, Ontario	thats what I meant... 60vdc in the speaker terminals... it might have been that high from the start Last edited by Deadly Sones; 29th January 2013 at 08:07 PM.

29th January 2013, 08:18 PM	#16
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	Which audio driver board is this amp using? __________________ Links >> Basic Car Audio Amp Repair * Basic Car Audio Electronics * New Site * Basic Switching Power Supply Design * Basic Computer Skills << Links

29th January 2013, 08:22 PM	#18
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	If you've confirmed that all outputs are OK and none have broken legs, post the DC voltage on all terminals of the driver board. Place the black probe on the negative speaker terminal. __________________ Links >> Basic Car Audio Amp Repair * Basic Car Audio Electronics * New Site * Basic Switching Power Supply Design * Basic Computer Skills << Links


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29th January 2013, 08:08 PM	#15
Deadly Sones diyAudio Member Join Date: Feb 2011 Location: Windsor, Ontario	I have to go grab my son... I'll be back soon, thanks as always Perry.

29th January 2013, 08:19 PM	#17
Deadly Sones diyAudio Member Join Date: Feb 2011 Location: Windsor, Ontario	DMW3640NHV-v30

29th January 2013, 09:38 PM	#19
Deadly Sones diyAudio Member Join Date: Feb 2011 Location: Windsor, Ontario	I don't see any broken legs and they all test OK in the circuit. I haven't removed them to test... there are no shorts and they all pretty much read the same. I have the following voltages on the output driver card pins. 1: -60v 2: -60v 3: -64v 4: -54.6v 5: -63.7v 6: -63.1 7: -63.5 8: 1.335 9: 5.03 10: -5.31 11: 0.000 12: -5.10 13: 5.0 14: 7.267 15: -63.5 16: -63.1 17: -63.5 18: -54.4 19: -63.6 20: -60.1 21: -60.2 Should I pull it out of the case and remove the outputs and test out of the circuit? Last edited by Deadly Sones; 29th January 2013 at 09:41 PM.

29th January 2013, 11:22 PM	#20
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	I think pin 14 should be at 15v. Check the regulator feeding it. __________________ Links >> Basic Car Audio Amp Repair * Basic Car Audio Electronics * New Site * Basic Switching Power Supply Design * Basic Computer Skills << Links

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