Power acoustiic SP2X-1600

mike49504 · 25th February 2010, 03:55 AM

I recieved this amp in for repair. The amp is in protection. I pulled the rectifiers and amp doesnt go into protection. Ive checked the outputs,diodes,and transistors but everything checks fine.

Wondering what i should check at this point

Perry Babin · 25th February 2010, 04:05 AM

Can you post a photo of the board?

mike49504 · 25th February 2010, 04:54 AM

Here's the pic's of the board

Perry Babin · 25th February 2010, 05:34 AM

I think I have something similar at the shop to use as a reference. I'll check when I go there tomorrow.

mike49504 · 25th February 2010, 05:55 AM

Ok THANKS PERRY

Perry Babin · 25th February 2010, 09:37 PM

There's an A1266 transistor (likely near pin 16 of the 494). It's middle leg is connected to pin 16 of the 494. Remove it from the circuit. Power up the amp (all components clamped and 10 amp fuse inline). Does the amp power up and produce clean audio?

mike49504 · 27th February 2010, 04:37 AM

Perry i had to reflow all the solder on the board. And now the amp works perfect.

The guy told me it sounds better and seems to be working better then when he bought it

25th February 2010, 03:55 AM	#1
mike49504 diyAudio Member Join Date: Sep 2006	Power acoustiic SP2X-1600 I recieved this amp in for repair. The amp is in protection. I pulled the rectifiers and amp doesnt go into protection. Ive checked the outputs,diodes,and transistors but everything checks fine. Wondering what i should check at this point

25th February 2010, 04:05 AM	#2
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	Can you post a photo of the board? __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

25th February 2010, 05:34 AM	#4
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	I think I have something similar at the shop to use as a reference. I'll check when I go there tomorrow. __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

25th February 2010, 09:37 PM	#6
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	There's an A1266 transistor (likely near pin 16 of the 494). It's middle leg is connected to pin 16 of the 494. Remove it from the circuit. Power up the amp (all components clamped and 10 amp fuse inline). Does the amp power up and produce clean audio? __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

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25th February 2010, 05:55 AM	#5
mike49504 diyAudio Member Join Date: Sep 2006	Ok THANKS PERRY

27th February 2010, 04:37 AM	#7
mike49504 diyAudio Member Join Date: Sep 2006	Perry i had to reflow all the solder on the board. And now the amp works perfect. The guy told me it sounds better and seems to be working better then when he bought it

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