Crunch amp

mike49504 · 22nd January 2010, 04:47 AM

Im rebuilding the power supply in this amp. Put in all new fets, gate resistors a tl494, and some other resistors.

The drivers for the fets are a1013 wondering if i can sub theese so i can get this amp out of done

Perry Babin · 22nd January 2010, 04:54 AM

I don't know what you have in stock but if you have 2N6491s, you can use them (facing the opposite direction due to the reversed pin configuration).

mike49504 · 22nd January 2010, 04:55 AM

would a a1023 work?

Perry Babin · 22nd January 2010, 04:57 AM

Yes.

mike49504 · 22nd January 2010, 05:29 AM

Ok this can never be easy. the amp has 2 power supplys in it 1 for each channel.

One of the supply's its saying there is a short between legs 2 and 3 of the a1023 so now the fun part of tracking it down to see whats shorted that connects to it.

Perry Babin · 22nd January 2010, 05:40 AM

Bridged solder connection?

mike49504 · 22nd January 2010, 06:49 AM

Ok found a blown diode in the power supply now the amp idles perfect.

so im gonna finish putting it back together and see if i have sound.

22nd January 2010, 04:47 AM	#1
mike49504 diyAudio Member Join Date: Sep 2006	Crunch amp Im rebuilding the power supply in this amp. Put in all new fets, gate resistors a tl494, and some other resistors. The drivers for the fets are a1013 wondering if i can sub theese so i can get this amp out of done

22nd January 2010, 04:54 AM	#2
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	I don't know what you have in stock but if you have 2N6491s, you can use them (facing the opposite direction due to the reversed pin configuration). __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

22nd January 2010, 04:57 AM	#4
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	Yes. __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

22nd January 2010, 05:40 AM	#6
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	Bridged solder connection? __________________ 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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22nd January 2010, 04:55 AM	#3
mike49504 diyAudio Member Join Date: Sep 2006	would a a1023 work?

22nd January 2010, 05:29 AM	#5
mike49504 diyAudio Member Join Date: Sep 2006	Ok this can never be easy. the amp has 2 power supplys in it 1 for each channel. One of the supply's its saying there is a short between legs 2 and 3 of the a1023 so now the fun part of tracking it down to see whats shorted that connects to it.

22nd January 2010, 06:49 AM	#7
mike49504 diyAudio Member Join Date: Sep 2006	Ok found a blown diode in the power supply now the amp idles perfect. so im gonna finish putting it back together and see if i have sound.

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