Mtx 2300

mike49504 · 2nd January 2010, 07:19 AM

I read some of the post's you helped with.

Ok this is the first of 5

When powerd up amp sends 29.68 of dc out on left channel and 0.29 on the right.

wondering what this might be??

Perry Babin · 2nd January 2010, 07:23 AM

Does the left channel produce audio?

It sounds like you have shorted outputs or defective driver components in the right channel. You also need to check the 0.1 ohm resistors in the right channel.

mike49504 · 2nd January 2010, 07:26 AM

Yes left channel produces audio but it throws the cone of the sub alomst out of the basket

Perry Babin · 2nd January 2010, 07:29 AM

I'm sorry, I got the channels reversed.

Does the right channel produce clean audio?

mike49504 · 2nd January 2010, 07:33 AM

right channel is dead no output

Perry Babin · 2nd January 2010, 07:40 AM

Do you have any shorted outputs or open 0.1 ohm resistors?

mike49504 · 2nd January 2010, 07:48 AM

the crazy thing is it saying the power supply fets are blown they are using
p60n06 for the fets and its saying they are shorted from leg1 to leg 3

Perry Babin · 2nd January 2010, 08:02 AM

This amp isn't like other amps. The power supply FETs are driven by a transformer. The driver transformer's windings are connected across 1 and 3 on the power supply FETs.

mike49504 · 2nd January 2010, 08:08 AM

all the outputs are testing fine. Where are the 1 ohm resistors located? what are the color bands

Perry Babin · 2nd January 2010, 08:16 AM

0.1 near the outputs. Brown black silver gold.

2nd January 2010, 07:19 AM	#1
mike49504 diyAudio Member Join Date: Sep 2006	Mtx 2300 I read some of the post's you helped with. Ok this is the first of 5 When powerd up amp sends 29.68 of dc out on left channel and 0.29 on the right. wondering what this might be??

2nd January 2010, 07:23 AM	#2
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	Does the left channel produce audio? It sounds like you have shorted outputs or defective driver components in the right channel. You also need to check the 0.1 ohm resistors in the right channel. __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

2nd January 2010, 07:29 AM	#4
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	I'm sorry, I got the channels reversed. Does the right channel 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

2nd January 2010, 07:40 AM	#6
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	Do you have any shorted outputs or open 0.1 ohm resistors? __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

2nd January 2010, 08:02 AM	#8
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	This amp isn't like other amps. The power supply FETs are driven by a transformer. The driver transformer's windings are connected across 1 and 3 on the power supply FETs. __________________ 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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2nd January 2010, 07:26 AM	#3
mike49504 diyAudio Member Join Date: Sep 2006	Yes left channel produces audio but it throws the cone of the sub alomst out of the basket

2nd January 2010, 07:33 AM	#5
mike49504 diyAudio Member Join Date: Sep 2006	right channel is dead no output

2nd January 2010, 07:48 AM	#7
mike49504 diyAudio Member Join Date: Sep 2006	the crazy thing is it saying the power supply fets are blown they are using p60n06 for the fets and its saying they are shorted from leg1 to leg 3

2nd January 2010, 08:08 AM	#9
mike49504 diyAudio Member Join Date: Sep 2006	all the outputs are testing fine. Where are the 1 ohm resistors located? what are the color bands

2nd January 2010, 08:16 AM	#10
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	0.1 near the outputs. Brown black silver gold. __________________ 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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