16-st1500d memphis

timwebb · 23rd June 2010, 04:56 AM

does this amp use 22 ohm resistors? it been worked on before so part are missing and stuff.the amp stays in protect but the green light comes on and off ?

timwebb · 23rd June 2010, 05:07 AM

here's the power supply

Perry Babin · 23rd June 2010, 06:32 AM

22 ohm gate resistors in the power supply are probably right. I don't have anything on the 1500 but the 1000 and the 300 both use 22 ohm resistors.

timwebb · 23rd June 2010, 06:36 AM

i pulled the MUR3040PT and it came out of protection but the fets heated up

Perry Babin · 23rd June 2010, 06:50 AM

Are the power supply driver transistors OK?

timwebb · 23rd June 2010, 07:16 AM

yea i it had solder across one of the drivers but when i put the MUR3040PT back in it still goes into protection im tracing it back now

Perry Babin · 23rd June 2010, 07:41 AM

What parts have been replaced in the output section of the amp?

timwebb · 23rd June 2010, 03:17 PM

the rectifiers have been taken out and a few 640 have been pulled.its power up fine with out the MUR3040PT in

Perry Babin · 23rd June 2010, 03:22 PM

Did you check the outputs?

Are the rectifiers identical?

timwebb · 23rd June 2010, 03:31 PM

the rectifiers look the same but they were off the amp but the big one in the pic looks to be on the second transformer.i check the out puts they was fine but my meter actin funny so ima pull them and test them

23rd June 2010, 04:56 AM	#1
timwebb diyAudio Member Join Date: Jan 2010 Location: memphis tn	16-st1500d memphis does this amp use 22 ohm resistors? it been worked on before so part are missing and stuff.the amp stays in protect but the green light comes on and off ?

23rd June 2010, 06:32 AM	#3
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	22 ohm gate resistors in the power supply are probably right. I don't have anything on the 1500 but the 1000 and the 300 both use 22 ohm resistors. __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

23rd June 2010, 06:50 AM	#5
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	Are the power supply driver transistors OK? __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

23rd June 2010, 07:41 AM	#7
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	What parts have been replaced in the output section of the amp? __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

23rd June 2010, 03:22 PM	#9
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	Did you check the outputs? Are the rectifiers identical? __________________ 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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23rd June 2010, 06:36 AM	#4
timwebb diyAudio Member Join Date: Jan 2010 Location: memphis tn	i pulled the MUR3040PT and it came out of protection but the fets heated up

23rd June 2010, 07:16 AM	#6
timwebb diyAudio Member Join Date: Jan 2010 Location: memphis tn	yea i it had solder across one of the drivers but when i put the MUR3040PT back in it still goes into protection im tracing it back now

23rd June 2010, 03:17 PM	#8
timwebb diyAudio Member Join Date: Jan 2010 Location: memphis tn	the rectifiers have been taken out and a few 640 have been pulled.its power up fine with out the MUR3040PT in

23rd June 2010, 03:31 PM	#10
timwebb diyAudio Member Join Date: Jan 2010 Location: memphis tn	the rectifiers look the same but they were off the amp but the big one in the pic looks to be on the second transformer.i check the out puts they was fine but my meter actin funny so ima pull them and test them

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