memphis mojo driver card

timwebb · 25th April 2010, 02:57 PM

anyone ever rebuilt these i have two and the same transistors are burned out one both any help

Perry Babin · 25th April 2010, 09:56 PM

Photo of the driver board?

timwebb · 25th April 2010, 11:45 PM

the memphis 1000w sorry bad cam.

Perry Babin · 26th April 2010, 12:19 AM

Those are the PNP driver transistors for the power supply FETs When the PS FETs fail, it generally causes those to fail also.

timwebb · 26th April 2010, 12:47 AM

what are good replacements for them or just real ones im cleaning the driver card now what can i use?

Perry Babin · 26th April 2010, 01:33 AM

To clean the board, I'd use acetone with a toothbrush or cotton swabs.

The KSA1015 has been used (by others, I haven't used it) as a sub for the 1266. It appears to be virtually identical.

timwebb · 29th April 2010, 12:40 AM

i got the driver card fix it comes on now but goes into protect one mosfet in the powersupply keeps getting really hot fast could it be a short brand new fet's any help?

Perry Babin · 29th April 2010, 12:42 AM

Did you check each of the gate resistors to confirm that all were within tolerance?

timwebb · 29th April 2010, 12:44 AM

no forgot that ima do it now

timwebb · 1st May 2010, 03:32 AM

i changed them with new ones had some bad ones but its still going into protection and two of the irf 3205 are still getting hot.what im i over looking?

25th April 2010, 02:57 PM	#1
timwebb diyAudio Member Join Date: Jan 2010 Location: memphis tn	memphis mojo driver card anyone ever rebuilt these i have two and the same transistors are burned out one both any help

25th April 2010, 09:56 PM	#2
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	Photo of the driver board? __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

26th April 2010, 12:19 AM	#4
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	Those are the PNP driver transistors for the power supply FETs When the PS FETs fail, it generally causes those to fail also. __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

26th April 2010, 01:33 AM	#6
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	To clean the board, I'd use acetone with a toothbrush or cotton swabs. The KSA1015 has been used (by others, I haven't used it) as a sub for the 1266. It appears to be virtually identical. __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

29th April 2010, 12:42 AM	#8
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	Did you check each of the gate resistors to confirm that all were within tolerance? __________________ 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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26th April 2010, 12:47 AM	#5
timwebb diyAudio Member Join Date: Jan 2010 Location: memphis tn	what are good replacements for them or just real ones im cleaning the driver card now what can i use?

29th April 2010, 12:40 AM	#7
timwebb diyAudio Member Join Date: Jan 2010 Location: memphis tn	i got the driver card fix it comes on now but goes into protect one mosfet in the powersupply keeps getting really hot fast could it be a short brand new fet's any help?

29th April 2010, 12:44 AM	#9
timwebb diyAudio Member Join Date: Jan 2010 Location: memphis tn	no forgot that ima do it now

1st May 2010, 03:32 AM	#10
timwebb diyAudio Member Join Date: Jan 2010 Location: memphis tn	i changed them with new ones had some bad ones but its still going into protection and two of the irf 3205 are still getting hot.what im i over looking?

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