brutus brz1200

timwebb · 19th June 2011, 02:47 AM

i bought this amp and the has a problem.the power supply transistors good but the gate resistors go up in smoke on one side. i checked the driver transistors and they were cracked so i changed them. but i still cant get a signal on the other side.its dead

Perry Babin · 19th June 2011, 03:43 AM

Unless this amp has an unusual drive circuit, there's virtually nothing other than defective FETs that will cause the gate resistors to burn.

timwebb · 19th June 2011, 03:55 AM

i pulled the fet's out and replace the drive transistors but one side is still dead.the other side is perfect.

Perry Babin · 19th June 2011, 04:02 AM

'Dead' and 'one side and the other side' isn't very specific. Precisely what do you mean? Be descriptive. It would be best if you posted a photo of the board as it is now and marked to show what you mean.

19th June 2011, 02:47 AM	#1
timwebb diyAudio Member Join Date: Jan 2010 Location: memphis tn	brutus brz1200 i bought this amp and the has a problem.the power supply transistors good but the gate resistors go up in smoke on one side. i checked the driver transistors and they were cracked so i changed them. but i still cant get a signal on the other side.its dead

19th June 2011, 03:43 AM	#2
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	Unless this amp has an unusual drive circuit, there's virtually nothing other than defective FETs that will cause the gate resistors to burn. __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

19th June 2011, 04:02 AM	#4
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	'Dead' and 'one side and the other side' isn't very specific. Precisely what do you mean? Be descriptive. It would be best if you posted a photo of the board as it is now and marked to show what you mean. __________________ 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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19th June 2011, 03:55 AM	#3
timwebb diyAudio Member Join Date: Jan 2010 Location: memphis tn	i pulled the fet's out and replace the drive transistors but one side is still dead.the other side is perfect.

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