directed 500/2 - Page 2

mike49504 · 6th November 2009, 03:43 PM

yes i checked all the drive transistors in each channel all check good

Perry Babin · 6th November 2009, 08:03 PM

Pull all of the output transistors from that channel and check them on ohms and on diode check to see if any are leaking.

mike49504 · 6th November 2009, 09:47 PM

Thanks Perry i pulled the otputs and checked them i was leaking amp powers up fine now so when i get the new parts and install them ill let u know how the amp works

mike49504 · 7th November 2009, 02:38 AM

i replaced all the outputs and powerd up the amp it played fine for 10 mins the smoked the output transistors again . Wondering what might cause this

Perry Babin · 7th November 2009, 02:44 AM

Did you replace them with the same exact part number?

Are you sure the outputs were flat and tight against the sink?

Are you sure the insulators were in good condition?

6th November 2009, 08:03 PM	#12
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	Pull all of the output transistors from that channel and check them on ohms and on diode check to see if any are leaking. __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

7th November 2009, 02:44 AM	#15
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	Did you replace them with the same exact part number? Are you sure the outputs were flat and tight against the sink? Are you sure the insulators were in good condition? __________________ 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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6th November 2009, 03:43 PM	#11
mike49504 diyAudio Member Join Date: Sep 2006	yes i checked all the drive transistors in each channel all check good

6th November 2009, 09:47 PM	#13
mike49504 diyAudio Member Join Date: Sep 2006	Thanks Perry i pulled the otputs and checked them i was leaking amp powers up fine now so when i get the new parts and install them ill let u know how the amp works

7th November 2009, 02:38 AM	#14
mike49504 diyAudio Member Join Date: Sep 2006	i replaced all the outputs and powerd up the amp it played fine for 10 mins the smoked the output transistors again . Wondering what might cause this

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