MTX Thunder 81001 - Page 2

megael9 · 18th May 2010, 11:10 PM

thanks for all your replies, I still need one more thing to ask, Diode
Location # D404 which is Zener Diode is burnt out & don't know its value.
Can you please let me know its Voltage value, thanks in advance.

Perry Babin · 18th May 2010, 11:18 PM

On the photo, it appears to be marked j5 which would make it a 20v Zener.

megael9 · 30th May 2010, 01:17 AM

after replacing most of the component
oround this circuit, including all 4 ic`s, Im still
having problems, every time I apply power
to this unit, Q404. goes on fire, any sugestion?
and if any one have an schemattic of this section,
or at list let me know how to troubleshoot this section
will be very well apreciated. thanks in advance.

Perry Babin · 30th May 2010, 03:23 AM

With Q404 out of the circuit, what is the DC voltage on pins 4 and 8 of the op-amps near Q404?

18th May 2010, 11:18 PM	#12
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	On the photo, it appears to be marked j5 which would make it a 20v Zener. __________________ Links >> Basic Car Audio Amp Repair * Basic Car Audio Electronics * New Site * Basic Switching Power Supply Design * Basic Computer Skills << Links

30th May 2010, 03:23 AM	#14
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	With Q404 out of the circuit, what is the DC voltage on pins 4 and 8 of the op-amps near Q404? __________________ Links >> Basic Car Audio Amp Repair * Basic Car Audio Electronics * New Site * Basic Switching Power Supply Design * Basic Computer Skills << Links

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18th May 2010, 11:10 PM	#11
megael9 diyAudio Member Join Date: Oct 2009	thanks for all your replies, I still need one more thing to ask, Diode Location # D404 which is Zener Diode is burnt out & don't know its value. Can you please let me know its Voltage value, thanks in advance.

30th May 2010, 01:17 AM	#13
megael9 diyAudio Member Join Date: Oct 2009	after replacing most of the component oround this circuit, including all 4 ic`s, Im still having problems, every time I apply power to this unit, Q404. goes on fire, any sugestion? and if any one have an schemattic of this section, or at list let me know how to troubleshoot this section will be very well apreciated. thanks in advance.