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Old 19th May 2010, 12:10 AM   #11
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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.
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Old 19th May 2010, 12:18 AM   #12
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Join Date: Nov 2003
Location: Louisiana
On the photo, it appears to be marked j5 which would make it a 20v Zener.
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Old 30th May 2010, 02:17 AM   #13
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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.
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Old 30th May 2010, 04:23 AM   #14
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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?
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