Hi
AV400 :
http://www.aussieamplifiers.com/download.htm
This is the second AV400 that I have built. 1st one is for a subwoofer which is still working quite alright and nothing nasty come out during construction but this one....
I have use 220u instead of 100u for the power rail decoupling caps. (I had the name right?). I found that my pot is just 3k8 instead of 5k as specified. The pre-freight test comes out fine except the voltage across R3 was a bit off.
When I tried to adjust the pot, the voltage across the source resistors give me null reading. No matter how I adjust the pot, there is no reading whatsoever. No q. current?
Can anyone give me some idea what might went wrong. I've checked all transistors before soldering in.
Thanks in advance for your information.
AV400 :
http://www.aussieamplifiers.com/download.htm
This is the second AV400 that I have built. 1st one is for a subwoofer which is still working quite alright and nothing nasty come out during construction but this one....
I have use 220u instead of 100u for the power rail decoupling caps. (I had the name right?). I found that my pot is just 3k8 instead of 5k as specified. The pre-freight test comes out fine except the voltage across R3 was a bit off.
When I tried to adjust the pot, the voltage across the source resistors give me null reading. No matter how I adjust the pot, there is no reading whatsoever. No q. current?
Can anyone give me some idea what might went wrong. I've checked all transistors before soldering in.
Thanks in advance for your information.