BARACUDA-Legend-1

[kt315]

40106 burnt. reconnect resitors on GND (+E for 40106) - look this pic. change values of them - look the pic.
then change 40106.

[chuubaba]

I fully agree with you. I am 40 now. Too many tasks to look after. I have already been into too much study. My stage of reading to learn has just elapsed and whatever is left is occupied with more pressing priorities. After attempting to find and read about my problem I post in hope for receiving tips from people of knowledge. I wish members stop getting annoyed by my questions. About Kt i am sure he has a big tribe and glorious ancestors so he does not get annoy.

I already have ... several times.

Forget about building any MD projects until you understand some very basic electronics. When you've managed to do that, your life will become less frustrating.
I know that everyone has to start learning somewhere, but you need to try and help yourself, and not rely on others (particularly KT315). I've now lost count of the number of failures, but surely this must a record.

[Qiaozhi]

I have tried everything in my knowledge and its time for experts. Why don't you look into these symptoms and suggest a cure.

I already have ... several times.

Forget about building any MD projects until you understand some very basic electronics. When you've managed to do that, your life will become less frustrating.
I know that everyone has to start learning somewhere, but you need to try and help yourself, and not rely on others (particularly KT315). I've now lost count of the number of failures, but surely this must a record.

This is the last I'm going to say on this subject. Now it's up to you...

[chuubaba]

Kt brother i am also fail in test # 5 of build document. NE5534 pin6 is constantly giving 4.48V and not changing with trimmer.

[chuubaba]

I have tried everything in my knowledge and its time for experts. Why don't you look into these symptoms and suggest a cure.

... and so the saga continues.

[Qiaozhi]

... and so the saga continues.

[chuubaba]

There is nothing for o-scope and multimeter in collector of 2N2222. 0.01V

put pic from collector of 2222 (2n2222) under driver mosfet on your pic of board

[kt315]

put pic from collector of 2222 (2n2222) under driver mosfet on your pic of board

[chuubaba]

Kt you want me to turn the MPSA13 / MPS102 ?

[kt315]

also we know modulated mosfet Q7 setted unright still in original board. its in inverted position. i did not correct that in my board and left as-is because i did the copy
hoping correct after testing and in second batch.
but... this works. you must know this fact. all mosfets are working in inverted position or not just the time will show that.

[chuubaba]

scope setting is 0.5mS/Division and 5.0V/Division. There was no signal on o-scope. There is no voltage on multi meter. I switch it ON/OFF again and it gives 0.18V on multimeter.

you do not have modulation signal. give o-scope signal pic on base of 2SA13.

[kt315]

you do not have modulation signal. give o-scope signal pic on base of 2SA13.

[chuubaba]

there is one very very small click sound when i switch the power ON. I used 10K 1/4W resistor.

yes. blue correct. do.

[kt315]

yes. blue correct. do.

[chuubaba]

This is my third time (failure).

You recently put together one ??