q6 keeps burning up

[Damster]

Hello. Q6 keeps burning and is actually affecting r46. approx 4.67 on r46 then 1.38 after q6 burns up. nearby led flashes on power up then stays unlit. 14.4 and -14.4 at pins 4 and 8 ( u1 and U3 ) before opamps installed.

PLEASE HELP!

[tpryan]

You've probably got some transistors in backwards, or you're creating shorts with your soldering.

[Damster]

thanks for the reply. I have checked and double checked all solder connections and transistors and my friend Ron has done the same. I will check one more time.

[Damster]

Perhaps I should ask. I could'nt find any instructions as to where pin 8 and pin 4 are on the opamp or the pcb so I went to the BB website and found a diagram. It pointed to top right as being pin 8 and bottom left being pin 4 ( notch is on top ). Is this correct?

[tpryan]

I have checked and double checked all solder connections and transistors and my friend Ron has done the same. I will check one more time.

Check again. Make absolutely sure you did not install an MJE182 at Q9.

It pointed to top right as being pin 8 and bottom left being pin 4 ( notch is on top ). Is this correct?

Yes.

[Damster]

Bingo! MJE 182 at Q9! Thanks Tim! I have another problem though which I will start a new thread for. Thanks again!