well !
How are u doing.

 

well !
How are u doing.

I have to order the parts I need. They should be in tomorrow or wednesday

 

I have to order the parts I need. They should be in tomorrow or wednesday

what output transistors should I use (so I can go ahead and order them too).

and I'm also gonna go ahead and do a recap on the power supply

 

Replacement is BD243B.

But this is old. Try to get a recent one tht matches the data.

By the way, u shud replace all the capacitors while u are at it. The power amp and the preamp.

Or u could find a transistor u like

 

Replacement is BD243B.

But this is old. Try to get a recent one tht matches the data.

By the way, u shud replace all the capacitors while u are at it. The power amp and the preamp.

Or u could find a transistor u like

I found the NTE331 and the D44H11 so far

I will eventually do a recap on everything, but I dont wanna spend that much money at one time (btw, im only 14 so i aint got much anyway

 

As for Q756, i cannot use BD140 because the pinout is different

 

U have to compromise mate

Good god, ur 14 ?

If the outputs are good, then keep 'em.

 

btw, im only 14 so i aint got much anyway

Good god, ur 14 ?

Getting an early start, I like that Best of luck to you!

 

U have to compromise mate

Good god, ur 14 ?

If the outputs are good, then keep 'em.

Ummmm, okay then.

Ill get the D44H11s then.

 

one more thing, be careful on the NPN & PNP types and there location.

Switch them & KAPOW!

 

I just ordered the output transistors (D44H11's), so they should be in this saturday

 

If Q706 was shorted and the resistors in its emitter and collector circuit damaged, then the emitter of Q901 likely had a very high negative voltage applied to it, which would have stressed it.

 

If Q706 was shorted and the resistors in its emitter and collector circuit damaged, then the emitter of Q901 likely had a very high negative voltage applied to it, which would have stressed it.

Maybe, because I did notice that the speaker cone got pulled in when this happened.

 

If Q706 was shorted and the resistors in its emitter and collector circuit damaged, then the emitter of Q901 likely had a very high negative voltage applied to it, which would have stressed it.

Very high voltage came from where ?

 

okay I have the parts I need now.

 

Put them where they belong in order.

What about the 22 ohm ones?

 

Put them where they belong in order.

What about the 22 ohm ones?

Yes I have those as well

 

Maybe, because I did notice that the speaker cone got pulled in when this happened.

Speaker will pull in or out when ever DC is applied, it does not need to be high voltage.

When ever there is a fault in an amp, DC will be available at the speaker terminals.

 

Speaker will pull in or out when ever DC is applied, it does not need to be high voltage.

When ever there is a fault in an amp, DC will be available at the speaker terminals.

Yeah i kno. I just assumed because he stated negative voltage, but it deffinetly wasnt high voltage

 

I couldnt find a schematic, and my iphone wont let me upload any pictures.

How pathetic is that? My jelly bean Samsung Convoy uploads pictures, and came with the USB cable for doing it.