Carlsbro Cobra 90BG resistor help

[SM2GXN]

Hi!

Have replaced a pair of lovely 2N3055,s in my Carlsbro Cobra 90BG
but found two badly burnt resistors, does anyone know the value on these two R15 & R9?

Thanks in advance!

Bjorn

 

[Gold_xyz]

R15 = 100R , R9 = 33R

it could be wrong ...

I have found the answer on :
http://www.carlsbro.com/
(it seems an enough common problem... )

The value can also be understood by resistor position on PCB..

bye 😀

 

[SM2GXN]

Hi Gold_xyz!

Thanks a lot, if I had been clever enough I would have done same thing as you did, search at theirs forum 🙂
Yes it seems like a common fault with these amps.
I'll check the other transistors as well since those burnt resistors are in the bias circuit.

Thanks again!!
Bjorn

 

[Pitagi]

Hi Gold_xyz!

Thanks a lot, if I had been clever enough I would have done same thing as you did, search at theirs forum 🙂
Yes it seems like a common fault with these amps.
I'll check the other transistors as well since those burnt resistors are in the bias circuit.

Thanks again!!
Bjorn

Hi I was wondering if you could let me know the value of the resistor r33 as I cannot find a circuit, it is from the same amp. thanks Peter, (Pitagi)