planet audio bb2400.1

[Perry Babin]

Confirm that leg 1 of that transistor has voltage greater than the positive rail.

 

[bdgf2004]

yes
rail is at +78vdc
leg 1= +95vdc

 

[Perry Babin]

Does R50 connect to the center leg of Q47?

 

[bdgf2004]

yes

 

[Perry Babin]

What is the DC voltage across R82 and R84 after the delay?

 

[bdgf2004]

R82=0.032vdc

R84=0.042vdc

 

[Perry Babin]

Are there any parts out of the circuit right now?

 

[bdgf2004]

no sir, everything is in place

 

[Perry Babin]

Voltage across R95 (910 ohms)?

 

[bdgf2004]

yes its a 910 ohm.

its completely open.

is it safe to replace it?

 

[Perry Babin]

Yes. It probably failed when the Zener failed.

 

[bdgf2004]

dang! another problem

it appears as though i don't have any 910 ohm resistors on hand

i have a 1k ohm or i can do 3-300 ohm for 900 ohms

would 900 or 1k be ok?

 

[Perry Babin]

900 ohms.

 

[bdgf2004]

so far it's been playing for about an hour perfectly.

and the fan you recommended is definitely moving a lot more air than the ones i had laying around.

thanks perry

 

[mastajax]

has anyone found a schematic for this, out of curosity... is it released?

 

[bigpun4fubu]

id like one too if anyone has one

 

[riveracc1]

I have never posted on this forum but I do have to say that this is the most user friendly forum that I have ever seen. I would like to congratulate Perry because he definitely know his stuff (not to underestimate the others here) and his willingness to help others.

I personally own a "spanish" speaking car audio forum and occasionally wonder in here to increase my technical/repair knowledge. This specific thread has helped me immensely with several Planet Audio repairs.

Thanks to you all!