Orion colbolt cb1200.1 puzzle.

[rhempz01]

Anyone know what value resistors belong in the amp.. He is a picture of the board in all its awesomeness. The quality is astounding smh... Does anyone know what the resistors are for the power supply? The amp originally had p55nf06.... And 4 irf640n for the outputs. I think they are 10r, can use 3205's and what resistors should I use here....

 

[rhempz01]

Resistors?

 

[rhempz01]

I changed these already.

 

[rhempz01]

Resistors?

 

[rhempz01]

Resistors?

 

[Perry Babin]

If this supply is a standard configuration (it appears to be), the 3205s with 47 ohm gate resistors should be OK. Don't inadvertently install 47 ohm resistors in locations that are not gate resistors.

 

[rhempz01]

OK perry, that's what I was thinking. But everything over there is burnt. So I can't really tell other than the trace to the gate leg of the PS fet. I think there are some 1k mixed in there also. Only two for something.

 

[rhempz01]

Perry which driver transistors should I change in this amp to drive the new 3205's?

 

[rhempz01]

Drivers for the 3205's the transistors that are in the board now are 2n4403, 2n4401? I changed what I thought them to be on a power daughter board

 

[Perry Babin]

The emitters of the driver transistors will be connected to the gate resistors for the 3205s.

 

[rhempz01]

The board isn't the easiest thing to trace, its very cheap and badly soldered I had to repair alot of trace that was damaged due to heat.

 

[Perry Babin]

Use your meter to find the 0 ohm connections. Gate resistor to any possible driver emitters.

 

[rhempz01]

Yes, all I found were the 1am and 2a, on the power board with the 494, but it isn't powering up. Should I remove the outputs and deal with the power issurb? On the source there is 6.23v with no b+ remote and ground only

 

[Perry Babin]

Only Rockford amps can be used with only ground and remote for troubleshooting.

 

[rhempz01]

Oh OK perry. How should I check it?

 

[Perry Babin]

If it won't power up normally, post the voltage on all pins of the power supply driver IC.

 

[rhempz01]

I need to know what these the values of these resistors on an Orion 1200.1 rev.A they were to burnt to read the color codes. Can someone upload a picture of a healthy ps side of the board?

 

[rhempz01]

This mess..

 

[Hexhclass]

The original PS gate resistor is 10 ohms

 

[rhempz01]

I don't know there designated placement on this board. I need to know what values go where on that side buy the ps fets. Along with the few other resistors as they were all burnt