Orion HCCA Amp

[Jason Smith 616]

Amp powers up and produces rail and regulated voltages ..

Relay enguages but i get no output at all ..

Not sure of the model number since the pop top is mising and no other markings anywhere on the amp I called orion with the serial number but that was no help..

Anyway anyone have any ideas on where to start since i get no output ?

 

[Perry Babin]

R-R oscillation?

For any heatsink mounted transistors with a 10 ohm resistor in series with leg 3. confirm that the 10 ohm resistor is within tolerance.

This amp may have a strange problem with clipping behavior. It may not be something that can be resolved.

 

[Jason Smith 616]

I'm gonna have to pick up a new probe and see if that is the issue with my scope ..
I can't get it to lock into anything I even tried just probing the battery + wire and can't even get the trace to deflect

 

[Perry Babin]

Run a short piece of wire from the test point on the scope to the center conductor of the channel you're using. Will it trigger on the test signal?

 

[Jason Smith 616]

Yes I can get it to trigger with a wire ..

The probe is bad going guess I'm going to buy a new probe

 

[Jason Smith 616]

Ok back to this amp ..

I do not get rail to rail oscillation on the outputs

 

[Jason Smith 616]

Anyone know if there are common problems with this amp ?

I do not get rail to rail oscillation on the outputs wondering if anyone can point me in the right direction in where to start checking

 

[Jason Smith 616]

Back to this amp ..

Anyone have any ideas I spent a couple hours already and can't figure out why I'm not getting rail to rail oscillation on the outputs

 

[Perry Babin]

Did you check all of the 10 ohm resistors as suggested in post #2?

 

[Jason Smith 616]

Yes they all test within tolorance

 

[Jason Smith 616]

Anyone have any ideas on this amp before I give up on it ..

All 10 ohm resistors that connect to the outputs are within tolorance ..

I also have been checking resistors diodes and transistors and everything is testing fine ..

Still do not get rail to rail oscillation ..