Rockford Fosgate T500-1bd

[cajones65]

Yes sir, it was on pin 5 of u205. I have been getting high amplitudes on everything that I have been testing for some odd reason.

 

[Perry Babin]

Is you scope probe switchable 1x/10x?

 

[cajones65]

Yes sir, I have it on 10x on probe and scope

 

[Perry Babin]

Does switching to 1x make a difference?

 

[cajones65]

Perry, I just remembered that I changed probes and never checked the setting. Your are right, I will send another picture. WOW!!!

 

[cajones65]

Here is the correct waveform. Sorry about that. Going to check the outputs again now.

 

[cajones65]

Perry still getting strange looking waveforms. Square wave with a spike in the top of it. This is the gate of 2015

 

[Perry Babin]

Do you have the jumper in the resistor and capacitor?

 

[cajones65]

No sir, I do not. I removed them last night.

 

[Perry Babin]

The jumper is used to move the drive closer to a 50% duty cycle.

 

[cajones65]

Do I need to reinstall it?

 

[Perry Babin]

yes

 

[cajones65]

Ok Perry, the jumper is back on. What measurement do we need now?

 

[cajones65]

Perry do I need to remove the rectifiers from the circuit, along with the jumper?

 

[Perry Babin]

Yes. remove the rectifiers (lift center terminal)

 

[cajones65]

alright got that done

 

[Perry Babin]

Waveform?

 

[cajones65]

No sir I don't have a wave on any gates

 

[Perry Babin]

Do you have supply voltage on pins 4 and 8 of U205?

 

[cajones65]

I do however have a good wave on D2003 and D2004 anode