Hifonics XX Chaos

[mike49504]

With black probe on the ground terminal and red probe on the rca ground shield i get 0.987K ohms.

With amp powerd up i get 13.27 volts on the rca ground shields.

Any idea where to start checking?

[joesch1999]

yeah sounds like one of the output tansistors is shorted

[mike49504]

How can it be a shorted output when there is 0 volts on the outputs and the voltage is on the RCA shields?

[joesch1999]

sorry didn't notice rca shields, same voltage as the input, sounds like a bad zener did you check them?

[Perry Babin]

What's the resistance from the B+ connector to the RCA shields?

Check this with no power applied.

[mike49504]

0.489 M ohms From B+ to RCA Shields

[Perry Babin]

If you ground the RCAs, does the current draw increase?

What's the resistance between the RCA shields and the non-bridging speaker terminals?

[mike49504]

0.4 ohms from rca shield to non-bridging speaker terminal.

If i try to ground out the rca shields Amp draws 60 + amps of current .

Now since i tryed that the amp idles high now around 10 amps.

[Perry Babin]

You should be working through a limiter.

Do you still have 0 ohms between the RCA shield and the non-bridging speaker terminals?

You may have an intermittently shorted transformer. Measure the resistance from the B+ terminal to the RCA shield while twisting the transformer. Does the resistance ever drop?

[mike49504]

from non briding speaker terminal to rca shield nw i havw 4 ohms.

When twisting the transformer i can get it to drop down to 0.8 ohms