I don't see a problem with that. If you measure the DC voltage from center leg to center leg of the two rectifiers on each side, what is the DC voltage?
-50 vdc on both sides.
If the signal looks good, and its producing rail, why wont it power why does the power light just flash red?
If the signal looks good, and its producing rail, why wont it power why does the power light just flash red?
It tries to sometimes, there is pulsing DC everywhere.
Its on the output terminals, the drains, gates, and sources of the outputs have bouncing DC that all over the place, maybe when the amp is trying to turn on and off?
I cant get any consistant readings I can see audio for seconds on 1 channel then it goes away and I am getting DC spikes on the other channel.
I dont know??
Its on the output terminals, the drains, gates, and sources of the outputs have bouncing DC that all over the place, maybe when the amp is trying to turn on and off?
I cant get any consistant readings I can see audio for seconds on 1 channel then it goes away and I am getting DC spikes on the other channel.
I dont know??
It could be that the channel with DC is causing it to go into protect. Double0check the outputs.
OK I will check the outputs in the channel with DC spikes. That makes sense because the channel has audio until the other one spikes the it loses it.
I removed all the outputs to test them and thought I would power the amp.
Same result the amp powers green, just starts drawing current then flashes red and the one channel is geeting DC spikes of up to 12 vdc.
Any ideas?
Same result the amp powers green, just starts drawing current then flashes red and the one channel is geeting DC spikes of up to 12 vdc.
Any ideas?
Are you measuring across the speaker terminals?
Post a photo of the components in the channel with DC.
Post a photo of the components in the channel with DC.
![HPIM3327[1].jpg](/community/data/attachments/284/284193-0f6dea62c6349a15d24ec97351b92b06.jpg?hash=D23qYsY0mh)
Connect a dummy load across the speaker terminals. Does that stop the DC and allow the amp to power up or does the amp draw excessive current?
Connecting a 4 ohm dummy load allows the amp to power up and be stable with solid green light but the red protection light is flashing.
The pulsing DC is gone as well.
The pulsing DC is gone as well.
I have not tested them yet, why does the dummy load remove the DC and allow the amp to power?
Is the red protection light flashing because the outputs are removed?
Is the red protection light flashing because the outputs are removed?
The DC source causing the DC on the speaker terminals without the outputs likely has significant resistance. If not, it would cause the amp to draw excessive current.
The red LED blinking may be a separate problem.
The red LED blinking may be a separate problem.
2 outputs were shorted and 2 were leaking from that channel.
Could a defective driver be causing the DC source?
Why does the dummy load get rid of the DC and allow the amp to power?
Could a defective driver be causing the DC source?
Why does the dummy load get rid of the DC and allow the amp to power?
Q419 a C2682 has full rail on every leg.
Q420 a C2682 does not from the other channel.
In the picture they are the 2 components that are screwed down to the heat sink still where the fets clamp down.
Just poking around and thought I would mention it??
Q420 a C2682 does not from the other channel.
In the picture they are the 2 components that are screwed down to the heat sink still where the fets clamp down.
Just poking around and thought I would mention it??
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