Orion D5000 HCCA
Hello everyone
The story is the protect light was activated the amp was repaired once. Then It was supposedly triggered again by being installed in a trunk that was not water tight. Now it ends up here with me
. Nothing particularly stands out so far upon visual inspection. There was a jumper that appears to have fused to another. These stand up cards could have placed the IC's (drivers maybe?) in direct contact with water if it was laying in it and shorted them. There is no schematic available I'm sure but I want to think it may be minor. I'd hate to remove a lot of components for nothing.
Who knows..... 😱 With power protect light comes on and amp flashes steady in what appears 1 second intervals. Anyone here have experience with this lady
Hello everyone
The story is the protect light was activated the amp was repaired once. Then It was supposedly triggered again by being installed in a trunk that was not water tight. Now it ends up here with me
. Nothing particularly stands out so far upon visual inspection. There was a jumper that appears to have fused to another. These stand up cards could have placed the IC's (drivers maybe?) in direct contact with water if it was laying in it and shorted them. There is no schematic available I'm sure but I want to think it may be minor. I'd hate to remove a lot of components for nothing.Who knows..... 😱 With power protect light comes on and amp flashes steady in what appears 1 second intervals. Anyone here have experience with this lady
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Based on the fault codes it looks like the slow flash 50% duty cycle which is an over voltage code. The only other steady slow flash code would be thermal shutdown.
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When you power up the power led comes on momentarily then goes out the protect led comes on and the esp led begins to blink steady. When you release power the power led comes on momentarily goes out and the protect led and esp led both come on steady with no blinking for a maybe 3 or 4 seconds. Then the esp led starts to blink again a few times while the protect led goes out and then it stops blinking and goes out the power led comes on again and then slowly fades to off. 
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Have you looked at the power supply to see if it was powering up (does it produce any rail voltage, if you don't have a scope)?
I do not see any voltages other than the bench supplies at the rails or any legs of the irfp1405's . Is the driver located on the vertical board?
The best way to determine if the supply is trying to power up is to monitor the DC voltage on the rectifiers or the rail caps. Even a very brief chain of drive pulses will cause the DC to surge in the rail caps. If the voltage in the rail caps never changes, it likely means that the supply is not even trying to power up.
The driver IC for the power supply is on the vertical board in the power supply section of the amp.
The driver IC for the power supply is on the vertical board in the power supply section of the amp.
The rectifiers d203,d204 and d205,d205 I think. If I cant look there will have to pull the board from the chassis to read rail caps. Unless there is another option?
I measure apprx. 2.2 volts across the outside legs of the U60D60D'S when I apply power then they start to fall .
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The highest I measure is 2.4 and it only reaches that voltage if it is left un powered for a length of time.
If it's not developing more than about 1v/rail, it's probably going to be difficult to see a spike of DC on the output. You may be able to force the amp to power up to see what is happening to put it in protect but it could be risky.
You have a lot of options, including handing it back to the owner and letting someone else have the headache.
There are always risks when bypassing protection.
You should also know that if you do anything to destroy the ESP IC, you may not be able to get the parts to repair it.
There are always risks when bypassing protection.
You should also know that if you do anything to destroy the ESP IC, you may not be able to get the parts to repair it.
Is that the pic chip? If the firmware is not read or write protected I'm not so afraid . How do we bypass protect.
It's protected from what I've read. There have been threads on it in this forum.
I'm going to need the DC voltage on all pins of the SG3525 on the driver board. Do not short between the terminals. If you cannot get to all of the pins with straight probes, make one of these:
I'm going to need the DC voltage on all pins of the SG3525 on the driver board. Do not short between the terminals. If you cannot get to all of the pins with straight probes, make one of these:
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