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1G Orion HCCA 225
1G Orion HCCA 225
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Old 12th July 2018, 11:39 PM   #11
jkrokenberger is offline jkrokenberger  United States
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I have the board out of the sink and fear the one transistor will burn up. Should I just replace the diode as it looks to have gone bad visually?


Jason
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Old 12th July 2018, 11:42 PM   #12
Perry Babin is offline Perry Babin  United States
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Just power it up for a second to measure the voltage. If you have to, set it back in the sink and install the two screws holding that transistor down.
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Old 14th July 2018, 06:42 AM   #13
jkrokenberger is offline jkrokenberger  United States
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Will do sir. I have ordered diodes and PS transistors for it so they all match. I will replace the diode and transistors, measure and report back.

Jason
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Old 1st October 2018, 01:10 AM   #14
jkrokenberger is offline jkrokenberger  United States
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I've replaced the 18v zener with a new one. I get 18.3v across it. The amplifier is also staying powered when you remove power from the remote lead.



I have a better camera now too.

Jason
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Old 1st October 2018, 01:14 AM   #15
Perry Babin is offline Perry Babin  United States
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Confirm that there is 0v on the remote wire when it's disconnected.

IS the LED just lit due to charged caps or is the power supply still in full operation?
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Old 1st October 2018, 01:48 AM   #16
jkrokenberger is offline jkrokenberger  United States
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Still in operation.
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Old 1st October 2018, 04:05 AM   #17
Perry Babin is offline Perry Babin  United States
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Confirm that there is 0v on the remote wire when it's disconnected.
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Old 2nd October 2018, 01:26 AM   #18
jkrokenberger is offline jkrokenberger  United States
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The longer the amp is powered up the more it goes negative of ground.


Jason
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Old 2nd October 2018, 05:59 AM   #19
Perry Babin is offline Perry Babin  United States
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What's going more negative? You need to be precise/specific.
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Old 2nd October 2018, 08:16 PM   #20
jkrokenberger is offline jkrokenberger  United States
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I am sorry. The the longer the amp is powered after the initial 12v to the remote wire and removed the further below negative the voltage on the remote lead goes. It will start at 0v once the +12v is removed and drop to -1v after about 5 mins and goes further negative the longer it's powered up. The power supply remains in operation at ~+-28v rails and I have 18.3v across the zener you had me check and I replaced.


Jason
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