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TARAMPS HD8000
TARAMPS HD8000
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Old 2nd September 2019, 09:57 PM   #1
Albis2985 is offline Albis2985  Panama
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Default TARAMPS HD8000

I am working with an HD 8000 taramp that works well, but when the volume goes up it is protected.

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Old 4th September 2019, 03:48 PM   #2
barber02 is online now barber02  United States
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Check the voltage across the speaker terminals. It should be zero or very close to zero.
Check the voltage between the ground terminal and each speaker terminal. Each one should be half the rail voltage.

If you get anything other than that, shut the amp down and check the output transistors for shorts or leakage with your multimeter on diode check. Also check the SMD diodes mounted close to the output transistors for shorts or open.

David
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Old 4th September 2019, 04:50 PM   #3
barber02 is online now barber02  United States
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Just so you know...

There is a guy on YouTube Ivega Electronica that works on a lot of these amps and he seems pretty good at it. The problem for me is, I don’t understand his language. Interesting stuff none the less. Maybe you can understand some of it. I think he’s speaking Portuguese.

Taramps HD8000

I wish someone would do these videos in English for people like me who see a lot of these amps.

David

Last edited by barber02; 4th September 2019 at 04:51 PM. Reason: Grammar
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Old 5th September 2019, 08:31 PM   #4
Albis2985 is offline Albis2985  Panama
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Good afternoon David, thank you for answering, check what you told me and everything measures as you indicated, I am about to check the exits since I have noticed that when I leave the amplifier on a while start to warm up
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Old 5th September 2019, 08:34 PM   #5
Albis2985 is offline Albis2985  Panama
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I tell you that maybe I have seen those videos on youtube both from Ivega and Barevids but since they are languages that I do not know I use the translator of youtube to get to understand what is explained, I only speak Spanish and a little English so that I understand you
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Old 6th September 2019, 02:30 AM   #6
barber02 is online now barber02  United States
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What is the blinking code you get from the LED when the amp protects?

David
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Old 6th September 2019, 03:04 AM   #7
barber02 is online now barber02  United States
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In the output section on each side, working from left to right, the first pair of mosfets should have close to the following voltages on each leg

100v, 193v, 96v

The second pair of mosfets should have about

5.33v, 96v, 0.00v

On each leg.

David
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Old 6th September 2019, 05:15 PM   #8
Albis2985 is offline Albis2985  Panama
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Thanks David I check now that I get home and I tell you
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Old 9th September 2019, 04:14 PM   #9
Albis2985 is offline Albis2985  Panama
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Good morning David, answering your question about protection shows no intermittent code only turns on red, the voltages you indicated in the output section are quite close to the ones you mentioned, I remind you he only protects himself when I give volume to the team. Some kind of suggestion?
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Old 9th September 2019, 10:53 PM   #10
barber02 is online now barber02  United States
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Solid red LED indicates that the output section is seeing a short circuit or the ohm load it is driving is too low for the rating of the amp.

I would monitor the voltages at the speaker terminals, the output inductors with a scope to see if you can catch what might be happening as the volume goes up. Twist and pull on the inductors as the amp is playing to see if that causes the fault. Check the caps in the output section to see if any of them are turning into resistors. Monitor the voltage across the diodes at the mosfets in the output section for changes as the volume goes up. Make sure the backs of the mosfets have insulators between them and the heat sink. Check for components heating up more than others.

Check the drive signals to the mosfets with a scope in the output section.

David
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