Question about Jensen A400HLX Car Audio Amplifier
I have a Jensen 400W amp that I have been running for a couple years with o probem. I disconnected it for a while and ran another amp for a while until that one quit. When I hooked the Jensen back up, it worked for a couple months and the did the same thing tha the pioneer i had before it.
What it does is when i turn the amp on it turns on and then shuts off with the power protect light on. If I leave it on for a little bit, it will pop back on and then off instantly again with the power protect light on. Both the Jensen and the Pioneer amp that I have are doing the same thing.
Originally I thought it was a problem with the amps, but now I am wondering if there is something wrong with the car tht is messing the amps up. Any suggestions or help would be great.
Thank you for your time,
Yes, you should be able to find the defective transistors. It may be as simple as replacing the defective output transistors but there could be additional damage.
Read through the following page if you want to try to find the defective components. Let me know if you have any other questions.
Amp repair primer
Posted on Sep 25, 2008
If the amps are going into protect mode, it's likely that the output transistors have failed in both amps. This can be due to many things. Generally it's caused by running the amps at too low of an ohm load. If you drive the amps hard on a daily basis, that can also cause the amps to fail prematurely.
Let me know if you have any other questions.
Posted on Sep 24, 2008
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Posted on Jan 02, 2017
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