Question about Car Audio & Video
Something went wrong when connecting the amplifier and the protective circuit was engaged. Now the little green light "Protective" just goes on blinking. Normally it would keep blinking for a couple of seconds and then turn to steady green. This little green light is situated right between the hudge Vu:s.
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Posted on Jan 02, 2017
SOURCE: No Audio From Amplifier
I would first check for "rail votage" at the rectifiers... If all of your audio transistors are not getting around 40 volts then check the transistors you replaced. They should be getting a 5 volt (10 volt square wave is checked with a scope) "drive" signal. If half of your power supply transistors are not getting a drive signal then replace the kia494/tl494/kia594/tl594---whatever it is. thats the ic chip that supplies the "drive" signal to the power supply transistors. Also follow the board closely out of the power supply transistor to the 494 chip.. there should be some small driver transistors in between.. make sure they are not shorted or fried as well... let me knoe if you need more help
Posted on Aug 18, 2007
It probably has shorted output transistors. To eliminate other possible causes, read through the following page.
Amplifier in Protect Mode - Troubleshooting
Let me know if you have any other questions.
Posted on Nov 02, 2008
SOURCE: Amp Turns on Fine, but no Sound
have you checked the levels on the ohms? adjust them higher if need be contact me on yahoo msgr if you need more assistance
Posted on Dec 03, 2008
SOURCE: Amp on "protect" mode
Hi, what you need to do is unplug all the connections to the amp. The amp goes into protection when the circuitry over heats.\
First decrease all your gains to minimal volume.
Connect your 12+V, remote, and ground.
See if the protection light comes on then.
Next plug in your RCA cables.
Check protection light.
Then plug in your subwoofer cables.
See if you are still in protect mode.
Hopefully everything works alright again.
Just slowly increase the gain to see what the cut-off is. Make sure you aren't dropping the ohmage too low on the amplifier. Check manual for correct wiring and such.
Posted on Feb 09, 2009
you Amp is overloading and going into protection mode. if it cuts out with the wire u were using first then their would be no need to upgrade the size of ur wire cause that would only be, doubling or trippling the power u are getting threw those wire now. bottom line the 2 subs u are using are obviously to much for the amp. try dropping the OHM's by connection the subs together and runnig just a single positive and negative to the amp! or just get a better amp
Posted on Jun 10, 2009
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