Hello!
This amp looks weird...it alternately flashing the red and green light or steady red light. I don't have a defective output and power transistors. I've checked every supply but no problem.
But if I unbias the transistor that driving the Kicker logo lights (4 leds in parallel) this amp is powered up. Removing the gate diode or shorting the zener diode across LED connector this amp will works fine.
Any advice?
Please see attached picture.
Thank you!
This amp looks weird...it alternately flashing the red and green light or steady red light. I don't have a defective output and power transistors. I've checked every supply but no problem.
But if I unbias the transistor that driving the Kicker logo lights (4 leds in parallel) this amp is powered up. Removing the gate diode or shorting the zener diode across LED connector this amp will works fine.
Any advice?
Please see attached picture.
Thank you!
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The LEDs appear to be grounded to the audio ground (RCA shields). Is that correct?
Does the amp go into protect mode when a source unit with a proper grounded RCA shield is connected?
Does the amp go into protect mode when a source unit with a proper grounded RCA shield is connected?
The LED leads are most likely shorting to the amp cover. Use diode checker or ohm meter to check continuity to bare metal on cover to LED leads and resistor. This of course should test open. If shorted, remove name badge and trim leads.
RCA shield is that the ground of an RCA input? or the circular metal frame from RCA female connector?
I checked the continuity of the RCA shield and the AGND. no connection.
I powered the amp with my mobile phone use as a source unit but goes into protect ON and OFF (flashing lights alternately), rail voltages ups and down...
I removed LED strips from the metal cover but still ON and OFF.
But if you remove the supply or disconnect the base of the LED driver transistor. The ON and OFF gone and amp works perfect.
I checked the continuity of the RCA shield and the AGND. no connection.
I powered the amp with my mobile phone use as a source unit but goes into protect ON and OFF (flashing lights alternately), rail voltages ups and down...
I removed LED strips from the metal cover but still ON and OFF.
But if you remove the supply or disconnect the base of the LED driver transistor. The ON and OFF gone and amp works perfect.
I don't have the complete diagram so I'll leave the rest of the troubleshooting to PapaZBill since he's helping you.
Thank you Perry and Papa!
I've found the problem...it was the adhesive from the Leds terminal that caused leakage to adjacent component. thanks!
I've found the problem...it was the adhesive from the Leds terminal that caused leakage to adjacent component. thanks!
Are you referring to the brown fixative that's around the connector below? If so, any time you see that fixative and it's started to turn dark, you need to remove it. It becomes both conductive and corrosive. It will eat through the legs of components and through the conductive elements of resistors (causing them to open or change value).
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Good catch! I have seen this a couple of times.Sometimes the problem is staring you right in the face, and finding it lacks looking in the right direction!
PapaZBill, do you know what that fixative is? If you don't, could you research it and post the exact name? I know it's asking a bit much but I've never been able to find exactly what it is.
Hey fellas,
My KX600.4 is doing the exact same thing. Flashing from Protection to Green, but the green flash is a much shorter duration. So, it's mainly red, but you'll see a flash of green consistently. I have no idea what i'm doing, but I opened the amp up and it is filled with that brown crap. Is there a procedure I should follow for removing this stuff, and if so, do I need to reapply it after I've wiped it?
I apologize if this seems stupid... I just know that PC power supply's can hold enough current to kill you even years after being unplugged, and I'm just not sure what to expect from an amplifier.
Any advice is much appreciated.
Thanks!
My KX600.4 is doing the exact same thing. Flashing from Protection to Green, but the green flash is a much shorter duration. So, it's mainly red, but you'll see a flash of green consistently. I have no idea what i'm doing, but I opened the amp up and it is filled with that brown crap. Is there a procedure I should follow for removing this stuff, and if so, do I need to reapply it after I've wiped it?
I apologize if this seems stupid... I just know that PC power supply's can hold enough current to kill you even years after being unplugged, and I'm just not sure what to expect from an amplifier.
Any advice is much appreciated.
Thanks!
No such thing as a stupid question. However, it's difficult to advice you since in your words "I have know idea what I'm doing"
And without at the very least a volt/ohm meter, an adequate power supply, knowing how to use them and a basic understanding of car audio electronics it will be difficult to advice you.
You may want to begin by starting a new thread.It will make it easier to follow and advice you.
Also,consider reading through Perry Babins website BCAE.Com
FYI, caution around any electronics is adviced,this amp will not necessarily carry any lethal voltages when powered off and giving a few minutes to discharge.
Sent from my HTC Desire 626 using Tapatalk
And without at the very least a volt/ohm meter, an adequate power supply, knowing how to use them and a basic understanding of car audio electronics it will be difficult to advice you.
You may want to begin by starting a new thread.It will make it easier to follow and advice you.
Also,consider reading through Perry Babins website BCAE.Com
FYI, caution around any electronics is adviced,this amp will not necessarily carry any lethal voltages when powered off and giving a few minutes to discharge.
Sent from my HTC Desire 626 using Tapatalk
When you get a new thread started I will reply,as I'm sure others will also.
Sent from my HTC Desire 626 using Tapatalk
Sent from my HTC Desire 626 using Tapatalk
Awesome! I'll start a new one tomorrow with a much better description. I feel a little stupid having worded things the way I did. I do, however, appreciate the response!
I'll take some good quality pics and have a much more adequate description of what i'm dealing with, as well as my technical knowledge (so you'll at least know where to start helping me); I'm in the cyber security industry, so why I would leave you with such little detail is beyond my understanding when I put myself in your position. Sorry about that... Anyway, you rock. I'll be back!
I'll take some good quality pics and have a much more adequate description of what i'm dealing with, as well as my technical knowledge (so you'll at least know where to start helping me); I'm in the cyber security industry, so why I would leave you with such little detail is beyond my understanding when I put myself in your position. Sorry about that... Anyway, you rock. I'll be back!
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