Kicker zx1500.1

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Perry Babin

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Joined 2003
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I don't have a good sub but I know that something like the IRF3205 won't work... or didn't work in the only amp I had with this type of supply blown. The soft-start circuit was causing the problem.

For whatever you're using as a sub, remove remote voltage (leaving B+ and ground) and from that point, watch the amp meter on the 12v power supply for about 15-20 seconds. Make sure that there is no pulse of current after remote is removed.
 
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streetilegalbass

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Joined 2019
Excuse my English, I am using a translator, I speak Spanish, I do not understand which input voltage? , I have 10v on c11 and c12 should be 17v or is 10v ok?
 

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PapaZBill

PapaZBill

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Joined 2013
When I test an amp I normally have the power supply voltage set to 14.4 Volts. At 14.4 Volts C11 and C12 are at 18 Volts. If I lowered the voltage, C11 and C12 would also drop. When I set the Power supply to 11.8v, the voltage at C11 and C12 was ~14 volts.

I'm not sure why your only seeing 10 volts. It appears that the voltage between Pins 4 & 8 on the optocouplers is good, but low.

Did you say you have Drive and Audio?
 
PapaZBill

PapaZBill

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Joined 2013
If I have the drive on and check the points you have told me and I have the waveform taking horn output signal? and putting the positive probe on the points of the drive, what replacement can I use to replace the optocouplers? I can't find the one that has been thinking of 6n137 here?

I'm not sure what you are saying here. Do you have Drive(retangular wave)? Do you have audio on the speaker terminals?

I posted links for mouser in the previous post.
 
PapaZBill

PapaZBill

Member
Joined 2013
streetilegalbass said:
If I have the drive on and check the points you have told me and I have the waveform taking horn output signal and putting the positive probe on the points of the drive, what replacement can I use to replace the optocouplers? I can't find the one that has been thinking of 6n137 here?
Click to expand...

I don't know for sure if the 6N137 is compatable, I will look at it.

If you measure the DC voltage between Pins 5(black probe) and Pins 8(red probe on OPT100 and OPT101 what do you see? D101 and D107-1N4733 are 5volt zener diodes which set this voltage.

I'm not sure why you only see 10Vdc on C11 and C12. Varying the input voltage should vary this voltage.

Please use locators when refering to a part, such as Q100 and Q102. This will help me and others when asking for advice.
 
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streetilegalbass

Member
Joined 2019
ok opt100 and opt101 have 4v, with input power voltage 14.5v, and c12 has 12.4v and c11 has has 104v directly to the capacitor red and black tip with class d drive card installed without the card the voltage of c12 and c11 is 13.5 v with 14.5v at the input of the amplifier and one observation is that at 14.5v the mosfet transistors Q12 and Q13 of the small source get very hot
 
PapaZBill

PapaZBill

Member
Joined 2013
The attachment shows that the HCPL2601 and 6N37 are interchangeable, so the 6N37 should be a good replacements for OPT100 and OPT101

It's normal for the Q12 and Q13 to get warm, but I don't recall them getting hot to the touch. Changing Q100 and Q102-2SD669 or U100 and U101.

I posted links for Mouser to source the parts, Are you able to purchase them?
 

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