Kicker KX800.1 no audio out.

[rdiaz]

Hello everyone, does some one has schematics for this amplifier?, I’m having problems with no audio coming out, everything seems to be working at power supply and output section, the amplifier turns on but no audio out.

 

[PapaZBill]

I can't offer schematics but will offer any advice on how to troubleshoot.

Do you have a squarewave at L101 and L201? Post screenshots.

 

[rdiaz]

Ok, thank you for helping. I do have square wave at both output coils.

 

[rdiaz]

This resistor was burned 10ohm R35.

 

[rdiaz]

My question now, is this normal, at full gain?. Sorry about the images I don’t know why they are flipping.

 

[PapaZBill]

It looks right. 50v p-p pushed into clipping.

R35-10 ohm ties Speaker and Power grounds. This will cause a DC offset that will effect the muting circuit to ground the input signal.

 

[rdiaz]

Thank you for the information. ��

 

[Bakos]

Hey, im having the same issue. I checked the r35 resistor and is showed .6ohms. Took it off to replace it, checked the board and resistor, board showed .6ohms and the resister seemed to be fine at 10ohms. I put a new one in anyways and got .6ohms again.. amp seems to function properly but no output. Thanks for any input!

 

[Perry Babin]

Please don't post in a repair thread that was started by someone else unless you are trying to help them.

Start a new thread if you need help with a repair of your own.

 

[PapaZBill]

I will answer the one question and anymore questions will have to be addressed in a separate thread you create. This isn't to be uncooperative, it's to leave the threads uncluttered and easier for others to follow.

It's normal for R35 to read near 0 ohms in circuit. R35-10 ohms ties the power and speaker grounds, and it is essentially across the secondary of the transformer.

Hey, im having the same issue. I checked the r35 resistor and is showed .6ohms. Took it off to replace it, checked the board and resistor, board showed .6ohms and the resister seemed to be fine at 10ohms. I put a new one in anyways and got .6ohms again.. amp seems to function properly but no output. Thanks for any input!