Klipsch RW-10 LED is not turning on

[R_J]

Re: Klipsch R-10W LED is not turning on

I don't know how much the fluke outputs in diode test, if the meter does'nt work, reverse the leads going from the board to the led if you can, then if it lights green in standby or red when its working should give an indication of its condition

[tibimakai]

Re: Klipsch R-10W LED is not turning on

I have tried reversing, but the green doesn't light up at all.

[Per Hansson]

Re: Klipsch RW-10 LED is not turning on

I have corrected the model number within 30 minutes, why it is still showing the wrong model number? It is a RW-10.

I fixed that for you

When the LED it was Red, it was showing 1.7V.
Maybe the Green LED is bad, that is why is not turning on?
I have measured the voltage, at that connector, with the LED disconnected and there is 14.3V(!).

Take a look at the following video to get a better understanding how that circuit works.
https://www.youtube.com/watch?v=qHbkw0Gm7pk

[CapLeaker]

Re: Klipsch RW-10 LED is not turning on

LED's do not like to be over powered at all. My Fluke 289 and the 179 can light up a green LED no problem. So at this point I'd say it's the LED.

[R_J]

Re: Klipsch R-10W LED is not turning on

I have tried reversing, but the green doesn't light up at all.

with the leads in the original position the RED led lights, By reversing the leads going to the led, the green led should light, if it does'nt the green led in the bi-led is bad.
To confirm the circuit works, find a led and connect it one way. it should light in standby, when you reverse the led it should light when the sub is on. or use 2 leds connected in parallel with one reversed to the other

[tibimakai]

Re: Klipsch RW-10 LED is not turning on

Per Hanson, thank you for both.
I will order a new LED and I will let everybody know, how it went.

[tibimakai]

Re: Klipsch RW-10 LED is not turning on

So I gave it a try with the power supply and it works both ways, red and green.
It seems like, I have the same issue, as in Dave's video.
What can I do in this case, get another LED anyway?

[R_J]

Re: Klipsch RW-10 LED is not turning on

When you place the switch in the ON position, does the RED led come on? also please monitor the voltage at J5 pin 1 and note the polarity

[tibimakai]

Re: Klipsch RW-10 LED is not turning on

The Red only comes on, after 15 minutes.
If I set it to ON, there is no LED on.

[R_J]

Re: Klipsch RW-10 LED is not turning on

edit

[tibimakai]

Re: Klipsch RW-10 LED is not turning on

Sorry R J, but I'm not working on it. I'm gardening. Later I will look into it.

[R_J]

Re: Klipsch RW-10 LED is not turning on

I guess try a new led

[tibimakai]

Re: Klipsch RW-10 LED is not turning on

I have watched earlier, Dave's Youtube video, posted by Per Hannson and I may have the same issue.

[budm]

Re: Klipsch RW-10 LED is not turning on

The output of the IC must be working other wise it will not be turning the MOSFET in the power amp section ON and OFF.
When the OUTPUT of the U5 is +14V then the AMP should have no sound due the MOSFET is turned on and GND out the input signal to the power amp, the RED LED is also bias on.
When the output of U5 is (-) then the MOSFET is turned off so you will get sound and the GREEN LED is ON, so it is important to tell us what Negative Voltage you have on U5 output when you get sound. BTW, it is only ture if U5 in your amp matches the Schematic you posted.
When you turn the AUTO switch OFF to force on the amplifier, that switch forces the output of U5 negative o keep the MOSFET off and the GREEN LED will be on all the time, so all you have to do is to turn off the AUTO function and check the Voltage on the LED connector, it is very simple circuit.
BTW, when you test the green LED what Voltage do you get between the 2 legs of the LED?
My FLUKE 79III, 87 and 187 have no problem lighting up RED/GREEN LEDS.

[tibimakai]

Re: Klipsch RW-10 LED is not turning on

Soon, I will sit down and start going through your guys suggestions.
I have a LM324N in there.
My 189, does not light up the LED either ways. Now, I have it removed.
Power supply is turning it on though. I have set the "A" to to smallest adjustment(fine and course), other then turning it off completely and it was still lighting up.
I can try it, with my 87V as well.

[R_J]

Re: Klipsch RW-10 LED is not turning on

The service manual parts list shows U5 as LM324 but the schematic labels it a tl034

[tibimakai]

Re: Klipsch RW-10 LED is not turning on

I have noticed that as well.
Some things are different, maybe different year model.
I don't have a J5 connector, I have an H5 one, for the LED.

[budm]

Re: Klipsch RW-10 LED is not turning on

Try other RED LEDs with your meter, I cannot believe that 189 does not light up the LED, I have 189 at work and it lights up LED just fine.

[budm]

Re: Klipsch RW-10 LED is not turning on

So what is the Negative Voltage are you getting at the output of the IC? It has to be Negative at this point otherwise you will not be getting any sound.
BTW, if you check the R/G LED in Ohm mode, what do you get?

[tibimakai]

Re: Klipsch RW-10 LED is not turning on

I have just tried, with the 87V and it does not light up either way.
The resistance, in one way is 3.1KOhm and the other way, is 6.4KOhm.
I have just came in, from an all day gardening and I'm exhausted.
Sorry guys, but I will come back to this, maybe on Tuesday.
Tomorrow I will work, on my garage ceiling(making a ceiling in my garage, installing my motorized projector screen, installing a motorized projector lift, installing outlets, etc..
I also have to work, on a Benq W1070 projector, I need to replace a color wheel and a blower fan, that have arrived for a couple of days already.