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TEXASKLIPSCH

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  1. if you are referring to that green component and it's after a full wave rectifier to the right, then I think that's a thermistor. I couldn't track it down to anything, but noticed it had a TH3 printed on the circuit board right where it was standing. I replaced it with one that I believe was as close of a match as I could find. If the transformer isn't bad, then it's definitely something on the logic side that's preventing the amp from fulling powering on.. there's a 3 wire ribbon that plugs into a socket that's on the board that has the toggle switches and gain control. It's the power indicator LED at the front of the SUB10. I believe the most voltage I've seen out of one of the pins is about 1.5vdc. I think I need about 3vdc to power the LED. I'm getting power, but I'm missing some kind of switching voltage that turns the whole thing on. Pin 1 on the transformer seems to be tied to the drain of one of the IRF740 Mosfets. It's probably something simple and I've overlooked it.. a bad resistor or something that's keeping the whole thing turned off. It's not blowing fushes and I'm seeing 165VDC next to that large cap that's next to T1.
  2. I don't know if the RW-10 is the same as the SUB-10, but the transformer looks to be the same with the same amount of pins. If I measure between pins 1 & 2, it reads an open. All other pins look to be ok on the input side. The output side looks to be all good as well. Prior to me replacing, 2 MOSFETS before the input side of the transformer, a Thymistor right after the full wave bride rectifer, and a 200V 470uf cap, which is next to the transformer, all it would do is blow fuses. Now I can apply 120V, and it won't pop a fuse, but it won't power the amp circuit either. I'm reading a 165V next to that 470uf 200v cap next to the transformer, but no lower voltages after that.. I think I should be seeing around 60VAC on the output side of the transformer before it's switched to DC and then sent to the Power Amp MOSFETS.. The top of the transformer has the following: indigo 500126 Rev B / TWI 881692 B 0739. I can't seem to track down any kind of matching part #.. I want this fixed!! and I'll fix it if I can replace all the blown parts.. That's if I can find all of the... Else I wonder if Klipsch will fix it.. Appears to be a bad amp design..
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