I need a little help on some parts for this jl audio. I need to know the value of a resistor R237, the diodes at the output transistors. And the actual value of the smd capacitors C11' C12, C13, C67. Also I'm having trouble locating the hip2101s driver chip.
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DK has the driver ICs.
Why do you think the caps failed?
The orange diodes in series with the 20 ohm resistors are likely 1n4148 types (short).
Why do you think the caps failed?
The orange diodes in series with the 20 ohm resistors are likely 1n4148 types (short).
I removed the driver transistors and output transistors and recifiers to attempt to repair the power supply. Replaced two of the mmbt3904-06. But I don't get a drive signal. I was reading a short across one but it was coming from the driver ic. This kia494af is a different model than I have correct?
Sorry perry is the kia494af different that the tl494c that I have is stock? I'm trying to obtain gate drive.
It's the same as far as I know. I'm sure the operation is the same. Post the DC voltage on all of its terminals if you can't find the problem.
It's functioning. I printed out the pages on the tutorial for the pwm, since this is where I have been falling short in repairs. So I can learn more about the ic. Thanks perry.
I think they're just 1n4148 type diodes due to the way that they appear to be used. Are any defective?
They are all the same the fluke emitts a tone like it's shorted and it reads only .033v I believe them all to be.?
They (with a 20 ohm resistor) are in series parallel with a 20 ohm resistor. Look at the traces.
The parts came in today the driver chips and the 4R75 resistors, and the new outputs. Will it not power up without the rectifiers?!
I can not recall, but I believe so because of the burnt resistors and drivers and I was going to rebuild the output section it likely I removed them in advance.
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