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Post by tibimakai on Jun 7, 2022 10:03:55 GMT -5
Most likely. I did the same with a Pioneer unit.
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Post by tibimakai on May 30, 2022 18:56:56 GMT -5
I have to mention, that like three traces under the HDMI chip have lifted. If I remember correctly #1&2 and #46(I will actually have to confirm these pins) but it is hard to tell, if these traces should be connected to something under the IC, or they end there(IC leg). It may very well be one of these pins maybe should continue to something else and it is interrupted there. I liked the old schematics, where we had the PCB as well, and you can see, where all the traces go.
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Post by tibimakai on May 26, 2022 16:51:56 GMT -5
There are other recevers board that I could use? Like 737, or 636?
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Post by tibimakai on May 26, 2022 10:12:39 GMT -5
What do you think about the 4.87V, it is not to low? That firmware(or IC) can't be damaged, by the short that had initially?
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Post by tibimakai on May 25, 2022 10:20:11 GMT -5
No question marks.
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Post by tibimakai on May 24, 2022 10:39:14 GMT -5
I will have to check the display, but that is the only way for me to check. I don't have anything to connect to the HDMI board.
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Post by tibimakai on May 21, 2022 20:16:01 GMT -5
Any more ideas, what else can I try?
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Post by tibimakai on May 20, 2022 10:13:43 GMT -5
Thanks for that idea. Unfortunately there is no schematic for this sub. I will have to investigate the board. I remember when we (I mean you) fixed that Onkyo, that had a bunch of those smd transistors blown.
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Post by tibimakai on May 18, 2022 20:29:14 GMT -5
It pops with another speaker as well.
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Post by tibimakai on May 18, 2022 10:16:48 GMT -5
I was thinking about that also. I don't have the exact same speaker, but I have an older Klipsch 12" sub, that also needs to be repaired. I will try that as well. Thanks
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Post by tibimakai on May 17, 2022 21:09:25 GMT -5
Replaced the Q8302, updated the firmware again, and I have measured the voltages, and I don't really see nothing really off. 5.0SBVCC at pin #101 shows 4.87V, other voltages are 1.37V, 3.23V. Everything is still the same, no video. I have tried Main and Sub, and it still shows UNKNOWN at the input. Any other ideas would be appreciated.
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Post by tibimakai on May 17, 2022 3:20:45 GMT -5
That silicon, does not look like it is conductive yet. Everything looks fairly new and in good condition. I have removed one of those big capacitors(one of 4), also one of the 15V capacitors(next to the big one), the capacitor from the pwm ic(behind the heatsink) and they all have 0 or very close to it esr value. All these from picture #5.
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Post by tibimakai on May 17, 2022 3:14:47 GMT -5
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Post by tibimakai on May 17, 2022 3:14:01 GMT -5
That is possible, you are right. Here are some pictures.
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Post by tibimakai on May 16, 2022 14:04:53 GMT -5
I have measured the DC output, with the gain adjusted to the minimum and I have measured 3.3mV. I'm wondering what could have damaged, since the speaker tinsel wire was damaged(with an ohm meter I was measuring in the megaohm range). I'm thinking that something in the amp section, no?
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