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Post by u2nmg93 on Oct 27, 2017 8:45:24 GMT -5
Reads 0v on pin 19 and 14 ohms to ground.
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Post by u2nmg93 on Oct 25, 2017 20:29:06 GMT -5
Never got a NG error, all the channels work. I tried the master reset as well as a forced firmware update (Page 10). It updated but still no video out.
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Post by u2nmg93 on Oct 25, 2017 14:38:17 GMT -5
C8957-__3.3___ C8947-__1.8___ C8937-___1__ C8980-__3.3___ C8982-__1.8___ C8717-__1.1___ C8719-_1.1____
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Post by u2nmg93 on Oct 23, 2017 21:31:21 GMT -5
R8014, R8015 and R8035 are reading correctly. There wasn't a short between any of the pins and there was good ground contact on the appropriate pins.
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Post by u2nmg93 on Oct 20, 2017 9:32:33 GMT -5
I checked the socket, nothing obviously bent or damaged. I put an hdmi cable into it and another of the receivers I have apart and have continuity between each of the pins from the back of each connector. I do have 5vdc at pin 18 of the output hdmi socket as well as pin 16 and 15.
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Post by u2nmg93 on Oct 19, 2017 9:53:39 GMT -5
There is sound from HDMI in and bluetooth. The receiver is detecting the HDMI in signal. I turned on video and audio pass through and I still am not getting a video signal or sound at the tv with the receiver on or off.
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Post by u2nmg93 on Oct 18, 2017 11:32:29 GMT -5
Turns out solder joint was bad, went and re did it with an iron instead of the hot air gun. Receiver does turn on now and after it came on the display said "Please Update" press enter. I downloaded the firmware and put it on a thumb drive, updated via usb, took it maybe 30 seconds and it said "Complete!". Turned unit back on, I have sound but no video out. Forced the update which took about 30 minutes and still no video. Any idea where to go from here?
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Post by u2nmg93 on Oct 17, 2017 9:00:38 GMT -5
Pin 4 1.8v 9 assuming it's the bottom of chip? 0v or short 5 1.9v 6 No flow 8 No flow
3&4 .548v and no flow with probes flipped.
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Post by u2nmg93 on Oct 16, 2017 20:57:43 GMT -5
I'm all for the proper way to test and learning the reasons why we're doing what we're doing. Before I joined this forum I looked for the burnt or bulging parts and replaced those and when that didn't fix it I recycled it and got another. I don't have any formal training or education in electronics they've just always intrigued me. I don't know which comments are relevant or not or honestly how to read these schematics and figure out where to start and where to go from there. Sorry if I offended you, I really do appreciate the help.
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Post by u2nmg93 on Oct 16, 2017 16:47:10 GMT -5
I did put the inductor back in as well. Is there an easy way to test the hdmi chips for shorts? Also do they receive the 3.3v even when the receiver is off?
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Post by u2nmg93 on Oct 13, 2017 13:48:28 GMT -5
Replaced Q8961, receiver is still dead, but IC isn't getting hot anymore. On Q8961 pin 2 11.6v pin 3 0.3v pin 7 5.6v
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Post by u2nmg93 on Oct 10, 2017 20:49:35 GMT -5
C8967 is reading around 4.4 kohm still need to remove Q8961?
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Post by u2nmg93 on Oct 10, 2017 15:04:46 GMT -5
After removing L8962 on Q8961 pin 2 12v pin 3 0v pin 7 5.3v and it is still getting very hot.
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Post by u2nmg93 on Oct 10, 2017 14:23:34 GMT -5
Yes it is.
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Post by u2nmg93 on Oct 10, 2017 12:23:51 GMT -5
Was pulsing on both sides, I unplugged it and plugged it back in and now it reads 12v on both sides of L8961 and 12v at pin 2 0v at pin 3 on Q8961. Maybe I shorted something testing it? Receiver still won't turn on...
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