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Post by tokejo on Jan 28, 2014 12:34:46 GMT -5
I was trying to read up on typical problems regarding the NR807 and it sounds like the other unit is experiencing an issue with the HDMI board (no video/no sound). I have to remove the HDMI board on this unit to unplug some of the connectors and get the main board out. Would it be okay to swap the HDMI boards to see if that gets the other AVR working, or do I risk having two damaged HDMI boards?
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Post by tokejo on Jan 27, 2014 22:11:11 GMT -5
900 one way, OL the other. I assume that means it's good?
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Post by tokejo on Jan 27, 2014 20:42:35 GMT -5
I keep getting the same thing with Q6011.
That transistor for the other channels is all OL, except for Q6011. I'm slowly figuring out how to detach the ribbon cables from the board to take the whole assembly out, but a couple of wires have me stumped.
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Post by tokejo on Jan 27, 2014 20:09:42 GMT -5
Could D6001 be labeled L6001?
If so, 000 both ways.
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Post by tokejo on Jan 27, 2014 19:39:58 GMT -5
Q6011 1-2 - 11 2-3 - 22 1-3 - 23
Tested with DMM on diode scale.
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Post by tokejo on Jan 27, 2014 18:55:19 GMT -5
R6101 -OL Q6111 - OL Q6101 - 784 (2-1), 755 (2-3) Q6031 - OL Q6041 - 784, 755 Q6011 - 7.3, 14.3, 13.9 (1-3) (maybe I was measuring this on on the Ohm scale and not diode?) Q6001 - Couldn't get to it Q6071 - OL D6001 - Couldn't Find R6301 - 2.4 and R6291 - 2.4 R6261 - 118.0 and R6251 - 118.5 R6271 - OL and R6281 - 21.9 R6071 - OL R6311 -10.2 I had reassembled everything to power it back on, I will disassemble as much as possible to get to Q6001 if necessary.
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Post by tokejo on Jan 27, 2014 18:02:13 GMT -5
None of the transistors on the 2nd AVR appear to be blown, values are similar to the first AVR. Starting on those resistors/transistors for the first AVR.
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Post by tokejo on Jan 27, 2014 13:11:36 GMT -5
The last box arrived this morning. I'll take a look at it, and the contents, this afternoon.
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Post by tokejo on Jan 26, 2014 23:10:36 GMT -5
I can't see any markings on the transistors that I pulled. Does your paperwork list what they are?
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Post by tokejo on Jan 26, 2014 22:18:30 GMT -5
I'll get back to this after work tomorrow (and measure the transistor values on the other AVR).
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Post by tokejo on Jan 26, 2014 18:37:16 GMT -5
What's the next step on this one? I couldn't figure out how to complete decouple the heatsink/board from the rest of the boards because of all the ribbon cables, but I got it loose enough that I could check out the underside of the board. I should be able to desolder those six snipped leads tomorrow.
Hold off on ordering replacement transistors until we determine if any other parts are faulty?
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Post by tokejo on Jan 26, 2014 18:13:20 GMT -5
Ok, everything back together, plugged it in and it powered right up. Connected an AM antenna and a single speaker to the left front channel and was able to get the Hawks game.
Now to fix the front right channel?
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Post by tokejo on Jan 26, 2014 17:53:42 GMT -5
No, should I? I'll reconnect everything and get it ready.
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Post by tokejo on Jan 26, 2014 17:23:28 GMT -5
Ok, I just clipped the leads because I realized I only have a 15W soldering iron in the house and that's not going to cut it for desoldering them. I'll pick up another iron tomorrow.
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Post by tokejo on Jan 26, 2014 16:40:57 GMT -5
Looks like that might take a while, getting started now.
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