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Post by tritron on Nov 22, 2014 20:19:50 GMT -5
It shows 5.69v
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Post by mastertech on Nov 22, 2014 20:25:18 GMT -5
AH, see. There is nothing wrong with the regulator you ordered. Something on another board is pulling down the 12v line.
Plug that harness back into CN1701 and follow it to the next board it connects to. On this board look for connector CP1700. Disconnect that harness and then go back and do your 12v test again. If this is something you cannot disconnect let me know.
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Post by tritron on Nov 22, 2014 20:39:39 GMT -5
I pull the connector out and it showed 11.55v
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Post by mastertech on Nov 22, 2014 21:14:36 GMT -5
Ok, plug it back in and recheck 12v just to be sure.
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Post by tritron on Nov 22, 2014 22:07:40 GMT -5
It is goes down to 2.56V is the input board bad? I unplugged the other connector going to main amplifier board.
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Post by mastertech on Nov 22, 2014 23:00:20 GMT -5
No, it is not the amp board.
Next go to the board that has the front A and center speaker connectors on it. It also has a bunch of relays. Look for connector CN1001. It is a 5 wire connector. Disconnect that harness or whatever it is and go back and test your 12v again.
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Post by tritron on Nov 22, 2014 23:14:58 GMT -5
Ipluged in the other connectors and unpluged cn1001 and it shows 2.65v
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Post by mastertech on Nov 22, 2014 23:28:10 GMT -5
Ok, it looks like your problem is on this board. But it may be a little tricky to find. You will probably have to remove some parts. But remove 1 at a time and recheck the 12v test every time.
First look for capacitor C1094, remove it and test 12v. If still at 2.65v then continue.
There looks to be 4 other parts that will tell us where to look. These are transistors but they may be very small. Receiver is unplugged for these tests. So I want you to test each 1 first with your DMM on diode scale and look for 1 that may have all 3 legs show shorted. If you find 1 short on all 3 legs remove it and test your 12v again. Other wise you will have to remove all 4 and test your 12v each time you remove 1. Remember to pay attention as to which 1 allows the 12v to return to normal because the transistor may not be the bad part but something it is connected to.
They are: Q1012, Q1013, Q1014 and Q1015.
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Post by tritron on Nov 23, 2014 13:22:02 GMT -5
I took the receiver a part can you tell me the parts for q1012 to q1015?
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Post by mastertech on Nov 23, 2014 14:20:29 GMT -5
Q are transistors. If you had to take it apart to where you cannot test the 12v every time you remove a part then take your DMM and set it to diode scale and test between ground and the cathode of a relay diode (D1003,D1004,D1005 or D1006). Let me know your reading.
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Post by tritron on Nov 23, 2014 18:45:55 GMT -5
The Q1013, Q1014 and Q1015 are on bottom of the board
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Post by mastertech on Nov 23, 2014 19:46:30 GMT -5
Are you lost or did you understand my last post?
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Post by tritron on Nov 23, 2014 20:59:10 GMT -5
It is very clear. I tested capacitor and it was showing 2.65v and i put it back and removed q1012 and it showed 2.65v so i will instal it back and remove q1013
D1004 shows at 0.322 on radio shack multimeter
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Post by mastertech on Nov 23, 2014 21:37:04 GMT -5
Ok, you are doing fine. Just one thing. I would not put any parts back in until the situation has been verified. You could have more then 1 bad part, right?
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Post by tritron on Nov 23, 2014 21:53:42 GMT -5
I took all the parts out and still 2.69v
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