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AnalogRocks
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Joined: 08 Mar 2006
Posts: 26706
Location: Toronto, Ontario, Canada
TV/Projector: Sony 1252Q, AMPRO 4000G
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| Posted: Fri Feb 24, 2012 3:03 am Post subject: |
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What is it with guys named Jeremy getting stuck with broken equipment? 
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Jeremy112
Joined: 28 Sep 2006
Posts: 2649
Location: Fond du Lac, WI
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| Posted: Fri Feb 24, 2012 4:04 pm Post subject: |
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Well I brought this one upon myself  Just puzzed on why it wont turn on... 
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Fri Feb 24, 2012 4:12 pm Post subject: |
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| Jeremy112 wrote: | | Well I brought this one upon myself Just puzzed on why it wont turn on... |
Well we can continue if you wish....  But it will be getting a bit more tedious if we do...
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Jeremy112
Joined: 28 Sep 2006
Posts: 2649
Location: Fond du Lac, WI
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| Posted: Fri Feb 24, 2012 4:50 pm Post subject: |
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Well, it does me no good taking up my kitchen table May as well continue
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Fri Feb 24, 2012 5:36 pm Post subject: |
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Well there are still many reasons why it wont turn on so we have to try to find it. I would first like to see if the standby and on leds work so on the digital board, at connector BB409, are you able to remove 2 wires from the connector or would you have to cut them in order to do some testing? Also do you have a 100 ohm resistor?
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Jeremy112
Joined: 28 Sep 2006
Posts: 2649
Location: Fond du Lac, WI
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| Posted: Fri Feb 24, 2012 5:56 pm Post subject: |
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| macgyver655 wrote: | | Well there are still many reasons why it wont turn on so we have to try to find it. I would first like to see if the standby and on leds work so on the digital board, at connector BB409, are you able to remove 2 wires from the connector or would you have to cut them in order to do some testing? Also do you have a 100 ohm resistor? |
I do have a 100 ohm resistor, and connector BB409 has no wires, however, I am able to desolder the leads of BB409 on the board it connects to. (which looks to be just a printed circuit board that connects everything to everything)
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Jeremy112
Joined: 28 Sep 2006
Posts: 2649
Location: Fond du Lac, WI
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| Posted: Fri Feb 24, 2012 6:11 pm Post subject: |
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And in answer to your earlier question you asked last night, the switches on the digital board are positioned to where they were when I received it. I did not bump them or move them, so I have no idea if they are at denon settings.
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Fri Feb 24, 2012 6:16 pm Post subject: |
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I want you to try sending power to the green and red leds on the on/off board. But the circuit needs to be open as I dont want power going back through to the CPU. On BB409, pin 3 is green and pin 5 is red led. So disconnect those circuits how ever you need to. Use the 100 resistor to send the power through. When your ready to test you will plug in the receiver and turn on the master switch. On BB410, pin 10,11 is gnd and pins 12,13 are power. Try touching the leed of the resistor to gnd first to see if either one lights. If not then touch it to power. Do them 1 at a time.
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Jeremy112
Joined: 28 Sep 2006
Posts: 2649
Location: Fond du Lac, WI
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| Posted: Fri Feb 24, 2012 7:12 pm Post subject: |
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Mac,
I'll be honest I am having a bit of a hard time deciphering what you said, so lets make sure I understood you correctly,
You want me to desolder leads 3 and 5 on BB409 - Done no connection to the daughterboard it connects to (I beleive thats what you wanted)
Pins 10 and 11 are ground on BB410 and Pins 12 and 13 are power on BB410, My observation is Pins 12 and 13 are soldered together by denon.
Now You want me to connect one end of the resistor to say Pin 10 ground, then Pin 12 Positive correct? and so on?
Just want to make sure I am getting this right 
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Fri Feb 24, 2012 7:22 pm Post subject: |
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| Jeremy112 wrote: | Mac,
I'll be honest I am having a bit of a hard time deciphering what you said, so lets make sure I understood you correctly,
You want me to desolder leads 3 and 5 on BB409 - Done no connection to the daughterboard it connects to (I beleive thats what you wanted)
Pins 10 and 11 are ground on BB410 and Pins 12 and 13 are power on BB410, My observation is Pins 12 and 13 are soldered together by denon.
Now You want me to connect one end of the resistor to say Pin 10 ground, then Pin 12 Positive correct? and so on?
Just want to make sure I am getting this right |
No, not correct. Have you already desoldered 3 and 5 on BB409?
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Jeremy112
Joined: 28 Sep 2006
Posts: 2649
Location: Fond du Lac, WI
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| Posted: Fri Feb 24, 2012 7:28 pm Post subject: |
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| macgyver655 wrote: | | Jeremy112 wrote: | Mac,
I'll be honest I am having a bit of a hard time deciphering what you said, so lets make sure I understood you correctly,
You want me to desolder leads 3 and 5 on BB409 - Done no connection to the daughterboard it connects to (I beleive thats what you wanted)
Pins 10 and 11 are ground on BB410 and Pins 12 and 13 are power on BB410, My observation is Pins 12 and 13 are soldered together by denon.
Now You want me to connect one end of the resistor to say Pin 10 ground, then Pin 12 Positive correct? and so on?
Just want to make sure I am getting this right |
No, not correct. Have you already desoldered 3 and 5 on BB409? |
Yes I have, and that is why I messaged back, I didnt think what I was doing seemed right
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Fri Feb 24, 2012 7:36 pm Post subject: |
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I did want those 2 pins disconnected. It's just the testing part you didn't have right. So let me change my description.
Leaving pins 3 and 5 at BB409 disconnected, go to the front panel and to the board with the on/off and standby led. Locate CX101 on that board(you were here before).
Plug in the receiver and turn on the master switch. Now take that 100 ohm resistor and put 1 end in the connector CX101 pin 9. Then touch the other end of the resistor to pin 8 and see if the red led lights. it probably wont. If not then instead of that end in pin 8 touch it to pin 7, and see if the red led lights.
So your touching the resistor to pin 9 and 8 and if no led then pins 9 and 7.
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Jeremy112
Joined: 28 Sep 2006
Posts: 2649
Location: Fond du Lac, WI
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| Posted: Fri Feb 24, 2012 7:49 pm Post subject: |
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Mac, The LED did not light between pin 9 and 8 with the resistor, and it did not light between pin 9 and 7 with the resistor
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Jeremy112
Joined: 28 Sep 2006
Posts: 2649
Location: Fond du Lac, WI
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| Posted: Fri Feb 24, 2012 7:51 pm Post subject: |
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Correction, it DID light the red LED for pins 9 and 7, sorry
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Fri Feb 24, 2012 7:53 pm Post subject: |
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| Jeremy112 wrote: | | Correction, it DID light the red LED for pins 9 and 7, sorry |
Ok, good. Now try 10 and 7 and see in the green led lights.
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Jeremy112
Joined: 28 Sep 2006
Posts: 2649
Location: Fond du Lac, WI
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| Posted: Fri Feb 24, 2012 7:58 pm Post subject: |
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Yep, the green LED lights with Pins 10 and 7
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Fri Feb 24, 2012 7:59 pm Post subject: |
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ok, good. Now turn it off and go back to BB409 and reconnect those pins.
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Jeremy112
Joined: 28 Sep 2006
Posts: 2649
Location: Fond du Lac, WI
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| Posted: Fri Feb 24, 2012 8:04 pm Post subject: |
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They are reconnected
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Fri Feb 24, 2012 8:10 pm Post subject: |
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Ok, now we want to make sure we have a connection from the led board right to the CPU. So leave unplugged and set DMM to diode. You will be testing from CX101 connector right to the CPU pin numbers I give you. Make sure you test with your probe high on the CPU pin, right where it enters the chip.
First test, 1 probe on CX101 pin 10 and other probe on CPU pin 123. Should show short.
Second test, 1 probe on CX101 pin 9 and other probe on CPU pin 122. Should show short.
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Jeremy112
Joined: 28 Sep 2006
Posts: 2649
Location: Fond du Lac, WI
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| Posted: Fri Feb 24, 2012 8:26 pm Post subject: |
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With one leed on Pin 10 CX101 and one lead on CPU Pin 123 the DMM reads 104
With one leed on Pin 9 CX101 and one leed on CPU Pin 122 the DMM reads 021
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