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Jeremy112
Joined: 28 Sep 2006
Posts: 2649
Location: Fond du Lac, WI
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| Posted: Sat Jan 28, 2012 7:50 pm Post subject: |
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Ordered the CPU today mac, dont know how long it will take, I havent ordered from digi-key before. I'm just glad they had 8 available, Ill bet that could be a bit hard of a chip to find otherwise!
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Jeremy112
Joined: 28 Sep 2006
Posts: 2649
Location: Fond du Lac, WI
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| Posted: Wed Feb 01, 2012 5:26 pm Post subject: The CPU is in! |
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Mac, Just thought I'd let ya know that the CPU has arrived for the Denon. The packaging digi key had was awesome, and the packing from the original manufacturer is even more impressive.
I have opened the CPU packaging up, just took it out of the digi key box.
So whats the next step in this endeavor?
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Wed Feb 01, 2012 6:04 pm Post subject: Re: The CPU is in! |
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| Jeremy112 wrote: | Mac, Just thought I'd let ya know that the CPU has arrived for the Denon. The packaging digi key had was awesome, and the packing from the original manufacturer is even more impressive.
I have opened the CPU packaging up, just took it out of the digi key box.
So whats the next step in this endeavor? |
If you want me to change it then send me an email and we'll go over the details.
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Curt Palme
CRT Tech
Joined: 08 Mar 2006
Posts: 24396
Location: Langley, BC
TV/Projector: All of them!
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| Posted: Wed Feb 01, 2012 11:09 pm Post subject: Re: The CPU is in! |
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| Jeremy112 wrote: |
So whats the next step in this endeavor? |
Stare at it lovingly while thinking: "WTF do I do with this?'
(sorry, blowing off some steam this afternoon) 
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Jeremy112
Joined: 28 Sep 2006
Posts: 2649
Location: Fond du Lac, WI
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| Posted: Thu Feb 23, 2012 8:24 pm Post subject: |
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Okay,
looks like its time to get this topic started back up here 
Just an update for everyone whose been reading, Mac repaired the board (and quite an amazing job he did at that!) and after installing it, it still did not fix the no power issue 
Anyway, Mac if you are around, I am ready to continue on this epic journey 
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Thu Feb 23, 2012 8:34 pm Post subject: |
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It didn't surprise me when you told me it still did not turn on. A cpu doesn't usually go bad all by itself. And more then likely was damaged by someone else trying to fix the original problem or the damaged power board.
Anyways, first thing you have to do is go back to the beginning and connect your DMM to the 3647 3638 board, CX054 connector, pos to pin 3 and neg to pin 4 and see what your DC is when plugged in and the power switch latched.
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Jeremy112
Joined: 28 Sep 2006
Posts: 2649
Location: Fond du Lac, WI
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| Posted: Thu Feb 23, 2012 9:18 pm Post subject: |
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Mac, sorry it took a bit to reply here,
DC is 6.02V on CX054
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Thu Feb 23, 2012 9:21 pm Post subject: |
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| Jeremy112 wrote: | Mac, sorry it took a bit to reply here,
DC is 6.02V on CX054 |
Thats good. Right where it should be. This is with everything connected, right? And you don't have a standby led at the power button, correct?
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Jeremy112
Joined: 28 Sep 2006
Posts: 2649
Location: Fond du Lac, WI
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| Posted: Thu Feb 23, 2012 9:22 pm Post subject: |
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| macgyver655 wrote: | | Jeremy112 wrote: | Mac, sorry it took a bit to reply here,
DC is 6.02V on CX054 |
Thats good. Right where it should be. This is with everything connected, right? And you don't have a standby led at the power button, correct? |
Figured as much, nice to see one thing working on this beast anyway
Yep, that is with everything plugged in, and there is no red standby LED
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Thu Feb 23, 2012 9:32 pm Post subject: |
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Ok, on the digital board (3644) locate BB409 and BB410. This test will be with the receiver unplugged. Set your DMM to diode or continuity and connect 1 leed to pin 7 or BB409 and the other leed to pin 10 of BB410.
Now press the power button and see if the DMM shows short.
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Jeremy112
Joined: 28 Sep 2006
Posts: 2649
Location: Fond du Lac, WI
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| Posted: Thu Feb 23, 2012 9:46 pm Post subject: |
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| macgyver655 wrote: | Ok, on the digital board (3644) locate BB409 and BB410. This test will be with the receiver unplugged. Set your DMM to diode or continuity and connect 1 leed to pin 7 or BB409 and the other leed to pin 10 of BB410.
Now press the power button and see if the DMM shows short. |
With the main switch engaged, and one lead connected to pin 7 on BB409 and one lead connected to pin 10 on BB410, pressing the standby/power button, it does not short out, it reads 562 (as it does before pressing the button and after)
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Thu Feb 23, 2012 10:01 pm Post subject: |
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Well thats actually good even though it's not working. Now your going to have to go to the front panel. Locate the board that has the on/off tact switch (3640). On that board is connector CX101. Again with DMM on diode or continuity, 1 leed in pin 6 and the other leed in pin 8, press that button and see if you have short.
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Jeremy112
Joined: 28 Sep 2006
Posts: 2649
Location: Fond du Lac, WI
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| Posted: Thu Feb 23, 2012 10:11 pm Post subject: |
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| macgyver655 wrote: | | Well thats actually good even though it's not working. Now your going to have to go to the front panel. Locate the board that has the on/off tact switch (3640). On that board is connector CX101. Again with DMM on diode or continuity, 1 leed in pin 6 and the other leed in pin 8, press that button and see if you have short. |
No short between pin 1 and pin 6 on CX101 when pressing the power/standby button. 
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Thu Feb 23, 2012 10:13 pm Post subject: |
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| Jeremy112 wrote: | | macgyver655 wrote: | | Well thats actually good even though it's not working. Now your going to have to go to the front panel. Locate the board that has the on/off tact switch (3640). On that board is connector CX101. Again with DMM on diode or continuity, 1 leed in pin 6 and the other leed in pin 8, press that button and see if you have short. |
No short between pin 1 and pin 6 on CX101 when pressing the power/standby button. |
Either you mistyped or your not paying attention. 
Pins 6 and 8 on CX101
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Jeremy112
Joined: 28 Sep 2006
Posts: 2649
Location: Fond du Lac, WI
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| Posted: Thu Feb 23, 2012 10:15 pm Post subject: |
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| macgyver655 wrote: | | Jeremy112 wrote: | | macgyver655 wrote: | | Well thats actually good even though it's not working. Now your going to have to go to the front panel. Locate the board that has the on/off tact switch (3640). On that board is connector CX101. Again with DMM on diode or continuity, 1 leed in pin 6 and the other leed in pin 8, press that button and see if you have short. |
No short between pin 1 and pin 6 on CX101 when pressing the power/standby button. |
Either you mistyped or your not paying attention.
Pins 6 and 8 on CX101 |
Holy moly! let me check it again! 
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Jeremy112
Joined: 28 Sep 2006
Posts: 2649
Location: Fond du Lac, WI
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| Posted: Thu Feb 23, 2012 10:16 pm Post subject: |
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Ok.. my bad!! It does short out on pins 6 and 8 Sorry mac!
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Thu Feb 23, 2012 10:23 pm Post subject: |
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Ok good. No problem, as long as I keep catching your mistakes, LOL.
Now I'm going to give you 2 things to do and I'm going for dinner.
In that front panel is board number 3640-2. Locate connector CY272. Should be 27 pins. Test that power switch at that connector using pins 7 and 24.
Then I want you to set your DMM to DC and plug in the receiver and turn on the main power switch. Using pin 24 on that connector for ground then test with your pos leed for +5v on pins 22,23,26,27.
See you in a half hour.
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Jeremy112
Joined: 28 Sep 2006
Posts: 2649
Location: Fond du Lac, WI
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| Posted: Thu Feb 23, 2012 11:27 pm Post subject: |
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Mac,
Pins 7 and 24 on CY272 when pressing the power/standby button do short out.
The readings on Pins 22, 23, 26 and 27 are as follows:
Pin 22: 0.0 Vdc
Pin 23: 0.0 Vdc
Pin 26: 5.35 Vdc
Pin 27: 5.35 Vdc
Took a while to verify what pins were what, but I do have the schematic here as well (that is about the extent of my abilities to read this ungodly complicated schematic ) so I was able to figure it out, I checked, rechecked, and then checked again to make sure.
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Thu Feb 23, 2012 11:36 pm Post subject: |
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Ok, something is not right with no short on pins 7 and 24 as these are connected directly to CX101 pins 6 and 8. So where going to test continuity again but no need to push the power button. This will be testing traces. So this time on that tact board (3640-2) your looking for short between CW101 pin 8 and CY272 pin 24. Then check between CX101 pin 6 and CY272 pin 7.
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Jeremy112
Joined: 28 Sep 2006
Posts: 2649
Location: Fond du Lac, WI
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| Posted: Thu Feb 23, 2012 11:44 pm Post subject: |
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| Jeremy112 wrote: | Mac,
Pins 7 and 24 on CY272 when pressing the power/standby button do short out.
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They DO short out mac Now whose not paying attention:P
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