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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Fri Feb 24, 2012 8:41 pm Post subject: |
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| Jeremy112 wrote: | 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 |
That 104 is a little high, probably just a poor connection somewhere but it's for the green so we wont worry about it right now.
1 more test on that led board and we're done there.
Receiver plugged in and main switch on. DMM on DC. neg leed to CX101 pin 8 and pos leed to pin 7. Should read +5v.
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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 8:45 pm Post subject: |
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| macgyver655 wrote: | | Jeremy112 wrote: | 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 |
That 104 is a little high, probably just a poor connection somewhere but it's for the green so we wont worry about it right now.
1 more test on that led board and we're done there.
Receiver plugged in and main switch on. DMM on DC. neg leed to CX101 pin 8 and pos leed to pin 7. Should read +5v. |
With neg lead on pin 8 CX101 and pos leed on pin 7 CX 101 the DMM read 0.53 vdc
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Fri Feb 24, 2012 9:07 pm Post subject: |
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| Jeremy112 wrote: | | macgyver655 wrote: | | Jeremy112 wrote: | 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 |
That 104 is a little high, probably just a poor connection somewhere but it's for the green so we wont worry about it right now.
1 more test on that led board and we're done there.
Receiver plugged in and main switch on. DMM on DC. neg leed to CX101 pin 8 and pos leed to pin 7. Should read +5v. |
With neg lead on pin 8 CX101 and pos leed on pin 7 CX 101 the DMM read 0.53 vdc |
Hmm, thats not right. It's plugged in and the main switch is on?
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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 9:12 pm Post subject: |
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| macgyver655 wrote: | | Jeremy112 wrote: | | macgyver655 wrote: | | Jeremy112 wrote: | 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 |
That 104 is a little high, probably just a poor connection somewhere but it's for the green so we wont worry about it right now.
1 more test on that led board and we're done there.
Receiver plugged in and main switch on. DMM on DC. neg leed to CX101 pin 8 and pos leed to pin 7. Should read +5v. |
With neg lead on pin 8 CX101 and pos leed on pin 7 CX 101 the DMM read 0.53 vdc |
Hmm, thats not right. It's plugged in and the main switch is on? |
Yes, it is plugged in, main switch on, i rechecked and it is the same result
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Fri Feb 24, 2012 9:15 pm Post subject: |
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We have already previously checked these lines. They are just gnd and +5v. You seem to have intermittent connection problems between here and the digital board. What was the problem before when you were going to run a jumper wire and then you found the problem?
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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 9:18 pm Post subject: |
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There was a cable disconnected, it went to CX084 on the daughterboard that the digital board connects to. CX084 is in front of BB905s daughterboard connection
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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 9:19 pm Post subject: |
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Also, I am looking the receiver over, and nothing else is disconnected, I am sure of that.
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Fri Feb 24, 2012 9:21 pm Post subject: |
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Make sure your DMM is on DC. Put your neg leed somewhere on chassis gnd and pos leed back in CX101 pin 7. Do you have +5v?
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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 9:32 pm Post subject: |
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Mac, something is going on with the receiver... I checked board 3638-6 for the 6v and I am getting 0v, I am also getting nothing on CX101 at all...
I just thuroughly looked over every connection and everything seems to be in order 
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Fri Feb 24, 2012 9:34 pm Post subject: |
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Check for AC input on 3638-6 at CX938 pins 1 and 3.
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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 9:39 pm Post subject: |
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there is 12.8 v AC on CX938 Pins 1 and 3
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Fri Feb 24, 2012 9:41 pm Post subject: |
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| Jeremy112 wrote: | | there is 12.8 v AC on CX938 Pins 1 and 3 |
And no DC output on this board at CX054 pins 3 and 4?
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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 9:44 pm Post subject: |
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| macgyver655 wrote: | | Jeremy112 wrote: | | there is 12.8 v AC on CX938 Pins 1 and 3 |
And no DC output on this board at CX054 pins 3 and 4? |
None
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Fri Feb 24, 2012 10:06 pm Post subject: |
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Test ic406. DMM on diode, should test 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 10:22 pm Post subject: |
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The IC406 tests as open one way and counts upwards in the other way
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Fri Feb 24, 2012 10:30 pm Post subject: |
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That ic is just a fuse. Do you have any pico fuses?
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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 10:35 pm Post subject: |
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| macgyver655 wrote: | | That ic is just a fuse. Do you have any pico fuses? |
Yes I do 
Never seen an IC get used as a fuse, different
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Fri Feb 24, 2012 10:39 pm Post subject: |
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| Jeremy112 wrote: | | macgyver655 wrote: | | That ic is just a fuse. Do you have any pico fuses? |
Yes I do
Never seen an IC get used as a fuse, different |
The question is did you accidently short something and popped the fuse or did that regulator go bad. Or how about you repair to that board. You may want to test ic405 to see if any legs show close to short. DMM on diode scale.
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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 10:45 pm Post subject: |
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None of the legs on IC405 show short, or even close to short. it appears to be fine
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Fri Feb 24, 2012 10:50 pm Post subject: |
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That fuse is 0.6 amp. How close of a pico do you have?
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