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Jeremy112
Joined: 28 Sep 2006
Posts: 2649
Location: Fond du Lac, WI
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| Posted: Thu Jan 26, 2012 12:10 am Post subject: |
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Mac, that did something, it now reads 6.00vdc on pins 3 and 4
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Thu Jan 26, 2012 12:12 am Post subject: |
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| Jeremy112 wrote: | | Mac, that did something, it now reads 6.00vdc on pins 3 and 4 |
Ok, give me a sec..
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Thu Jan 26, 2012 12:14 am Post subject: |
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Put D402 back in and verify the DC is back down.
Did you test that diode?
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Jeremy112
Joined: 28 Sep 2006
Posts: 2649
Location: Fond du Lac, WI
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| Posted: Thu Jan 26, 2012 12:26 am Post subject: |
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I tested the diode and it was fine, it read 590 one way and open the other.
With D402 in place pins 3 and 4 read 2.40 vdc again
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Thu Jan 26, 2012 12:32 am Post subject: |
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Ok, we're getting closer so dont get frustrated.
How hard is it to remove RR446 and RR421? They should be in that same vicinity. If not to hard then remove them and test your DC again.
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Jeremy112
Joined: 28 Sep 2006
Posts: 2649
Location: Fond du Lac, WI
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| Posted: Thu Jan 26, 2012 12:36 am Post subject: |
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If its one of the black micro wafer things then I dont know which 2 those are,... I will keep looking
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Jeremy112
Joined: 28 Sep 2006
Posts: 2649
Location: Fond du Lac, WI
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| Posted: Thu Jan 26, 2012 12:38 am Post subject: |
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Hold on, I found RR446, its a regular resistor thank god, but I cannot locate RR421...
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Thu Jan 26, 2012 12:39 am Post subject: |
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They are both resistors. RR446 is a 1 watt so it should be to small. RR421 maybe smaller though.
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Thu Jan 26, 2012 12:40 am Post subject: |
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Just try that one first then. Remove it and test your DC
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Jeremy112
Joined: 28 Sep 2006
Posts: 2649
Location: Fond du Lac, WI
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| Posted: Thu Jan 26, 2012 1:07 am Post subject: |
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Ok, sorry it took so long, that board is not easy to get out and back in, it still reads 2.4vdc on pins 3 and 4
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Thu Jan 26, 2012 1:10 am Post subject: |
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well we're at a cross road again. We need to remove that RR421 to see which way to go.
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Jeremy112
Joined: 28 Sep 2006
Posts: 2649
Location: Fond du Lac, WI
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| Posted: Thu Jan 26, 2012 1:14 am Post subject: |
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Ill remove it if I can find it, lol that will be a task!
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Thu Jan 26, 2012 1:18 am Post subject: |
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It is directly connected to 1 leg of the RR446 that you have removed. It's also directly connected to RR424 and TR420
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Jeremy112
Joined: 28 Sep 2006
Posts: 2649
Location: Fond du Lac, WI
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| Posted: Thu Jan 26, 2012 1:21 am Post subject: |
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Found it! its located on the other side, its one of them wafer deals, ill be able to remove it
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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: Thu Jan 26, 2012 1:24 am Post subject: |
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Any bets that this thread will go longer than the 'joke of the day' one? 
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Thu Jan 26, 2012 1:25 am Post subject: |
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Actually we are nearing a conclusion. Our space is very small right now. 
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Jeremy112
Joined: 28 Sep 2006
Posts: 2649
Location: Fond du Lac, WI
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| Posted: Thu Jan 26, 2012 1:33 am Post subject: |
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Still reads 2.40 vdc on pins 3 and 4
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Thu Jan 26, 2012 1:38 am Post subject: |
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Ok, couple things for you to do. Near that CPU there should be an 8 pin header which is just a connector with pins to connect something to. Make sure none of the pins are bent or touching, if there are pins sticking up.
Then locate 2 electrolytic caps. C507 and C498. Remove them and test your DC. Should be near the CPU
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Jeremy112
Joined: 28 Sep 2006
Posts: 2649
Location: Fond du Lac, WI
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| Posted: Thu Jan 26, 2012 1:38 am Post subject: |
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| macgyver655 wrote: | | Actually we are nearing a conclusion. |
I find that hard to beleive at this stage 
| Quote: | | Our space is very small right now. |
You DAMN right its small, and tight too!!
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Jeremy112
Joined: 28 Sep 2006
Posts: 2649
Location: Fond du Lac, WI
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| Posted: Thu Jan 26, 2012 1:51 am Post subject: |
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Okay, it reads 2.45vdc now with the 2 electrolytics removed
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