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Post by Decibel on Jul 14, 2015 2:46:51 GMT -5
Reassuming:
Now we have
R64 and R455 removed
Q400 removed
D400 one pin lifted
D401 one pin lifted
Correct?
The issue could be in one of these components?
p.s. fuse F450 not installed
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Post by mastertech on Jul 14, 2015 8:36:00 GMT -5
Put fuse F450 back in and test projector.
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Post by Decibel on Jul 14, 2015 8:50:17 GMT -5
Put fuse F450 back in and test projector. Without some parts of smps sub board? What could happen? |
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Post by Decibel on Jul 14, 2015 8:51:42 GMT -5
Reinsert all boards, controller tray?
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Post by mastertech on Jul 14, 2015 8:55:33 GMT -5
Reinsert all boards, controller tray? Yes, put it all back together. I suspect it will turn on and run. |
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Post by mastertech on Jul 14, 2015 8:56:37 GMT -5
Put fuse F450 back in and test projector. Without some parts of smps sub board? What could happen? I will explain what the parts you left out do later, after your test. |
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Post by Decibel on Jul 14, 2015 9:00:58 GMT -5
Now I'm home and I can not do the test. However during the last test the other led diode green left off.
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Post by mastertech on Jul 14, 2015 9:11:54 GMT -5
I assume you mean you are not at home.
What other green light?
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Post by Decibel on Jul 14, 2015 9:24:04 GMT -5
In the sub board there's two diode led.
D451 and other that don't remember.
I believe, but now I'm not sure, that also this other diode is a part of ++9 circuit.
This diode light up in brilliant green when ++9v was dead.
Now is turn off.
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Post by mastertech on Jul 14, 2015 9:51:56 GMT -5
In the sub board there's two diode led. D451 and other that don't remember. I believe, but now I'm not sure, that also this other diode is a part of ++9 circuit. This diode light up in brilliant green when ++9v was dead. Now is turn off. I think it would probably be off with the fuse removed. Try putting the fuse in and test the projector. After that I am going to have you start installing the remaining removed parts and test as we go along. I know which part is bad but i want to verify as we go along. And also see if the projector runs now or has other problems. |
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Post by Decibel on Jul 14, 2015 10:09:32 GMT -5
Ok I will reinsert fuse and test projector when back in home.
But before insert all boards I would to test ++9 as latest tests.
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Post by mastertech on Jul 14, 2015 11:48:51 GMT -5
I only want you to test it once with the fuse installed and only run it long enough to see if it comes on normal. So install all boards to do test. If the projector does not come on all the way with a menu then test the 9v again before you shut it down.
I do not want it to run long or multiple times with these parts removed.
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Post by Decibel on Jul 14, 2015 13:54:50 GMT -5
Tried ... no reaction.
Projector no run..
++9v present.
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Post by mastertech on Jul 14, 2015 16:11:34 GMT -5
Interesting. Must be something on another page that this schematic didn't point to.
Ok, then install R64, R455 and Q400.
Leave D400 and D401 out.
See if projector starts up now.
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Post by Decibel on Jul 15, 2015 0:40:36 GMT -5
I saw a spark.
Something burned in PFC board.
I think that I seek SMPS + PFC boards for replace.
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