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Post by mastertech on Nov 24, 2016 14:24:01 GMT -5
yes
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ady
Junior Member
Posts: 45 
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Post by ady on Nov 24, 2016 14:51:20 GMT -5
after i verify ic802 i swap and put the ic802 in place of ic959. but i let empty the place of ic802.
and the voltage at cw118 now is 2.63
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ady
Junior Member
Posts: 45
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Post by ady on Nov 24, 2016 14:53:27 GMT -5
on the cx027 and cx028 i have 0.005v
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Post by mastertech on Nov 24, 2016 15:01:40 GMT -5
on the cx027 and cx028 i have 0.005v Is the unit powering on? |
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ady
Junior Member
Posts: 45
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Post by ady on Nov 24, 2016 15:04:49 GMT -5
yes
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Post by mastertech on Nov 24, 2016 15:06:19 GMT -5
This appears to be a different problem. Did you put the other ic back in at ic802?
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Post by mastertech on Nov 24, 2016 16:28:05 GMT -5
on the cx027 and cx028 i have 0.005v Did you check the fuse on this board (F801)? |
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ady
Junior Member
Posts: 45
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Post by ady on Nov 24, 2016 16:57:00 GMT -5
i will put back the ic.
the fuse is good
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Post by mastertech on Nov 24, 2016 16:59:55 GMT -5
Set DMM to AC voltage and test for voltage at CX031
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Post by mastertech on Nov 24, 2016 17:16:52 GMT -5
I looked over the schematics and the reason you do not have power on CX027 and CX028 is because it is not being turned on by the sub CPU and that is because the sub CPU is not working because of the problem with ic959 circuit.
So we must go back to trouble shooting that circuit. Can you test the input and output voltage of ic959? Input should be 2.63v but what is the output?
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ady
Junior Member
Posts: 45
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Post by ady on Nov 24, 2016 17:25:31 GMT -5
i will solder some wires to do that. after that i power on and test.
but i can test the output on cw159 pin1
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ady
Junior Member
Posts: 45
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Post by ady on Nov 24, 2016 17:27:05 GMT -5
at the cw159 scpu3.3v is 2.6v
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Post by mastertech on Nov 24, 2016 18:17:49 GMT -5
Now remove D952 and retest voltages.
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ady
Junior Member
Posts: 45
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Post by ady on Nov 25, 2016 0:49:28 GMT -5
I will try, it`s small. I will read the values of the D952,953 from ic959 and i will compare to thouse of ic802
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Post by mastertech on Nov 26, 2016 13:33:25 GMT -5
Did you get that D952 removed yet?  |
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