nashou
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Post by nashou on Mar 16, 2017 20:49:35 GMT -5
good. Now jump the 5v to standby at cn902 and recheck the 5v at the same connector (cn902). 5.19  |
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Post by mastertech on Mar 16, 2017 20:53:53 GMT -5
Great. That part of the circuit looks to be operating correctly. If you still have time take another optocoupler and put it in ic909. In this case you will be testing for the 5v at the vcc of ic'c 901 and 902. After installed, when the standby is not jumped at cn902 there should be almost no voltage at both vcc's. when the standby is jumped with the 5v then there should be app. 5v at the 2 vcc's of ic901 and ic902.
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nashou
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Post by nashou on Mar 16, 2017 21:02:04 GMT -5
Great. That part of the circuit looks to be operating correctly. If you still have time take another optocoupler and put it in ic909. In this case you will be testing for the 5v at the vcc of ic'c 901 and 902. After installed, when the standby is not jumped at cn902 there should be almost no voltage at both vcc's. when the standby is jumped with the 5v then there should be app. 5v at the 2 vcc's of ic901 and ic902. yep looks good , ic901 Vcc was lower tho at 4.54. |
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Post by mastertech on Mar 16, 2017 21:04:16 GMT -5
What was it at ic902?
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nashou
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Post by nashou on Mar 16, 2017 21:05:19 GMT -5
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Post by mastertech on Mar 16, 2017 21:09:39 GMT -5
Funny, that is a direct connect. We wont worry about it for now.
I am curious what the DC voltage is now at BD901, pins 1 and 4? The PFC should be working now with the standby jumped to the 5v.
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nashou
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Post by nashou on Mar 16, 2017 21:14:35 GMT -5
Funny, that is a direct connect. We wont worry about it for now. I am curious what the DC voltage is now at BD901, pins 1 and 4? The PFC should be working now with the standby jumped to the 5v. Yeah I noticed that. BD901 is 169.7 Nashou |
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Post by mastertech on Mar 16, 2017 21:19:36 GMT -5
Well I guess we should wait until you get the new parts and see if you get the 12v and 24v supplies back and then go from there. Keep me updated.
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nashou
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Post by nashou on Mar 16, 2017 21:23:51 GMT -5
Well I guess we should wait until you get the new parts and see if you get the 12v and 24v supplies back and then go from there. Keep me updated. Yeah, but in the SM it says to check Q925. I can't find it ? Miss print? I too wonder why the 400vdc isn't there.  |
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Post by mastertech on Mar 16, 2017 21:24:32 GMT -5
Did you say you replaced ic902?
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nashou
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Post by nashou on Mar 16, 2017 21:28:24 GMT -5
Did you say you replaced ic902? yes i did, I do have another incase it went bad while diagnosing the repair . Nashou |
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Post by mastertech on Mar 16, 2017 21:28:47 GMT -5
Well I guess we should wait until you get the new parts and see if you get the 12v and 24v supplies back and then go from there. Keep me updated. Yeah, but in the SM it says to check Q925. I can't find it ? Miss print? I think that should be Q916. |
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Post by mastertech on Mar 16, 2017 21:29:54 GMT -5
Did you say you replaced ic902? yes i did, I do have another incase it went bad while diagnosing the repair . Nashou Did you test R924 and R926? You have to lift 1 leg on each to test. |
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nashou
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Post by nashou on Mar 16, 2017 21:31:29 GMT -5
yes i did, I do have another incase it went bad while diagnosing the repair . Nashou Did you test R924 and R926? You have to lift 1 leg on each to test. Those were replaced with new. Nashou |
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Post by mastertech on Mar 16, 2017 21:33:26 GMT -5
Well lets wait until you get the parts and if we have a problem we can look into it further then.
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