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Post by mastertech on Mar 28, 2017 14:41:02 GMT -5
I have not used a scope in so long I couldn't tell you. I guess at this point you could try just changing all small parts that could affect that voltage and if nothing changes then the xformer possibly was damaged. That ic was damaged pretty badly.
D908,ZD910,ZD913,D924,ZD911,C969,C945,C939,R917,R991,R921.
And probably can't rule out possibly ic903 not functioning properly.
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nashou
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Post by nashou on Mar 28, 2017 18:33:44 GMT -5
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nashou
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Post by nashou on Mar 28, 2017 19:37:31 GMT -5
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Post by mastertech on Mar 28, 2017 19:50:12 GMT -5
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nashou
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Post by nashou on Mar 28, 2017 20:05:09 GMT -5
Sent them and that other place e-mails. How do you test a xfmr it has continuity between pins. I think I need to pull it. Nashou |
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Post by mastertech on Mar 28, 2017 20:26:18 GMT -5
How do you test a xfmr it has continuity between pins. You would have to do a "ring test". |
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Post by mastertech on Apr 6, 2017 12:28:19 GMT -5
Sent them and that other place e-mails. How do you test a xfmr it has continuity between pins. I think I need to pull it. Nashou I am curious of what the status is? |
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nashou
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Post by nashou on Apr 6, 2017 21:20:22 GMT -5
NO luck, nothing.
The Green place has to get them from Isreal and shipping be a lot he said. Not worth it.
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Post by mastertech on Apr 6, 2017 22:22:55 GMT -5
Well since the TV P/S seems to have all the proper voltages using the external P/S for the ic's you could probably put it in the TV and see if it works properly before trying to find more parts.
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nashou
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Post by nashou on Apr 18, 2017 9:05:50 GMT -5
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Post by mastertech on Apr 18, 2017 9:10:01 GMT -5
Before I answer that question did you try powering up the TV like I indicated in my last post to see if there is anything else wrong with it? Before spending more money?
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nashou
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Post by nashou on Apr 18, 2017 11:15:59 GMT -5
Before I answer that question did you try powering up the TV like I indicated in my last post to see if there is anything else wrong with it? Before spending more money? No I did not. I will when I get some free time . Thanks Mac. Nashou |
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nashou
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Post by nashou on Apr 18, 2017 12:07:30 GMT -5
Ok Tried it with no luck. checked the 400 volts and it was down to 169 again . so I pulled the connectors to the panels and still nothing. then I disconnected the other connector that goes to the input board where we put the jumper and re installed the jumper with all connectors out just to check that the PS is working with the external PS ( incase something came loose) and I have the 400 vdc back, with jumper inlace. so whats next?
No signal to get the Standby up right?
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Post by mastertech on Apr 18, 2017 14:55:21 GMT -5
Right. Does the 5v at the connector remain at 5v when connected to the input board? No jumper.
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nashou
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Post by nashou on Apr 18, 2017 15:30:21 GMT -5
Right. Does the 5v at the connector remain at 5v when connected to the input board? No jumper. At work, will test that point later tonight. nashou |
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