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Post by Decibel on Jul 6, 2015 8:34:08 GMT -5
smps subboard (generation ++9v) smps2 board (used to feed some ad/da chips for voltage diagnotics) pcf board (used for delay on/off smps and start pcf) remote (backlight and ir data generation) controller board (core voltage controller) I try to summarize too. I have some spare boards that I assume they fully works, including. SMPS SMPS2 The issue, as you and other friends said, should be located somewhere in the ++9v circuit. The boards that use ++9v and have no spares are: controller, PFC, motherboard and buit in remote. But ... We detect absence of ++9v when built in remote and controller tray are pulled. Remain motherboard and PFC. Correct? |
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Post by Decibel on Jul 6, 2015 8:42:52 GMT -5
guys, this is not a competition to see who guesses and will have a prize. My interest is to solve the issue of my projector. We can discuss everybody. I say thanks now and at the end, at all in the same way. mastertech: My meter have no range for check diodes, only one position and result the test that you ask is "1". |
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Post by Decibel on Jul 6, 2015 8:46:40 GMT -5
mastertech: My meter have no range for check diodes, only one position and result the test that you ask is "1". Now I don't remember if after replace cap C62 in PFC board this value has changed, I must to try it. |
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Post by dummyload on Jul 6, 2015 8:49:22 GMT -5
At mastertech ,good question i assumed open circuit.
at Decibel you can crap remote and controller from your list for now (not meaning there can nothing be wrong with them) they have nothing to do with the ++9v problem if you still have about +3v while they are disconnected from the mother board.
So yes pcf and mother board are left.
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Post by mastertech on Jul 6, 2015 8:52:36 GMT -5
guys, this is not a competition to see who guesses and will have a prize. My interest is to solve the issue of my projector. We can discuss everybody. I say thanks now and at the end, at all in the same way. mastertech: My meter have no range for check diodes, only one position and result the test that you ask is "1". I never thought it was a competition. What you do not understand is, you cannot have 2 people giving you different directions as to where to test. I just does not work that way. And you changing random parts along the way does not help either. So I have no problem waiting to see if you 2 find the problem. I know is does not have a diode range, none do. But it reads out with 3 to 4 digits at a time except when open. So is it just 1, or is it .001, or 1.000? And what does it read with probes not touching and when touching. I need to know your meter so when you give a reading I clearly understand what it is telling me. |
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Post by Decibel on Jul 6, 2015 9:06:52 GMT -5
Mastertech I had understand your question, but I must move my weary body  two floors above, where the Cinemax is located. I just re check the SMPS slot with meter as you asked. The meter said "1", without commas or other signs. If touch probes among them, the meter show 003 without commas. If no touch among them, the meter show 1 without commas. |
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Post by mastertech on Jul 6, 2015 10:03:18 GMT -5
I find it odd that you are not getting some reading. Reverse your test leeds and do the test again.
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Post by Decibel on Jul 6, 2015 10:09:45 GMT -5
I find it odd that you are not getting some reading. Reverse your test leeds and do the test again. I'll try tonight. Now I'm in the office. Here it's 5.10 pm |
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Post by Decibel on Jul 7, 2015 2:43:54 GMT -5
I find it odd that you are not getting some reading. Reverse your test leeds and do the test again. I tried again ... I don't know what happened in previous tests, now the meter show a value 1964 edit: Yesterday the meter showed a zero value because the controller tray was pulled.  |
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Post by mastertech on Jul 7, 2015 8:35:36 GMT -5
Ok, same test but disconnect the red probe and touch it to the metal chassis and see if your meter goes to "003" just to verify you are on ground.
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Post by Decibel on Jul 7, 2015 10:38:56 GMT -5
Ok, same test but disconnect the red probe and touch it to the metal chassis and see if your meter goes to "003" just to verify you are on ground. I'm in office now. I can do this test 7 hours from now. If the test will be positive, what must to do after? |
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Post by mastertech on Jul 7, 2015 12:19:35 GMT -5
I just have this and then 2 more tests and we should know exactly where the problem is. Do you have 9 volt batteries over there?
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Post by Decibel on Jul 7, 2015 15:16:52 GMT -5
Yes I have
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Post by mastertech on Jul 7, 2015 15:49:03 GMT -5
Ok, let me know how that other test goes an we can go from there.
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Post by Decibel on Jul 7, 2015 18:15:49 GMT -5
Ok, let me know how that other test goes an we can go from there. Ok with red probe on chassis the meter show 004 value. |
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two floors above, where the Cinemax is located.
