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Post by Decibel on Mar 27, 2019 19:42:18 GMT -5
Tomorrow I will see well the circuit.
The ground probe is in a point of chassis.
I use it in previous measurements.
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Post by mastertech on Mar 27, 2019 20:26:51 GMT -5
It is not always good to use chassis for ground. Many circuits use an isolated ground which chassis would then cause incorrect readings. You should always try to use a ground point in the circuit you are testing. I would suggest one of the 2 points in the image below with the red arrow.  |
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Post by Decibel on Mar 28, 2019 3:01:41 GMT -5
It is not always good to use chassis for ground. Many circuits use an isolated ground which chassis would then cause incorrect readings. You should always try to use a ground point in the circuit you are testing. I would suggest one of the 2 points in the image below with the red arrow. Ok |
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Post by Decibel on Mar 28, 2019 16:28:52 GMT -5
Ok, test the voltages in the picture.  Ok below the measurements R253 (+5VP) = +5V R372 (+3,3V) = +3,3V Seems all ok |
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Post by mastertech on Mar 28, 2019 17:04:20 GMT -5
Yes that seems fine. Next I would test the value of resistors: R253,R254 and R372. If they check out ok then I would test dual diode D41. Make absolutely sure there is no reverse leakage.
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Post by Decibel on Mar 28, 2019 17:24:57 GMT -5
Yes that seems fine. Next I would test the value of resistors: R253,R254 and R372. If they check out ok then I would test dual diode D41. Make absolutely sure there is no reverse leakage. The resistors R253; R254 and R372 respond with values report on service manual, respectively 1k 100 and 1.5k. In the pictures below which legs I must use for measure D41?  |
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Post by Decibel on Mar 28, 2019 17:58:57 GMT -5
Stop test!
Fixed issue!
I tried to change address.
I set 0 instead 1 and now the remotes works perfectly.
Thanks for all
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Post by mastertech on Mar 28, 2019 18:01:06 GMT -5
Well that is good news. At least you got some testing experience, lol.
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Post by mastertech on Mar 28, 2019 18:06:15 GMT -5
So this was whiterabb1t board, correct? Now it goes back to him to confirm all is well?
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Post by whiterabb1t on Mar 28, 2019 18:11:49 GMT -5
So this was whiterabb1t board, correct? Now it goes back to him to confirm all is well? Yes correct! 👍 |
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Post by mastertech on Mar 28, 2019 18:31:35 GMT -5
Let us hope all is well now.
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Post by whiterabb1t on Apr 14, 2019 5:11:02 GMT -5
Hi, the problem are apparently solved, but now, i have a new problem, i attach a video
The vertical geometry don’t work, on Decibel projector the convergence/controller tray work! and then I exclude it, i don’t have other vertical board to test...
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Post by Decibel on Apr 14, 2019 7:18:09 GMT -5
Yes before send the tray I checked all geometry regulations and they worked.
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Post by robin36mac on Apr 14, 2019 14:34:39 GMT -5
Hello,
Then if the controller is excluded, it looks like it's the vertical board..
Robin
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Post by gregstv on Apr 15, 2019 2:36:16 GMT -5
Make sure you didn't bend a pin sliding the tray back in.
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