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Post by Decibel on Aug 7, 2015 16:30:52 GMT -5
All I see is that the +con and -con are made on the second smps. You have a spare? The diagnostic data show in pictures are made on the SMPS board of my friend. Today I repaired also my SMPS sub board. It have same reactions. No light from tube, ++9v Ok, stand by ok. Tomorrow I'll check the diagnostic data also with my SMPS board. The last note: no reactions or backlit from the built in remote. I power up projector with remote control. |
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Post by mastertech on Aug 7, 2015 21:33:15 GMT -5
Well I guess the first and easy thing to check would be the 2 fuses on the second SMPS + G2 board, 102 and F103.
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Post by Decibel on Aug 8, 2015 0:24:59 GMT -5
Well I guess the first and easy thing to check would be the 2 fuses on the second SMPS + G2 board, 102 and F103. Check F100 F101 F102 F103 No blown. I have two second SMPS+G2 boards and check all fuses, no one are blown. |
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Post by mastertech on Aug 8, 2015 9:50:42 GMT -5
Well I guess the first and easy thing to check would be the 2 fuses on the second SMPS + G2 board, 102 and F103. Check F100 F101 F102 F103 No blown. I have two second SMPS+G2 boards and check all fuses, no one are blown. Have you tested with the (2) other second SMPS's and was the voltage readings exactly the same with them? |
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Post by Decibel on Aug 8, 2015 9:55:28 GMT -5
Not exactly but near values.
Which are the correct values?
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Post by mastertech on Aug 8, 2015 10:08:16 GMT -5
The + and - conv should be the same. The manual does not say what they should be. Maybe someone can look at theirs and post the correct values.
In fact, if someone wants to post or send me a picture of their on screen voltages on a properly running unit I can post it in the manual section.
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Post by Decibel on Aug 8, 2015 10:32:54 GMT -5
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Post by Deleted on Aug 8, 2015 12:42:49 GMT -5
My last screenshot of the voltages:  These voltages are when operating of cause. Do not know what they are in standby. The do not seem to far off from Decibels on data. Except the +con. |
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Post by Decibel on Aug 8, 2015 12:44:10 GMT -5
Thank you for support redfox  |
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Post by mastertech on Aug 8, 2015 14:27:28 GMT -5
Will this projector run without the conv board? If so, then try that and see what you voltages are. I would also verify those 2 conv voltages to make sure you are getting true and correct readings.
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Post by hulio on Aug 8, 2015 14:46:20 GMT -5
Here my voltage readings when projector is on. During standby, it is normal that some numbers are odd.  |
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Post by Decibel on Aug 8, 2015 15:47:56 GMT -5
Thank you Hulio.
So the strange value is +conv.
I can try to disconnect convergence board tomorrow.
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Post by Decibel on Aug 9, 2015 11:40:31 GMT -5
Just found in the convergences output board an apparently burned resistor called SR2. Service manual say R CFFH E1 K 0W7. The meter check a good value like the near SR1 that is same resistor type.  |
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Post by Decibel on Aug 9, 2015 11:50:18 GMT -5
Here the circuit of SR1 and SR2 Seems that the jumpers W1 and W2 exclude the +/-CON circuits. I can try to remove these jumpers but I'm afraid to damage something  |
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Post by hulio on Aug 9, 2015 15:50:03 GMT -5
Yep, that resistor is toasted. SR1 and SR2 are 0,1 Ohm 0,7 W and not so easy to find.
The same resistors with identical values are also used in the convergence boards of most Barco's. Finding a conv. board from a 7, 8 or 9 series projectors is easier than looking for the resistors, i think.
Bypassing SR1 and SR2 with those jumpers is not a good idea, if you ask me. Remember, they are safety resistors and is their job to blow up when overvoltage is presesent. Without them, more expensive components could be damaged.
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