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Post by mastertech on Aug 30, 2018 19:08:46 GMT -5
Test fuse F1. If ok then test resistor R52 (27 ohm)
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Post by you2314 on Aug 30, 2018 20:54:03 GMT -5
both are good output on ic51 is 2.6 volts. i tested d55 and d312 and they are bad
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Post by mastertech on Aug 30, 2018 21:13:30 GMT -5
Where is D12?
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Post by you2314 on Aug 30, 2018 21:15:21 GMT -5
d312 not d12
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Post by mastertech on Aug 30, 2018 21:21:44 GMT -5
Ok, Let me know when you get them replaced.
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Post by you2314 on Sept 7, 2018 19:27:51 GMT -5
got them replaced nothing happened i did notice that the relay did click when the connector was not plugged into the front panel. so it must be something wrong with the front panel
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Post by mastertech on Sept 7, 2018 20:06:47 GMT -5
What is the voltage at pin 4 of cn55?
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Post by you2314 on Sept 8, 2018 16:04:49 GMT -5
-26 volts
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Post by mastertech on Sept 8, 2018 18:14:27 GMT -5
Can you disconnect the cable at CN55 and test between pins 3 and 4 of the connector?
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Post by you2314 on Sept 8, 2018 19:36:38 GMT -5
i got 1.4 volts with it plugged in and 5.6 volts with it unplugged
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Post by mastertech on Sept 8, 2018 20:08:11 GMT -5
Ok, so if you unplug that ribbon cable going to the front display does the voltage at cn55 across pins 3 and 4 come up when that one is plugged in?
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Post by you2314 on Sept 8, 2018 20:12:20 GMT -5
no the hdmi boarrd is not plugged in beacuse it will there is no power going through the transformer
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Post by mastertech on Sept 8, 2018 20:29:00 GMT -5
So let me make sure I understand this correctly. The harness from the power supply (cn55) is connected to the front display board (cn3003). But the harness from the front display (cp3001) to the HDMI board (cn1405) is not connected.
Is this correct?
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Post by you2314 on Sept 8, 2018 20:33:23 GMT -5
yes and the audio and video input boards are not connected
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Post by mastertech on Sept 8, 2018 20:44:41 GMT -5
Ok, good. So then, on that front display board locate REG103 and remove it. Then go check that voltage at cn55 again and see if it came up to normal.
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