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Post by crudeau on Dec 18, 2013 21:48:11 GMT -5
16 is 4.77
15 is .56 and 4.20. Slowly climbing but it's pulsing
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Post by mastertech on Dec 18, 2013 21:53:31 GMT -5
Good, now go back to pin 16 and put your probe there so you have the 4.77
Then press and hold the on/standby button.
the voltage should go to zero while holding the button in. Does it?
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Post by crudeau on Dec 18, 2013 22:02:36 GMT -5
Yes goes to zero while holding standbye
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Post by crudeau on Dec 18, 2013 23:09:37 GMT -5
So what is the pulsing 15 mean.
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Post by mastertech on Dec 19, 2013 12:05:28 GMT -5
The pulsing 15 is the line for the blinking red standby LED. Just wanted to be sure your were testing correctly, LOL.
Ok, next test do not plug in receiver. Set DMM to diode test. Leave ground on pin 22. Pos probe test pin 10 of CY124, the one you just tested voltages on. Post the complete reading.
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Post by crudeau on Dec 19, 2013 12:19:19 GMT -5
Lol. .052
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Post by mastertech on Dec 19, 2013 12:34:33 GMT -5
Ah ha. Not good. Disconnect the harness from CY124 and do the test again on the pin in the connector on the board.
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Post by crudeau on Dec 19, 2013 12:37:44 GMT -5
Same
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Post by crudeau on Dec 19, 2013 12:38:58 GMT -5
Not good? I would think good if your finding something. Lol
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Post by mastertech on Dec 19, 2013 12:47:14 GMT -5
No, not good because pin 10 is a power line and that low of a reading, close to short when testing to ground means that power line is being shorted out and why we are not reading a voltage where we should be, on that protection circuit.
Ok, now you will need both probes for testing so unhook from that pin 22. Leave CY124 disconnected.
Receiver NOT plugged in, DMM on diode scale.
Go to that small transistor on this board where you tested before, TR111. Randomly test between different legs and see if you get a low reading on all 3 legs or just 2.
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Post by crudeau on Dec 19, 2013 12:58:43 GMT -5
Negative on single left pin I get .920 on top right. .971 on bottom right
Negative probe on bottom right pin. I got no reading with positive on single left pin. And .052 on top right
Negative probe on top right. No reading on left side and .053 on bottom right
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Post by mastertech on Dec 19, 2013 13:08:10 GMT -5
Ok, I need you to remove that transistor. Are you able to without damaging the board? Need some tips?
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Post by crudeau on Dec 19, 2013 13:20:31 GMT -5
I think I can get it off. But what tips you got?
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Post by mastertech on Dec 19, 2013 13:33:47 GMT -5
I usually use 2 soldering irons at the same time on each side. If you only have one, then I would get an exacto knife and while heating the side with the single pin and lift the transistor slightly which will bend the other 2 pins. But just lift enough to detach the 1 pin, dont bend real high. Then heat the other 2 pins and lift with the knife until it comes off. Just try not to damage the trace.
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Post by crudeau on Dec 19, 2013 13:34:30 GMT -5
It's off. No trace damage
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