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Post by mastertech on Dec 16, 2016 18:49:48 GMT -5
Did you hear the buzzing noise or was this all using the good projector?
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Post by jeremy on Dec 16, 2016 22:28:50 GMT -5
Nope, no buzzing noise, and this was using the good PS in the "bad" PJ
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Post by jeremy on Dec 16, 2016 22:29:25 GMT -5
Wow this tab crashed and it didnt post my reply that happened an hour ago...but yeah, thats the scoop lol
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Post by mastertech on Dec 16, 2016 22:35:11 GMT -5
Nope, no buzzing noise, and this was using the good PS in the "bad" PJ Which ballast was in the good PS? |
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Post by jeremy on Dec 16, 2016 22:40:29 GMT -5
The ballast that came with the projector we're working on (the "bad PJ ballast")
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Post by jeremy on Dec 16, 2016 22:41:17 GMT -5
The good PJ I have like this is brand new, so I'm trying not to use anything out of it that I don't have to  |
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Post by mastertech on Dec 16, 2016 23:04:02 GMT -5
Ok, good. Just wanted to verify the PS was definitely what was buzzing.
I guess now we know what we needed to so put the bad PS back in and test the voltage at that resistor and see if it falls and what it falls to. I would also like you to recheck all the voltages on the connector to be sure they are all right where they should be.
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Post by jeremy on Dec 16, 2016 23:06:21 GMT -5
Will do and report back what I find |
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Post by mastertech on Dec 16, 2016 23:23:53 GMT -5
Oh, check the part number on that ic202 on the good board if you can and see if it is the same.
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Post by jeremy on Dec 17, 2016 1:21:05 GMT -5
Well MT we have a slight problem, R214 on the bad PS popped off when I went to put the test wire back on it, and to make matters worse, one of R214s ends came off too, so the resistor cannot be tested for its rating...
R213 which is right next to it is 1.2K, I don;t know if R214 is the same or not, but these are so small they are no numbers on them. I'll throw another 1.2k in place of the bad R214 and do what you asked and see what I find out.
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Post by jeremy on Dec 17, 2016 1:35:21 GMT -5
Found an identical replacement for R214  Can resume repair  |
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Post by jeremy on Dec 17, 2016 2:46:54 GMT -5
Okay, got all that sorted out there, anyway...
Results of testing the + voltage on R214, when in standby its at 4v, when powered on it drops to about 3.6, when the lamp lights up it drops to 2.9, it made it down to 2.8 and then the projector shut down and went back into standby.
I'll check the pin voltages in the AM
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Post by mastertech on Dec 17, 2016 13:45:16 GMT -5
I am surprised it shut down. IC202 is still out, right?
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Post by jeremy on Dec 17, 2016 14:32:07 GMT -5
Yep IC202 is sitting on my DMM display at the moment |
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Post by mastertech on Dec 17, 2016 14:44:53 GMT -5
Does it shut down every time or does it sometimes run for awhile?
Do the fans run for the cool down sequence when it does shut down?
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Can resume repair 
