emisadis
Newbie
Posts: 7
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« on: August 08, 2012, 11:28:35 AM » |
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Hi there, my story is simple.
I had to reflash a liteon 74850C for a friend.
First of all i've tryed the mra but i doesn't worked so i have repaired all the lines.
Then i build up a probe to extract the key , when i was extracting the key on JF accidentally my noodle touched mpx03 with mpx01, and failed the extraction (also my xbox started to blink on power led). Tried again and it was success. i flashed before to stock then LT.
But the fact is that , it seems to be dead , laser doesn't power up, tray also. I've noticed only a little sound when i touch the eject button.
My southbridge is ok, all the voltages on the connector are ok. I have also tested all the 0 R , and the transistor (near r707,r708) gave me 1,81 (middle pin) 5 v (third pin) 1,81 (upper pin).
I can flash it in a couple of minutes but it doesn't move at all.
My Mt chip gets hot but not soo much.
i've also noticed that the power led on the xbox blinks when i hit the eject button and hold like this, also sometimes when i push the button the console restarts itself. So there must be a short somewhere on the dvd pcb. I've searched all over internet to find some infos about mpx03 but nothing.
Thanks to everyone
Ps if needed i can post pics.
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iateshaggy
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« Reply #1 on: August 09, 2012, 06:02:19 AM » |
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hi res pic of both sides are needed, turn the flash off and use external lighting.
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emisadis
Newbie
Posts: 7
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« Reply #3 on: August 10, 2012, 11:17:08 PM » |
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Just asking, no one knows something about mpx03? if i could know where is related to...
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iateshaggy
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« Reply #4 on: August 11, 2012, 04:30:55 AM » |
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check the following for continuity. if it doesn't have it, it needs it.  |
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emisadis
Newbie
Posts: 7
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« Reply #5 on: August 11, 2012, 04:34:09 AM » |
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Thanks for the fast response, anyway it does have continuity
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iateshaggy
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« Reply #6 on: August 11, 2012, 04:59:14 AM » |
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i see it now, tiny blob of solder that i circled. it could be shorting those traces out.  |
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emisadis
Newbie
Posts: 7
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« Reply #7 on: August 11, 2012, 05:04:02 AM » |
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unfortunately not, i've checked the resistance of the lead near right, is above 900 . mm i have no really idea.. If only we could have a wiring diagram..
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iateshaggy
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« Reply #8 on: August 11, 2012, 10:13:53 AM » |
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did you remove that solder that i circled yet?
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emisadis
Newbie
Posts: 7
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« Reply #9 on: August 11, 2012, 12:20:13 PM » |
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yes, also cleaned with isopropyl alcohol 99%
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iateshaggy
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« Reply #10 on: August 11, 2012, 01:37:54 PM » |
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ok, new pics time.
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emisadis
Newbie
Posts: 7
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« Reply #11 on: August 13, 2012, 07:39:09 AM » |
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which zone in particular? thank you
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iateshaggy
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« Reply #12 on: August 13, 2012, 05:39:57 PM » |
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the part where u removed that blob of solder i circled.
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