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Broken clip on Mobo (BR drive). Re-soldering the only fix?
Broken clip on Mobo (BR drive). Re-soldering the only fix? –
((SORRY FOR THE LONG POST - THANKS IN ADVANCE FOR ANY HELP))
I recently acquired a broken ps3 with the warranty seal not in tact, which I know through much past suffering and broken dreams, is always a risk. I actually traded some broken stuff he wanted (even), so all in all I didn't pay much for it.
There is a ribbon that connects the BR drive to the motherboard, and clips in place. The clip on the motherboard is broken and the broken part of the clip itself was taped down against the ribbon and the ribbon was also taped down to try to keep it all from moving. I have fooled around with this for 3+ hours and I can get the broken piece to stay in place, and keep the ribbon in place. Let me make this VERY clear...the connection is TIGHT! When the broken clip is placed exactly where it needs to go, I can get it to stay against the ribbon and it does not feel loose at all. I can even tug on it, and it doesn't move. I even tried pressing firmly down on it while booting up the machine, but no dice. I also swapped the ribbon and the power wire (from the mobo to the BR drive) just in case.
The drive will not accept discs. I know this clip/ribbon on the mobo must be the problem because I have put complete BR drives from other systems that I know work, and when plugged into this machine they do not accept discs either.
I suspect that that something inside the entire connector has actually been damaged. I don't know if someone yanked on it, or some of those little pins have stripped, or if the connector itself has actually been partly detached from the motherboard....
It really sucks because this is a valuable backwards compatible system that is completely working, except for this one little clip problem. It burns me to think I may have to scrap it for parts because of one tiny little broken clip (or possible damaged connector).
Any ideas? Does anyone think the ribbon/cip connection may actually need to be tighter then I've been getting it, or does it sound like the connector itself may be beyond hope?
Would I need to get a dead mobo and remove this entire connector and re-solder it to this mobo to fix it? Not that I actually know how to do such things, I just want to know if that is my only option at this point or if there is more troubleshooting to do.
If it's not going to accept the disk at all, take a voltage reading on the power input.
The black wire should be 12.1v, the one on the opposite end should be 5.1v. Le me know if it's correct or not.
I'll try to see if I can borrow my friend's ohm meter, just to be sure. I swapped the power cord/plug that goes from the motherboard to the BR drive from another system I had, and put this one in that one, etc. They both work.
Originally Posted by ReiperX
Most likely it is power problem, even if the big ribbon cable is totally missing, the drive eject/load motors will still turn, make noise, and at least attempt to load a disc.
Being a power problem, most likely one of the power reg. or fuses on the main board going to the drive 4 pin connector is burned or damaged.
This can happen because of either water damage, holding a disc stopping it from loading for a very long time, or putting a screw thru the 4 pin cable (that later is 90% of the cause).
Fixing this would take some time, and I have not been very lucky in doing so, 9 times out of 10, once I find the burned power reg. or fuse, it just blows again.
When you say "putting a screw thru the 4 pin cable (that later is 90% of the cause)" you mean damaging the cable that comes from the motherboard to the br drive and gives it power right? (in layman's terms). I'm pretty sure that's not it because I have swapped that cable from another system and tested this original one in another system and both appear to work fine. I have still yet to test whether or not that cable is actually sending any power with an ohm meter, but I guess when I do I will know for sure right?
Originally Posted by Swollenostrich
The 4 pin power cable pinout
Using black wire as pin one.
1. +12 vdc
4. + 5 vdc
My CECHG also has a broken blu-ray drive ribbon cable connector I used electrical tape to hold it in place.
Without the blu-ray drive ribbon cable attached to the motherboard the drive is not operation, doesn’t load or eject .
Ok, sorry to get back to this thread so late, but I finally used the ohmmeter.
We tested the actual 4 pins that come out of the motherboard. These are the ones that stick up vertically, that plug into the "black gray gray gray" wire that goes into the BR drive. I got a reading of 17+ volts from the one that would plug into the black wire (the one Denbo44 labeled #1) and 7+ volts from the one that would plug into last gray wire (#4). It was always consistent at these readings, and both numbers appear to be right in the range of 40% higher than what they should be.
I also tested a working ps3 with the same ohmmeter, and got the same numbers. Is it just that the ohmmeter's calibration is off or should I be testing the actual contact points at the end of the BR connection side of the wire (other side plugged into the MB of course) and not the pins sticking out of the MB? Would that give me lower numbers?
So does that mean I am back to square one? It appears that the motherboard is giving the BR drive at least as much power as it should, and identical amounts of power that a working Motherboard/BR drive is.
Last edited by Swollenostrich; 09-02-2010 at 05:00 PM.
I recently swapped out the laser assembly in mine and ran in to all sorts of problems, one of which was the disc accepting issue. in my case, it was an alignment problem with the mechanics of the drive. if the cable connector was broken, i would guess that the drive was futzed with and this may be relevant to your situation.
i would take the top off the drive and see if you can get a disc to spin up and read by putting the magnetic hub on it and sliding the rail guide until the laser assembly is raised.
It's not an alignment problem, as I have several drives I have tested. All of these drives in other ps3s have no disc accepting issues, only when these drives are placed into THIS specific system is there an issue. The problem definitely does not lie with the drive(s).
Originally Posted by Bgnome
I think you have eliminated all other possible causes, must be either the motherboard connector or the device on the motherboard which drives the blu-ray interface. Try to replace or repair the motherboard connector.
Originally Posted by Swollenostrich
When you insert a disk into the drive the disk moves a lever which closes a switch which tells the motherboard (via the ribbon cable) a disk has been inserted, the motherboard then tells the drive board to start the motor to pull the disk in, one would think that this operation would be done by the drive board but this is a Sony product so go figure.