PS3 Melted component on CECHA motherboard - advice needed

[Panda of the Triangle]

Hi guys,

I'll cut to the chase at the top here and then the longer backstory will be at the bottom. The Q6010 transistor on my COK-001 (CECHA) motherboard is melted - picture is attached. As a result, the bluray drive will not accept discs (which renders the PS3 unable to play any games). I want to fix it. Does anyone have experience with this? Is the problem limited to this one component (the Q6010 transistor), or is there something else I need to replace to ensure it doesn't immediately happen again when I power on the PS3?

I found on the PS3 dev wiki that TH6002 : is used to protect Q6010 (BD drive power) SI4943BDY-T1-E3 - pin 3 which outputs for +5V_BD. This implies, to me, that another component might have failed for this to happen. I found a diagram of the circuit that shows the transistor is in parallel with two circuits, one of which goes to 12V BD and one to 5V BD. Anyone familiar with the circuitry able to help? Or has anyone dealt with this before?

NSC Modz has a video where he replaces this exact component. Is it really as simple as replacing this one part by grabbing another from a scrap PS3?

Longer background as to how I figured out my problem:

I was recently working on my CECHA. Did a delid of both the GPU and CPU, replaced thermal paste (was AS5 but ended up replacing with grizzly kryonaut, new PSU (APS-231), new fan. Cleaned everything out (no dust anywhere). Everything was working great - played through all of MGS4 again, etc.

Then I smelled burning plastic out of nowhere one night. Shut the PS3 down immediately. Couldn't find a source, despite tearing the entire thing down. When I put it back together, the bluray drive wasn't seeing the disc that was in it. Took the drive apart to reset the mechanisms and retrieve my disc. After that, it wouldn't even take a disc. I thought it might be the laser - replaced it. No dice. Thought it could be the ribbon cable - that didn't work either. Finally replaced the entire drive - still nothing. The connector to the mobo is totally clean and is not damaged, so that isn't it. I was cruising on youtube and found an NSC video where he explains a potential cause of bluray not working at all (not even taking the disc).

I tore my PS3 down to the motherboard again, and sure enough: the corner of the chip in the picture is totally melted. In NSC's video, he salvaged the same chip from a scrap system, put some flux on the board, and heat-gunned the new chip into place. I'll link the vid.

Thanks.

NSC Vid I referenced: View attachment 29895

 

[Panda of the Triangle]

Hey guys,

I ended up desoldering the bad transistor, grabbing one from a broken PS3, and soldering it in place. Used some flux of course.

Just wanted to put this here in case someone else comes across this problem and wants direction.

Peace.

 

[Fanhais]

i have replace this chip but yet i don't get 12v volts can someone give me the diagram of COK-001 where this 12v of Blu ray came form ?
TH6002 area

 

[surferdudemi]

i have replace this chip but yet i don't get 12v volts can someone give me the diagram of COK-001 where this 12v of Blu ray came form ?
TH6002 area

I have also replaced the chip with a substitute from Mouser, with no luck. What you want is the "sony_playstation3_service_manual.pdf" which I found on the gamingdoc.org website (not sure if we're allowed to post entire links). Make sure you get the right one. Looks like they links are crossed. I got the CECHA manual (for COK-001, the one I wanted) from the CECHG link. Page 23 in the PDF is the one you want.

Now I'm wondering if the thermistor (TH6002) between the power rail and the FET switch is bad. There was no apparent damage to the FET chip, but I replaced it anyway to no avail. I don't see a part number for the thermistor though. The replacement part I used for the FET chip is DMP3036SSD-13

 

[iVirtualZero]

I also replaced two of those ic's and the nearby Tantalum capacitors along with the fuse looking thing and the two nearby transistors, and now my PS3 just gives me a solid Red Light with the power and eject button not working.

https://www.psx-place.com/threads/p...ray-drive-isnt-functioning.48292/#post-415417

Update: I found my mistake, the IC near the RSX is an entirely different chip. I put the original chip back in, but my BD Drive is still not recieving power.