[stdule]

If you think that something is short-circuited, then the NOR Tristate with wire connect to GND,if ps3 it will work then the problem is not short-circuit.

[Mr.Dutch]

@JAGULAR1974 , please take some close up pics from the usb area for me (both sides of the board)

more detailled pics means better help.

EDIT:
@playerkp420 do you still follow this thread? , the usb thing might interrest you, or did you allready send that ps3 back.

[baileyscream]

Originally Posted by playerkp420 Not sure what you mean. What ribbon cable? And if I don't have the psu on, how would it get any power? Here is another attempt at some pics. Probably my last, I think I'm gonna ship it back with a "sorry I can't fix it " pics

the ports "look" fine
if you still have it and have a multi meter can you do a continuity test on the 4 pins from both ports.

[playerkp420]

Originally Posted by Mr.Dutch EDIT: @playerkp420 do you still follow this thread? , the usb thing might interrest you, or did you allready send that ps3 back.

Originally Posted by baileyscream the ports "look" fine if you still have it and have a multi meter can you do a continuity test on the 4 pins from both ports.

Yeah, I've still been watching this thread closely.

I actually bought the PS3 for parts. But if I can find a way to fix it, that would be great.
When I have time I will take it apart again, and do the tests.

I have a bunch of PS3s to downgrade first, though.

[JAGULAR1974]

Close ups of usb ports both sides

[baileyscream]

Originally Posted by JAGULAR1974 OK i took apart ps3 to get at usb ports and checked resistance as below and found the following differing results between the 2 ports, as you can see there is a short in the right port as no resistance and coincidently this was the port that was charging the helicopter when the ps3 powered down and would not restart, all the other connections on the ports were similar except for the ones highlighted below. does it seem that the right port is faulty and preventing start up (fingers crossed)

if you touch your probes ends together what is your tester giving as a reading?

just looking at your above pics and with you saying you were charging something via the usb.

can you voltage check the backup battery on the board. i wonder if this has somehow blown

and @Mr.Dutch you click the pick to get a bigger image
(your post after this said the image is too small)

[JAGULAR1974]

when probes touched together i get 000-001 (ohms i think), and yes my son plugged in a mini rc helicopter and after about 5 mins ps3 shutdown and wouldn't restart, checked battery 3.3volts and if i touch on any pairs of contacts shown on the back of usb ports i get resistance except the 1 and last of right hand port in pic i get 000

[baileyscream]

ok i was on pg 5 doing a catch up when i posted.
desolder as @Mr.Dutch has told you countless times the TH3301 then see if it boots.

mr.dutch is asking this so you dont need to de-solder and remove the usb ports.

by doing this you can boot and if it boots propperly then its the ports if it dosent boot then its a fault further along the board.
************* [ - Post Merged - ] *************

Originally Posted by JAGULAR1974 when probes touched together i get 000-001 (ohms i think), and yes my son plugged in a mini rc helicopter and after about 5 mins ps3 shutdown and wouldn't restart, checked battery 3.3volts and if i touch on any pairs of contacts shown on the back of usb ports i get resistance except the 1 and last of right hand port in pic i get 000

right thanks
just wanted to check your multi meter was giving correct readings.

and bat sounds ok shorting wise (it would have been a 0.0v / -0.1v if the bat had blown and was now shorting.

the part i have put in red.
this is +5v and ground shorting on that port.

can you give a good clear shot inside that port (look at playerkp420's pics to see what i mean)

and do the TH3301 removal as mr.dutch has said

[JAGULAR1974]

USB close up

[IMG][/IMG]

[IMG][/IMG]

[IMG][/IMG]

will do the th3301 de solder but not experienced in electronics and this was the type of thing i didnt want to attempt, but problem solve and leave to a pro to do the intricate work

[baileyscream]

Originally Posted by JAGULAR1974 USB close up will do the th3301 de solder but not experienced in electronics and this was the type of thing i didnt want to attempt, but problem solve and leave to a pro to do the intricate work

i carnt see anything in there.

and once the TH3301 has been removed there will be more to do depending on the results of trying to boot.

if your really no good with a soldering iron then i think it will be wrong to get you to try this.

i think its time you sent it for repair.

if you ask for a report of the repair so we can see what the fault was then others can benifit from this

this is unless @Mr.Dutch wants you to try some more first?

i didnt mean to take over from him. just came in to add / help out where i can