[JAGULAR1974]

trying to enlarge pic

[Mr.Dutch]

Originally Posted by JAGULAR1974 trying to enlarge pic

re-read my latest post.

[JAGULAR1974]

yeah not an electronics kinda guy so found hard to follow schematic
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as a noob maybe if someone could highlight in these images it will probably help


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and this one

[Mr.Dutch]

Originally Posted by JAGULAR1974 yeah not an electronics kinda guy so found hard to follow schematic ************* [ - Post Merged - ] ************* as a noob maybe if someone could highlight in these images it will probably help

it would more help if you take close ups from the usb area, both sides of the board...

i will edit my post if i have some usefull tips.

EDIT: @JAGULAR1974 , ok new picture, still i have not enough detailled pics to judge everything.

first measure again both ports if you not made a mistake, then closely examine the faulty port if there isnt a short somewhere.

i can't locate the part i marked in the earlier image, it may look different on your board. ( i added the part for a sem board in the image, it looks like a transistor)

i also marked the TH3301, it's the same number as in my diagram i posted from the semboard, so it's the same thermal resistor.
desoldering it from the board would unload the 2 usb ports.

jsd-001

[JAGULAR1974]

well looked inside usb ports cant see anything obviously touching and shorting also checked continuity where you suggested and got the values you recommended and was exactly what you advised

[Mr.Dutch]

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)

Originally Posted by baileyscream when i did the rear usb mod i had the same thing happen when i shorted then by mistake. so i'm wondering if the pins inside have moved across or sunk back and are shorting

@baileyscream , your post crossed my mind when he mentioned the usb short.
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Originally Posted by JAGULAR1974 well looked inside usb ports cant see anything obviously touching and shorting also checked continuity where you suggested and got the values you recommended and was exactly what you advised

lol, it was not what i advised, did you still get the 1 ohm reading on that port?

[JAGULAR1974]

yes 1 ohm on the one and 1k on the other
i think this is all getting above my head i'll probably send it for repair if anyone know's someone to recommend i would be very grateful with no expectation of repair, I wouldn't expect repair but seeing as i'm not able to follow schematics or locate wiring problems i think i should send it to someone a lot more pro than me.

[Mr.Dutch]

Originally Posted by JAGULAR1974 yes 1 ohm on the one and 1k on the other

so you actually do have a short on that port, did you looked into the port to see if there was something wrong?

the problem is if you want to find out where the short is you have to or see what is wrong, or desolder maybe 2 parts from the mainboard, to locate the problem.

[JAGULAR1974]

i looked inside the port and they both seem the same nothing seems to be touching, can the outer casing of the port be disassembled to get better look

[Mr.Dutch]

@JAGULAR1974 , don't think so.

did you considered to desolder TH3301, it will unload the usb ports (they will get no voltage whatsoever, and you can try how the ps3 reacts to it.