just for the record, a slim DOES show a yellow light and i believe its on every occurance a fat model would show one. bad hardware ect.
your ps3 is either bad psu or components on the mobo are bad, like fuses ect. the ps3 is designed with all kinds of security features to save itself from getting power surged. but when one of these security features goes bad, it could be hell to find or replace. if it isnt a bad psu, you prob are better of just to buy another motherboard from ebay that works. you can buy a mobo for 120 bucks or less. you will have to send that mobo you got... off to be repaired which could cost more than 120 bucks. best thing imho would be to sell it for parts and buy another working mobo.
just to update this post, it can also be a southbridge problem. the southbridge chip is soldered on the board just like the cell and rsx. if these solder balls go bad then you more than likely will get bad grounding ect. and if you think about it, a pc psu, if its not getting good or proper ground, it will shut itself off. i would venture to say a ps3 psu is prob the same. what you could try to do is reflow or reball the southbridge chip.
i have a cech3001A model that is doing this and i will be trying this very soon. i also tried the experimental patch to try to install cfw on a 3000 model ps3, and got the exact same symptoms (power off no standby in 3-5 secs) so it could be bad flash contents or hardware. you can do a led diag test, tho its not properly researched and noone really knows what the led patterns mean, but you can still document it.
the one i think has a bad southbridge had this led lattern:
g = green
r = red
has 4 sequences of 4 , then yellow light will signify the sequence is over and it will repeat.
g g r r / g g g g / g g r r / g r g g (end)
here is how to get it to do the led diag
quoted from wiki
I have found what I think is a diag mode that displays error codes using the power button light, kind of like what an OBD-1 ECU on a car would do. To activate it you have to do a fan test and wait until after the ps3 powers off(this much I am sure of) then you have to press eject and then power rapidly many times in succession also try holding eject and pressing power. Once you enter this mode the power light will flash yellow for about 1 second then the status of 4 component's(which ones I don't know) within the ps3 will be displayed by the power light blinking 4 times for each 4 component's. Then the yellow light blinks again letting you know the cycle has started again.
Hi i am new to the psx-scene. But have been repairing consoles and electronics for a few years now. I have found out this issue on one 3001b console. I have experimented and if i put direct pressure down on metal cage above the cmos battery, the console plays fine and well until i release pressure as then it shuts back off in the same fashion as before. Hope this helps i am goind to do some further testing. Will post back with any new results.
Just in case try to change the thermal past, CPU/GPU, before saying its a PSU problem
Hey guys just letting you know this a very common issue for the PS3 Slim 250x model (2502 for us here in Australia)... We've seen this now over 20 times.. The symptoms are always the same, the console turns usually for a brief period but generally only for a few seconds before the machine completely powers off. There is no light whatsoever, and to get back to a red standby light you must wait a few seconds and press the power button again. The problem seems alot like the PSU related issues of the CECH-200X but don't seem related.
Thins we have tried to no avail..
*Reflowing the GPU / CPU
*Replacing the PSU with the correct, working Power Supply (there are various version APS250, AP270, APS306 and even a fourth type EABD i believe (i had one here, but ive seen to have lost it)
*Testing all fuses, check PS3 Wiki for Motherboard fuse locations. Most the boards effected seem to be the JSD/JTP-001 motherboards
*Pushing down around the CMOS battery
Things still to try
*Reflowing the south bridge controller
Lets try to work out this issue, there are a stack of threads on this forum with no fix to this problem and its been around now for well over a year.
My playstation kept shutting down aswell but i think the blazing heat had more to do with it
Reflowed the southbridge. no results.
Voided warranty: Its interesting that the only fuse on the top of the board is right next to the CMOS batttery. Fuse tests okay though on every board though.
Mod Xpress - Can you advise if you've had any success in resolving the issue ?
I have a PS3 Slim 2503B which does exactly as described in the original post. I've grounded out the Tri-state and the console stays on, this is leaning me towards the issue being a corrupt firmware perhaps rather than a hardware issue?
I have the same issue.
my PS3 runs for maybe 30 mins sometimes 10mins. then powers off and I have to disconnect and reconnect the power cable.
I have tried applying some extra thermal paste as the paste wasnt spread all over the chip from factory and now it has and only used the smallest amount of thermal paste possible to entirely cover both processors.
Not sure what the fault is myself.
Wondered if it was a temperature thing so bought a little cable with pot that forces the fan to spin extremely fast when running to make sure not a cooling issue and this did not solve it.
I have got hold of another ps3 with Mobo and PSU will check these have same model number and maybe see what happens using those parts.
If I can test anything or compare anything let me know and ill try share some extra details to solve these damn issues.
Well just chucked in the other psu and powers up slightly different amp psu but powers up. I will reply and see if it powers off like the other one. although this could just be as nackered as the other psu. lol
Seems that the PSU heats up quite fast and the PSU area near HDMI port gets reasonably warm so far.
will let it run and update very soon.