Saw your post saying: "Check the PWM circuit in the unit those along with drive transistorsoften fail in these supplies due to its compact size (they often cheapout with parts) also check duty cycle when it works."
Was wondering if you could run me by how to check the:
1- PWM circuit 2- drive transistors 3- Duty cycle
and were they are. I actually got 3 PS3s off ebay for quiet cheap and planned to repair by replacing and swapping parts that are faulty from the units to at least get one of the 3 running, however, to my misfortune (and this was confirmed) all the MOBOs are the one having the problems. All the HDDs, Blurays, etc.. are perfectly fine as tested and verified by a working MoBo.
Please help me. If i can just verify what on the mohterboard is faulty, i would be so excited to get my hands into replacing the faulty components.
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The power supply circuit is faulty. Generally you have to be good with electronics to do it by yourself. Unplug the tv before opening and servicing! Check the fuse, check the capacitors and replace inflated ones, check the transistor that gets signal from the PWM IC. Check the power to the PWM. Replace the small capacitor that stabilize the voltage of PWM. Replace the optron. If your PWM is burned out, you have to check the entire powering circuit - diodes, resistors etc. and replace all at once with PWM. Only one faulty element will burn down entire circuit again.
If you have adifferent plug for the speed sensor then you probaly have the wrong year model transmission.Even though 93 through 97 look similar they do not interchange.Your speed sensor should be on the passenger side of tail housing,That is the 1995 up design.If you have a trans with the speed sensor on the drivers side of tail housing then you have a 93 to 94 design.93 and 94 were non-pwm units with 5 solenoids.95 was a pwm unit with 6 solenoids with low impediance pwm solenoid.96 and up are pwm units with 6 solenoids and high impediance pwm solenoid.Swapping these units can blow computers.It is probaly stuck in third gear because the fuse is blown or because of open vss circuit.You will not be able to make this transmission work.
code - po1860 tcc pwm solenoid circuit malfunction 4t80- E conditions.5 possible causes 1. tcc solenoid control circuit is open or shorted to ground. 2.tcc solenoid control circuit is shorted to system power b+. 3.tcc solenoid power circuit is open check the trans fuse. 4.tcc solenoid is damaged or has failed. 5.pcm has failed.
Please refer to this link for ways to troubleshoot the hard drive and sometimes if you are lucky you can recover the problem - however if these solutions fail the unit will have to be sent in for repair I am afraid.
I have seen a lot of Toshiba Laptops with bad "DC Connectors" on the motherboard. It sounds like you know what your doing so here a link on how to disassemble your laptop.http://www.irisvista.com/tech/laptops/ToshibaM2/tecra_M2_disassembly_1.htm and here is another on how to repair the dc connector. http://www.laptoprepair101.com/laptop/2006/05/27/failed-laptop-power-jack-workaround/
BUT A NEW POWER SUPPLY OFF OF EBAY !!!!!! IT WILL COST YOU AT MOST 47.98 DO NOT PAY MORE THEN THAT .......!! TRUST ME DO NOT PAY SONY NOTHING 150 DOLLARS IS OUTRAGEOUS WHEN I KNOW FOR A FACT ALL THEY DO IS SWITCH OUT THE POWER SUPPLY UNIT ..THAT IS ALL THEY DO .....!!!!.....I HAD THE SAME PROBLEM ......I WAS PLAYING COD WORLD AT WAR AND THEN OUT OF NOWHERE IT JUST SHUT DOWN COMPLETELY ,..WHEN I TRIED TO TURN IT ON IT SHOWED A GREEN LIGHT FOLLOWED BY AN AMBER LIGHT QUICKLY TURNING TO A FLASHING RED ........I THOUGHT IT WAS AN OVERHEATING ISSUE BUT MY AMBER LIGHT SHOWING INDICATED A HARDWARE ISSUE SO I TOOK A CHANCE AND BOUGHT A POWER SUPPLY UNIT OFF OF EBAY AND RECEIVED IT WITHIN A WEEK .......IT BOOTED UP PERFECTLY FINE TRUST ME ...FOR GET SONY AND TRYING TO DO ALL THAT FANCY TRANSISTOR SWAPPING GEEK TALK BULL......JUST SWAP YOUR POWER SUPPLY UNIT AND THATS IT ...YOUR PS3 IS BACK ONLINE !!!!!!!!!!.....THATS IT BOTTOM LINE !!!!!!.....TAKE MY ADVICE OR LEAVE IT I DON'T CARE BUT I FIGURED I SHARE THIS WITH YOU GUYS SINCE I WENT CRAZY RESEARCHING WHY THIS HAPPENED AND I BASICALLY PUT COMMON SENSE INTO THE EQUATION TOOK A CHANCE AND BAMMMM!!!!! BABY I FIXED IT LOL..LOL...HOW ABOUT THAT ..FOR ALL YOU SO CALLED KNOW IT ALL PEOPLE OUT THER ..LOL..LOL.!!!!!...DAMN GEEKS TURNING THINGS INTO ROCKET SCIENCE ALL THE TIME .....LOL...........EBAY OR ANY OTHER PLACE YOU CAN GET YOUR HANDS ON ONE OK .........THANK ME LATER OK ..LOL.....TAKE CARE ..