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wooow bad news for me ......lifted L7560 , short still remained and it was on the C7592 side ...... lifted the U7501.... short still remained .... Before I inject voltage i checked the L7430 no short but the L7630 is shorted ... should I inject voltage at all or should I consider the cpu dead ...

Thank you 2informaticos And I just bought a very very used Farnell PDD3502A for 200 :) thinking it is old and maybe has less protection :) I will order the one you recomended . I will do all you told me to do and see what the result will be .... just hope I didnt kill somebodys board just by...

It should be but .... now you will laugh .... as said I am new to this and I have a problem :) My power supply does not want to stay at 1v . I soldered the wires to inject voltage and set it to 1v but as soon as I start it it falls down to 0.14 v and stays there .... no matter what I put on the...

Great John ( it isnt great but I men thanks) I will inject voltage and take out the Flir to see what happens .... It is amazing how from completely working board I managed to get a dead one ..... well I am blond so .... :) Lets just hope I can get it working again or I will in 12 hours have a...

the resistance on PP3v3_S5 is 0.3 ohm

Thanks John the C7505 is 5.03v so I come to the troubleshooting of PP3V3_S5 ... :) I am new to this so bare with me :) am I right that it is created by U7501 ?

Here are some measurements PPBUS_G3H 12.59 v PP3V42_G3H 3.41 v PPVRTC_G3H 3.41 V PP5V_S5 - ? i couldnt find a test point because my boardview and the board itself do not look exactly the same so the pin 18 on J4800 does not look the same on my board. PP3V3_S5 0V PM_BATLOW_L 0v...

Thanks John I will in a couple of minutes here is a photo (the best result I could get of the U7310

Hi 2 informaticos it is hard to explain but it seems like they never have been soldered at all to the board !!! I would take a photo if I just could get the shitty amscope mu300 to play ball with me , I have only a black screen ... not my day they look like brand new and no joints at all (the...

HI John and thanks for your reply yes I have tried with 3 different original (dont use knock offs :) chargers and they are all 85w and same result . It is driving me crazy since the client turned it on and it worked just nice . I just took it out and put it in the new chassie (english is not my...

Hi to all you nice and smart people I just have one question I am working on one 820-00138 and I do not trust completely the brd and pdf I have on it . Long story short it doesnt turn on and upon a close inspection under the scope I found that the u7310 has a lot of pins non soldered that...

ooopsss the other 8 pins didnt fit on the page , here they are 9. 3.3V 10. 1.08 V 11. 2.12 V 12. 5.6 V 13. 5.05 V 14. 5.06 V 15.4.52 V 16. GND

Thank you soooo much 2informaticos , you are an angel. The L8710 has 1.05 V on both sides The values for the U8710 does not seem right though , here they are : 1. 0 V 9. 3.3 V 2. 0 V 10. 1.08 V 3. 3.3 V...

My first post , Hi to all you nice people :) please bare with me I am a total newbie at this . I tried to find similar posts to find a solution but couldnt . I have 4 boards with exactly the same problem , at least the symptoms are exactly the same . No liquid damage and no corrosion whatsoever...