Search results

edit

what do you mean with "5v side" side of what? u7700? u7700 is solderet perfectly... i confirm i have 3,3 on l7710

i've dismantled the motherboard for the first time, changed u7700 with a brand new..now i have this voltage 12, 5, 5, 5 3,3 3,9 on l7750 i have 0v on both sides 0.144 mv in diode mode

https://www.ebay.it/itm/265116579805?hash=item3dba2df7dd:g:114AAOSwB4FgVMYW&amdata=enc%3AAQAIAAAA4EL%2FgOqR2GFjCd%2FRzK8h%2Bfg8pFQ1fIem3n19XnjNVRy0l68kQsrVpNYkSOh%2BC4ZR7qiR24FB%2FReBSzWv%2BzjGVsvqgMBxcx7j1xUg4d%2FsXXEy3upulgvlWKyVeRZ%2Baojl9PpW5uHbEws6lzOAEzTjs8R24No1ka9wqNlv4gjImww6KQumre9VYXjN...

Yes but not with a brand new…i can try to buy a brand new one…what do you Think?

Still the same I have 0,144mv on pin 23 of u7770

12, 5, 5, 5 3,9 5

I have not dismantled the motherboard from the case, so it is still connected to its power supply! It doesn bot boot without battery

I’ve 0v on p5vs3_reg_phase

I have 5v and 3,3 on u7700: should i change it anyway?

without checking anything else like you teach me?! ok i will replace it

so what should i check? this is the first time for me...

So it should be 820-2641-a

No history 🥲🥲 Should I diamantle the mktherboard to check for the model?

HI!, i've never fix an imac. this imac doesnt power on. i've only the first led when i push the power button, nothing happens power button is ok could you help me? i don't know where to start! thanks

i have taken the reading with the charger connected to the corrisponding port... i have oscope but i'm not able to use it... so i have a board 820-00840....with same mosfet...q3100 and q3200...so i could change 2 mosfet what do you think

please 2informaticos...i'm going crazy.... i'm sure at 100% that all cd3215c00 are ok... all resistors around are ok! only one port goes to 20v.... i don't know what else to do... Diode readings of u2890 is the same of ub090 on u2890 (port xa, the only one working) i have PIN 1/2/3 3,3v...

edit

reprogrammed ub090 with no luck... about q3200....could i take a similar one from a donor board?

how can i program ub090? could i use minipro tl866? where can i find a dump?