Hello.
I made a own post, because i think its not the same like the other one about 7740g. I hope you can help me.
One day i shut down my Acer 7740G (JV70-CP MB 09293-1), but after a very short time it was off. The next day i tryed to start up nothing happend...
There was no lights on when i put the charging cable (only the light at the cable was on) inside. After pressing power there was no light, no sounds, nothing (the charging cable light was still on while pressing).
Now after a long time i tryed to repair it. So i had some help and dismounted everything.
After this i was looking for the power supply socket but we could messure the 19V behind the power supply socket. There was allthough power at the charging battery cells.
After a long time i found out that i could be the U82 TPS51123. There was a problem with 5v and 3.3v because i just found some spots arround U82 with 3.3V. After i managed to get the U82 TPS51123 changed by a professional stuff. After this we checked if there is light on the mainboard if we put the charging cable into the mainboard, but there was no light on, nothing changed, after pressing power button alltough nothing. We can not find 5V or 3.3V at L35 or L36 and allthough we only found at one Testpoint arround U82 (i think it was TP59 or TP69) a volltage.
Maybe if this is important: 1 Year after i boght this notebook the DVD / Blueray player stoped working (its working on 5V). And i had some problem with the temperatur inside (maybe there is a known problem cause of this heat). But after 1-2 month checking the fan i noticed that the louver were full of dust.... But after removeing the dust the notebook was working fine like 1 year.
So now i hope you know what to do and please tell me step by step what to do.
Have a nice day.
I made a own post, because i think its not the same like the other one about 7740g. I hope you can help me.
One day i shut down my Acer 7740G (JV70-CP MB 09293-1), but after a very short time it was off. The next day i tryed to start up nothing happend...
There was no lights on when i put the charging cable (only the light at the cable was on) inside. After pressing power there was no light, no sounds, nothing (the charging cable light was still on while pressing).
Now after a long time i tryed to repair it. So i had some help and dismounted everything.
After this i was looking for the power supply socket but we could messure the 19V behind the power supply socket. There was allthough power at the charging battery cells.
After a long time i found out that i could be the U82 TPS51123. There was a problem with 5v and 3.3v because i just found some spots arround U82 with 3.3V. After i managed to get the U82 TPS51123 changed by a professional stuff. After this we checked if there is light on the mainboard if we put the charging cable into the mainboard, but there was no light on, nothing changed, after pressing power button alltough nothing. We can not find 5V or 3.3V at L35 or L36 and allthough we only found at one Testpoint arround U82 (i think it was TP59 or TP69) a volltage.
Maybe if this is important: 1 Year after i boght this notebook the DVD / Blueray player stoped working (its working on 5V). And i had some problem with the temperatur inside (maybe there is a known problem cause of this heat). But after 1-2 month checking the fan i noticed that the louver were full of dust.... But after removeing the dust the notebook was working fine like 1 year.
So now i hope you know what to do and please tell me step by step what to do.
Have a nice day.
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