Dear fellow, in short I have come to a problem of the mac pro 3,1 white light no boot. Since I have two mac pro 3,1 it...

Hi, everyone. I have an old White macbook A1181, when it connect to the charger, charger green light turn on, no fan, no...

I have done a lot of try and error, but end up here for the final hope. A month ago, my Pentax 6x7 TTL meter is dead. So I...

Hi, everyone. I have a macbook pro A1278 i5 2.3GHz for sometime, it won't work on a sudden yesterday . So, I take out the...

This is how I finally found out the info. of the burnt capacitors without the board view. This might actually need some luck to find out, as not all the board have the markings on them. The replacement is kind of easy if the have the proper equipment and some practice. " Hot air gun"/"heat gun" will be the equipment you need if you want to perform the repair. Thank you for all of you sharing the information generously, it really help a lot. Update (12/19/2021) (same content in the Question) After more investigation. I have found the Schematics of the 820-1889-A. From the words on the board I look around U7600, and found that there are 4 poly-cased capacitors around. So, I have measured the voltage of the feet of the 4 capacitors , the 2 black capacitors right below the U7600, give about a 12V and the burned two capacitors give around 3~4V. From the Schematics I suspect those might be the C7652 and C7692 (both 150uf 6.3v) as the voltage which received shound not exceed which they can handle. Those route of...