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820-01987 Power Aliases

prodigy83

prodigy83

Member
I am having a difficult time troubleshooting these newer boards. The older boards had the Power Aliases page in the schematics, but these newer boards don't have this. I have been looking at the Power FET's to troubleshoot. Can someone clue me in on what is the best way to look for these Power Aliases?
 
prodigy83

prodigy83

Member
Well I am not neccessarily looking for just one power rail. I just would like to know where I could go on the table of contents to start the troubleshooting process of making sure that the board has power in all the right places. I am already aware of the CD3215/17 wiki, but after that, where do I go. Right now I am working on this board that had liquid damage. It was at 5v at first, but I reflowed both CD3217 chips (used ultrasonic cleaner too) and now the board is at 20v, but I see it pull .45 amps starting out, but goes back down to .03 amps but stays at the 20v. I run in to this often and it was easier for me to troubleshoot the older boards with the Power Aliases page from the table of contents.
 
prodigy83

prodigy83

Member
No I did not even think of that, thank you. Gotta grab the laptop from home. Could you answer my above question from today @ 11:43 AM? Or tell me where I can go to find this out?
 
2informaticos

2informaticos

Administrator
Staff member
You have any secondary power supply in schematic and boardview.
Can check one by one, if needed.
Power On Sequence (POR) available for 01598 and 01055 T2 boards.
 
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