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Home Forums SE/30 recap disaster — #4 SE/30 recap disaster — #4
Post #4 by techknight
Source ForumSE/30 recap disaster — #4
CategoryTroubleshooting
Post DateSun, 11 Oct 2015 - 17:31
Original URLhttps://68kmla.org/bb/threads/se-30-recap-disaster.2797/
Post
The other problem is, it looks like you crossed over to near-by traces with the axial caps. If you did, thats bad. one of those two caps has 12V on it. and if you hit a logical 5V bus line with 12v, well.. its the end of the world for that SE/30 board as it will knock out a few chips, but which ones? nobody knows! and will likely never know.... 

Thats assuming worse case scenario. Best case scenario is you simply broke a trace. 

And yes, your soldering iron is WAY TOO hot.... If your using one of those plug in the wall single temp radioshack cheapies, throw it in the garbage and never look back.

Easiest thing to do is warm the board up with a heatgun on low, dont scorch it. Then use a regular ADJUSTABLE soldering station iron and it will come right out with no damage. 

also when you mentioned you lost the metal "sleeve" the capacitor lead sits in, Well you actually pulled the plating out of the board from jerking on it with too much heat, or too little heat and that actually breaks that pins connection to the inner-plane and thats that. dead. You will have to get a known good board and figure out the connection, and meter it against yours, if there's a break, fix it with a patch wire. Thats assuming the plating connected to the inner plane. I cant remember, but thats what happens. 

the 12V also supplies the Sony chips which act as a reset management controller. if you lost the 12V at those chips, the system wont boot. 

mp.ls