English Amiga Board - View Single Post - A600 Caps lock led stuck on at boot solution

jarp · 17 April 2016, 23:17

Thanks thanks thanks! I made an mistake and recapped whole board without testing it between every few caps. Black screen. I was so mad. I even started to resolder some surrounding parts (including that 555) thinking I made an mistake with hot air and blew some component off a bit or something. Then found this thread, removed that very cap and wham, works. Resoldered the same cap back with ridiculous amount of flux and still works.

Dont know why though, I went through every cap with multimeter and checked against short circuits and found none. Cold joint would do the same than no cap at all. Weird. But that cap had leaked a lot, perhaps it was enough when I re-cleaned the area when I redid it.

Btw. Almost every single cap had leaked... Rev1 board. Neutralized stains with vinegear and washed with IPA.

So thanks, without this thread I would still be resoldering stuff.

17 April 2016, 23:17	#65
jarp Registered User Join Date: Apr 2016 Location: Helsinki / Finland Posts: 176	Thanks thanks thanks! I made an mistake and recapped whole board without testing it between every few caps. Black screen. I was so mad. I even started to resolder some surrounding parts (including that 555) thinking I made an mistake with hot air and blew some component off a bit or something. Then found this thread, removed that very cap and wham, works. Resoldered the same cap back with ridiculous amount of flux and still works. Dont know why though, I went through every cap with multimeter and checked against short circuits and found none. Cold joint would do the same than no cap at all. Weird. But that cap had leaked a lot, perhaps it was enough when I re-cleaned the area when I redid it. Btw. Almost every single cap had leaked... Rev1 board. Neutralized stains with vinegear and washed with IPA. So thanks, without this thread I would still be resoldering stuff.