ok, after solving my core module power problems i built the sid and to be able to test it i built the optimized c64 psu circuit on a piece of perfboard (though the way i soldered all that i might just as well have gone point-to-point… :
) but guess what! more psu problems! at the 5V pin i measured 5.23V (after getting 0V until i found a bad solder) but at the 14V pin i get a whopping 17V and the 7809 (and it *is* a 7809 not a 7812) is getting pretty warm pretty fast for there being practically no load… between pin 2 and ground i get 5V (as there should be) and between pin 2 and 3 of the 7809 i get 12V (not what there should be, this should be 9V)
Hi,
did you check the pin orientation? Maybe you’ve swapped the pins?
Best Regards, Thorsten.
looks at board
looks at schematic
looks at board
slaps head :-[
I hate desoldering… (edit:) because it never works…