i have the DiyTube rev D board; i have it apart to replace the el84 cathode resistors (r17, r20, r23, r26)which i smoked pretty good a long time ago trying 6n1p tubes.
the amp still functions but the crispy look has been bothering me. oddly enough, the worst looking one, which is black and swollen, is bang on(471r)....
while i'm at it i guess i'll do the neighbors too, r18, 21, 24, 27. the xicon caps c5 and c8 look a little bulged on top so i think i'll replace those too, and their adjacent brothers
question: what material should the resistors be? metal film? oxide...? also would different caps be worth playing with or should i stick with the xicons?
anything else i should replace whaile i'm in there? the parts were from the Triode Electronics kit from '08 and they are all pretty decent i think....
also anyone know where i could find another new Rev D board?
all input appreciated