Hi, my crack have a fuse blown when i changed the preamp tube to sylvania tube. Now the tube top is burn black.
Is it caused by wrong tube? Cause i long time didnt use the stock tube.
I want to do a resistance check again but i only have the manual without speedball upgrade.
I cant get the reading on terminal 7. terminal 9 and terminal 13 reading seems going down instead of up when resistance check.
I also ordered a 0.5A fuse again.
But before I put back on and turn on again. Any advise I should check before doing that? As i dont want to cause another tube to have problem.
Any one have the old version of speedball upgrade manual to share with me, is there a resistance check and voltage check after upgrade to speedball?
