Great vids thank you for your clean presentations. Do u have a reference or cheat sheet for why u rated thos ohm readings acceptable vs their capacitance ratings? becuz yes i too dont want to take them out. Lol. Ty again. Im not doubting u i just dont have ur knowledge.
I very much enjoyed theGFA-555 videos. I happen to have one on my bench right now - apologize in advance for all the questions: One side has 8 vdc offset at the speaker terminals (on dim bulb) I suspect a bad output transistor on that side. I believe it is an 2SB554 and will pull/test them all (any tips on procedure?) I'm curious how you would approach replacing one bad output transistor on a unit like this (assuming it's just one) If I can locate a replacement 2sB554, is it ok to replace just one transistor at a time?
HFE is the gain or amplification of the transistor, in a multiple transistor amplifier stage you don't want one transistor to have too much or too little gain in respect to the other transistor(s), so they will be balanced and share the load equally.
