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Hi, I'm new here, but have been checking out the forum for a while and everyone here is great. So here's my problem: I'm trying to fix a friend's GK 700RB that intermittently goes in and out of protection mode. It plays fine at low volume, but when its turned up to stage volume it goes into protect. I've read similar threads here and elsewhere that cover some of this, but I have more issues.
-First, does anyone have the schematic? i had it and lost it, and its hard to find.
-Second, I need a replacement for Q26, which is a 2sc3478 NPN. I've looked everywhere, including a link from the gear page: 200V .05A .75W Ecb Nec Transistor TO-92 | NEC | Distributed By MCM. The symbol shows this as a PNP instead of an NPN. Is that a misprint? Also, if I wanted to use a different transistor, which specs do I need/not need with the 2sc3478 that I may find in a replacement or even possible upgrade? What is the purpose/function of Q26?
Sorry for all the questions, but you guys know your stuff and I could use some advice. Also, I've read quite a few posts from Enzo, and that guy is some kind of genius! I'm hoping he'll chime in as well. Thanks everyone.
-First, does anyone have the schematic? i had it and lost it, and its hard to find.
-Second, I need a replacement for Q26, which is a 2sc3478 NPN. I've looked everywhere, including a link from the gear page: 200V .05A .75W Ecb Nec Transistor TO-92 | NEC | Distributed By MCM. The symbol shows this as a PNP instead of an NPN. Is that a misprint? Also, if I wanted to use a different transistor, which specs do I need/not need with the 2sc3478 that I may find in a replacement or even possible upgrade? What is the purpose/function of Q26?
Sorry for all the questions, but you guys know your stuff and I could use some advice. Also, I've read quite a few posts from Enzo, and that guy is some kind of genius! I'm hoping he'll chime in as well. Thanks everyone.
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