Shin EI troubled measurements...ideas ?

[petemoore]

 Shin EI FZ-1
http://fuzzcentral.ssguitar.com/schematics/shineify2schematic.gif
  Sounds kinda phasey, about 98% unity. I managed to find a couple transistors of gains: 289 and 299 from a pack of 15 NPN's from RS.
  Seems like this:
  " >     < " means measured resistance between above and below noted items.
  ---------
  V+ [7.75vdc] yes I know, a little low, I think the box should still boost though.
  >47k<
  Q1C 2.56v
  >2 meg<
  Q1B .76v
  Q1E 0.0V
  ---------
  V+
  >22k<
  Q2 C .76V
  >1meg<
  Q2 B .46v
  Q2E 0.0V

[grapefruit]

From the way it's worded, it looks like you have the 22k and 47k collector resistors swapped...

Other than this, the transistors you are using are fairly high gain by Shin Ei era standards, and this could cause the transistors to be biased on too much - causing the collector voltage to be low.

Or I could be totally wrong and the FY2 is not meant to be biased properly...

Cheers,
Stew.

[petemoore]

  22k on the first transistor C also goes to 100k and V+ at the other end.
  Q2 has a 47k resistor on it.
  The original transistors used were listed as 320 Hfe IIRC from Mark Hammer post I looked up, these are around 300.
  Before that I had the low gainers in there, ~60 hfe Si's...basically same thing.
  Someone wrote the 2n5089's worked good in there too...don't think it's the choice of transistor because the Hfe didn't 'fix' or change it drastically, I tried low and medium, high gain doesn't seem like that applicable, RS doesn't have any though..I'd have to dig 'em out of something or order 'em up.