The bias is steady at 1.6v on the bases, no input or output. Did that before I made the video, just took a few minutes. The video was just a "Thanks guys"! Plus, the Ventures should make any day better.

Thanks Ron

Transistors in, bias set, here we go...

https://youtu.be/1fXxGqp0k0o

I like the real deal's as well, but I had some NTE130's, so for testing, they should work until my new order comes in.

Do you use the bushings as well, or just the mica? A real hero had this amp on their bench before me, for sure.

Fixed the short and the rest of the other issues and I'll be ready to test under power with outputs installed tonight I think :-) Question... the 2n3055a's that were installed have no mica insulators or teflon bushings. Is this normal for these amps?? I see no mention of this anywhere in either the ...

Any rubber casters you've used that will work for this model that you'd recommend?

Huh. I removed Q17, Q18, Q27 & Q28 (all the driver transistors) & replaced the power supply diodes - I still have a short

Transformer?

OK... I removed the preamp and driver pcb's and still had a short, so tonight I plan to test the 4 power supply diodes (probably just replace them with 1N4005 600v variants) , then remove the 4 2N3055A output transistors at Q17, Q18, Q27 & Q28 then test again. I figure I need to get the power su...

Most welcome

Got mine from eBay, Amazon has them as well "bourne 15 turn cermet" . I got them from eBay because I didn't have a big enough order for Mouser or Digikey, and MCM electronics doesn't carry them. I used Bourne 3006, which is a 100ohm 15 turn variant. Think it was $7 for 5 of them or close t...

Rob & Ron, in Tony's book, page 24, figure 17

"Replace the wire wound pot with a cermet unit of comparable resistance"

One paragraph up he states "it is therefore highly recommended" to do this. I agree it's overkill, but I figured he had a good reason to put it in there.

Think I also found an error in Tony's book that I haven't seen listed in errata -

Page 54 Q12, Q13, Q22 & Q23 are listed as part# 309687. On page 55 they are crossed but incorrectly identified as part# 309867.

Thanks guys - Im sure its not the bias pots, I replaced those with 15 turn cermets. I'm afraid it's caused from pure boneheadedness :oops: Also, it was on a dim bulb tester, but not even powered on. Basically, when I accidentally applied voltage to the bases of Q15 & Q16, it zapped Q12 Q13 at th...

Well.. Got to the point of setting bias, and instead of measuring voltage I set the meter for a capitance test. I let the smoke out of a few transistors feeling kinda silly.

Ha!

Saw that one, and a few others - there's another guy on youtube who's "converted" a bandshell 1 in similar fashion. It's a different mindset. Some folks want to preserve and care take, and others want instant gratification with little effort. The guy in the video you posted wants a quick b...