Yamaha B-1 Quickie
- Thread starter rottalpha
- Start date
I was gonna say..
Yes that is the way to go. That is what I did with my unit for the Quickie, albeit, I would not call it a full rebuild.
The next B-1 I will do 'll be my Hot-Rod B-1 with silver front plate. That will be a full rebuild. I plan on eliminating all but two of the relays, by pass all input switches and the rumble filter, new speaker posts, a proper power cord for 1kVA and I even found a good cleaning "solution" for all board edge-connectors
If you're really interested send me a PM.I'll take 4 please
Mr. Yamaha
Not so much Yamaha lately...
This is also a great copy: http://sportsbil.com/yamaha/b-1-om.pdf
Thanks, but I already have the manual. What Vint Age shared is a flier.
vintagejapan
AK Member
I was gonna say..
Yes that is the way to go. That is what I did with my unit for the Quickie, albeit, I would not call it a full rebuild.
The next B-1 I will do 'll be my Hot-Rod B-1 with silver front plate. That will be a full rebuild. I plan on eliminating all but two of the relays, by pass all input switches and the rumble filter, new speaker posts, a proper power cord for 1kVA and I even found a good cleaning "solution" for all board edge-connectors
View attachment 1083015
I came across this site for the board connectors. But will try to clean the original first.
https://www.surplussales.com/ComputerAccess/con_edge.html
Mr. Yamaha
Not so much Yamaha lately...
Yes I know
Let me know if you also want a high-res digital copy of the B-2 flyer (German unfortunately) or the NS-2000 flyer (English).
amr2
Well-Known Member
Do you have it in higher resolution?
amr2
Well-Known Member
I want it!Yes I know
I have the original B-2 flyer in English. I can shareYes I know
amr2
Well-Known Member
Mr. Yamaha
Not so much Yamaha lately...
amr2
Well-Known Member
Yes please.
vintagejapan
AK Member
continued...
View attachment 1064080 View attachment 1064082
here I committed the ultimate sin by a certain someone's standard in terms of replacement components choice....I promise to repent
also...ran out of silver heatsinks so I went to black instead.
View attachment 1064095 View attachment 1064098
View attachment 1064102
on the driver boards I will replace all carbon resistors and ALL caps. I found some of the R&Cs way out of spec. I already started the process.Waiting for parts...
Other changes I did so far was to replace all known trouble maker semis such as the 2sc 458s on the PSU boards and the 2sa810s on the driver boards.
Hi Pete,
What did you use for the 2SA-810 and 2SC1452 on the driver board?
I can see you replaced them.
KSC3503D/KSA1381E (no longer available with same rank)
or
KSC2690AY/KSA1220AY
either would work
The first pair no longer available with same rank
Second pair a bit higher Cob than the originals
Either would work and be more reliable that the original
These are TO-126 devices so watch the heigth. Also know that I have a patent on those heatsinks. Can't use the same kind without special permissinon
your only choice is to go with a la Amp8 version
or
KSC2690AY/KSA1220AY
either would work
The first pair no longer available with same rank
Second pair a bit higher Cob than the originals
Either would work and be more reliable that the original
These are TO-126 devices so watch the heigth. Also know that I have a patent on those heatsinks. Can't use the same kind without special permissinon
your only choice is to go with a la Amp8 version
Last edited:
will scan it for yaMy German is not so great, so yes please
vintagejapan
AK Member
KSC3503D/KSA1381E (no longer available with same rank)
or
KSC2690AY/KSA1220AY
either would work
The first pair no longer available with same rank
Second pair a bit higher Cob than the originals
Either would be work and be more reliable that the original
These are TO-126 devices so watch the heigth. Also know that I have a patent on those heatsinks. Can't use the same kind without special permissinon
your only choice is to go with a la Amp8 version
View attachment 1085449
Fantastic,
Cheers.
Those are nice heatsinks
What will special permission cost me?
makes a good Sunday afternoon read,This "quickie" is becoming a "long read"
or if you were to rebuild your B-1, this probably has more info than other places on the net....
I had a hard time finding info on B-1 rebuilds when I decideed to take on the "quickie"
I am thinking maybe you could find out for us if those C rank SK180s of yours need further matchingFantastic,
Cheers.
Those are nice heatsinks
In the meantime, "technical" details of my patented heatsinks are somewhere on the first page of this thread, in my response to Bratwurst.