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US7IGN's latest activity
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US7IGN replied to the thread Yamaha B-2 restoration.I'll still replace them all together with the transistors and some of the resistors for complete identity. -
The board with the brown film caps belongs to the unit. The board with the orange film caps belongs to a much earlier unit. I replace...
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US7IGN replied to the thread Yamaha B-2 restoration.Thank you! The S/N is 10457. With the exception of those capacitors, everything else is completely identical.
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US7IGN replied to the thread Yamaha B-2 restoration.I started working on the black one and sorted out the V-FETs first. While working on the driver boards, I discovered that they used...
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Check the transistor voltages in the section below, especially Tr623e and Tr621c, if you’re comfortable doing so. Something might have...
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US7IGN replied to the thread Yamaha B2 - a different way of a comprehensive rebuild.Unless this is a big troll or copying unavailable boards, I don't see the point in spending so much time just copying a ready-made...
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US7IGN reacted to rottalpha's post in the thread Yamaha B2 - a different way of a comprehensive rebuild with
Like.
There are different ways you could have approach this conversation and maybe half-dozen ways to accomplish the actual redesign of the... -
US7IGN reacted to Nashou66's post in the thread Yamaha B2 - a different way of a comprehensive rebuild with Like.
Yeah I was going to comment when the thread came up it looked almost exactly the same. Not sure if there is another way that board could...
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US7IGN reacted to Alonia's post in the thread Yamaha B2 - a different way of a comprehensive rebuild with Like.
Hello everyone, After following @rottalpha 's excellent Yamaha B-2 rebuild thread here on AK for quite a while, I finally decided to...
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Hi everyone! I found these blue extra capacitors that couldn't have been installed at the factory. Why would anyone do this? Original...
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US7IGN reacted to rottalpha's post in the thread Yamaha B2 - the "why" and the "how" of a comprehensive rebuild with Like.
I started the 8650 project but had to set it aside for lack of time. Family and my real job leave little time for my hobby.
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US7IGN replied to the thread Yamaha B-2 restoration.Thank you! This wouldn't have been possible without your products and advice. To be honest, this isn't my first project involving V-FET...
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Congrats! I am super happy to hear the success story of resurrecting another v-fet amp. Silver ones are rare. here is my silver Yamaha set:
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US7IGN reacted to rottalpha's post in the thread Yamaha B2 - the "why" and the "how" of a comprehensive rebuild with Like.
Congrats! it is a gorgeous amplifier. The real "music to my ears" is hearing how you and your friend saved all those v-fet amps.
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US7IGN reacted to rottalpha's post in the thread Yamaha B2 - the "why" and the "how" of a comprehensive rebuild with Like.
Moving the VU meter lighting discussion here. As discussed elsewhere, I am happy with improving the lighting for the VU meters using...
