Part 2 can be found here: kzitem.info/news/bejne/2qmGv3tth4pzrKwsi=j59D11UxLcwZUFQP
@TheyreStillOutThere
Ай бұрын
Super helpful, thank you. You're the antidote to the crabby/complainy self-important middle aged amp repair KZitemr culture that I'm getting pretty tired of. You and Colleen are making this stuff cool again.
@offkilter
3 ай бұрын
The camera angles and pacing of your walkthroughs are the best on YT. You're killing it
@YeatzeeGuitar
3 ай бұрын
🙏🙏🙏
@DannyDKNYC
3 ай бұрын
This was an excellent video. Just what I was looking for. Great work!!!
@YeatzeeGuitar
3 ай бұрын
Oh good, I'm glad!
@sgt.grinch3299
3 ай бұрын
Thank you.
@jjshouseofjams522
3 ай бұрын
Awesome 🤘
@nbosticiii
3 ай бұрын
Very well done. Thank you. What overhead camera are you using?
@YeatzeeGuitar
3 ай бұрын
Sony A7III. Thanks for watching!
@BCEpedals
3 ай бұрын
The PTx and Those cathode bypass caps are original?? Great video, btw!
@YeatzeeGuitar
3 ай бұрын
Yes sir, replacing all of the filter caps was done in different videos already uploaded to the channel.
@BCEpedals
3 ай бұрын
@@YeatzeeGuitar Nice! That’s a clean amp!
@huddyskiba1
3 ай бұрын
You know I was wondering why you didn’t “strap” the wiper to the other lug of the trim pot so in the rare event of a trim pot failure you wouldn’t lose bias. But after thinking about it, if the trim pot loses its ground reference the bias voltage just goes more negative, right? So it doesn’t really matter if the ground reference is lost, right? Gets a cooler bias, might not sound as good if it dumps to 35% but it won’t hurt anything… Maybe?
@YeatzeeGuitar
3 ай бұрын
You're right, it'd be better to ground that lead along with the wiper in a catastrophic failure event
@nedsheats4600
3 ай бұрын
Since you are improving the circuit why not replace the 100K 1/2 W with a 1 Watt 5% metal film. since it is connected to the HV secondary it is under more stress than most other 1/2 watt resistors in the amp?
@YeatzeeGuitar
3 ай бұрын
I don't swap carbon comps for metal films in all original clean vintage amps like this. This adjustable bias is about the only thing I like to do beyond following vintage spec on these. Ymmv
@BCEpedals
3 ай бұрын
(Not trying to be negative or facetious) ; but That 22k joint opposite the trim pot is definitely a cold joint. You can tell by the solder is formed around, not with, the resistor lead. Being educational, some people might not know the difference or the need to reheat the joint. Just trying to be helpful!
@YeatzeeGuitar
3 ай бұрын
That's caused by the old lead of the resistor being dirty so the solder doesn't want to stick to it as much as clean fresh components, not because it's a cold solder joint. The resistor is crimped around the eyelet with a solid mechanical connection and solder flowed freely across the eyelet. That being said, I knew and as you'll see in Pt 2 releasing shortly today, 22k was never going to be the right value for a usable range in a Princeton so it was always going to get swapped.
@YeatzeeGuitar
3 ай бұрын
My mistake, its already out: kzitem.info/news/bejne/2qmGv3tth4pzrKw
@BCEpedals
3 ай бұрын
@@YeatzeeGuitar right on man! Iron sharpens iron, I think you’re doing a great job!
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