It's so EASY to repair: Yamaha CR 450

[@Shuksanaudio]

This CR-450 is now for sale on my eBay www.ebay.com/itm/387155095617 I will be starting a series of deep dives on certain aspects of repairing vintage gear, what would you like to hear about? Thanks so much for watching!

[@rafacq]

@@Shuksanaudio OMG. Its already sold!

[@rafacq]

It sold very fast!

[@sethpennel3830]

This was the most well thought and executed video to learn from thank you and keep them coming

[@Shuksanaudio]

I'm glad it was helpful! More videos are definitely on the way.

[@Daltondoubledeuce]

Excellent work Matt. Just picked up a Yamaha CR-820! Super excited to work on it.

[@Shuksanaudio]

Thank you! That's super exciting! The CR-820 is a great unit. I hope it goes well!

[@killer257296]

I just restored one of these, all the caps, i replaced all the output transistors, all high failure transistors and it is my favorite sounding reciver ive ever heard, looking forward to finding this thing a new owner thst will appreciate it.

[@Shuksanaudio]

Nice! That's amazing! They sure are great units. Thanks for watching!

[@daniellee7178]

Recently got a 450 for $85 and just needed its controls cleaned. Sounds fantastic with my kef q150s!

[@Shuksanaudio]

Ohh that's a steal! I bet it powers them nicely! Thanks for watching :)

[@TheyreStillOutThere]

The Peak DCA pays for itself immediately in time saved, I fucking love mine and use it literally every day. It’s a godsend

[@Shuksanaudio]

They're so nice! Very convenient. Thanks for watching!

[@edley312]

Awesome analytical approach to the restoration. Hope you'll make a video when you sort out my Yamaha CA-800!

[@Shuksanaudio]

Thanks, Edley! I will make a video about it. Might be a shorter one as I'm a bit swamped with work and these longer videos take a long time to put together. I'm looking forward to getting to yours though!

[@Konrad_K.]

I swear on removing the blue filters and putting in the original light bulbs, looks real good and much brighter

[@Shuksanaudio]

That's a good idea! I like the green filter sometimes but the warm light sure is nice.

[@jimcabezola3051]

I hope you enjoyed listening to Merle Haggard...and all kinds of other music...on this machine before you let it go. Me? I'd have a hard time letting this beauty go! Mahalo for a very clear and educational video. Much aloha to you!

[@Shuksanaudio]

I have been jamming it a lot! Really love the way it sounds. I've been listening to a lot of Merle Haggard and other Bakersfield artists lately. Really enjoy it! Yes this is a hard one to let go of. Moving through gear quickly has it's fun sides though. A new amp in the living room every week is fun haha. Looking forward to getting to more of my personal projects later this year that I won't be listing for sale! Mahalo, Jim!

[@jimcabezola3051]

@@Shuksanaudio Ah! The "Bakersfield Sound" is awesome. I went a bit too far with it a couple of times: I listened to that achingly soulful music...on my car stereo...during road trips in and around Bakersfield. I tried to drown myself in it.🤣🤣 Aloha!

[@Silent-Lucidity]

Hi Sir, I saw your ad for the CR-620. I have that coming to my workbench in a few weeks and wondered if I can get the replacement component list from you?

[@Shuksanaudio]

Hey there, I replied to your comment on Facebook I believe. I do not have a parts list as I keep many parts in stock and can pull and replace each component. I did give some tips on transistor replacement though! These are my tips for the CR 620: "Replace all of the darker blue Taicon capacitors. They're almost always 50%+ out of spec. If yours is not made in Japan, almost all of the caps will be Taicon. The preamp is always full of bad caps and transistors. Replace them all. You will need a dozen KSA1015 to replace the 2SA844 and a few toshiba TTA004 and TTB004 in the amplifier. The 1S1885 diodes in the power supply and protect circuit can be replaced with 1N4002. You’ll also need a couple of 1N4148. There are lots of great threads on recapping the 620 on audiokarma."

[@johnclintonmusicandmore]

Another great video, Matt. I’ll be sending you an email soon.

[@Shuksanaudio]

Why thank you! I look forward to hearing from you :)

[@johnnewcomb5162]

I just bought one of these for 25 bucks in really good condition. When I turn it on just for a split second it has a static type sound but go away immediately and works great. Should I put the mica on after doing a cleaning with the spray to keep it from breaking down the road? Thanks

[@Shuksanaudio]

Nice! That's a good deal! The output transistors should all come with Mica insulators from the factory. Running them without the mica insulators will short them to eachother and the amp won't work and you will burn up the output transistors.

[@johnnewcomb5162]

@Shuksanaudio Thanks it all went away it has been sitting for 3 years since the last time it was played, I listened to it one day for maybe 8 hours and it's back to working perfectly. Thanks for the information.

[@marcvdfv8431]

in the less powerfull units I found a lot of times that petroleum jelly was used as heat compound (or something that looked like it)

[@Shuksanaudio]

Hmm that is odd. It seems to have worked for a long time, whatever it is. Thanks for watching!

[@marcvdfv8431]

@@Shuksanaudio well, it doesn't dry out and does the job, and is a lot less messy! And thanks for the video!

[@johncribbs8382]

Just don't use Colgate old style white toothpaste like the manufacturers.they should have a thin plastic gasket as well as paste.

[@Shuksanaudio]

@@johncribbs8382 The insulator should not be plastic as that can still conduct. The insulator should be Mica. They are 2 cents a piece on mouser. Came from the factory with insulators.

[@johnnewcomb5162]

How much to send a receiver in to have this work done by you? Thanks

[@Shuksanaudio]

Hey John! I replied to your comment just now about the 2020, shoot me an email to chat more. I'd love to work on it

[@johnnewcomb5162]

@Shuksanaudio It's going good now but if I have any problems with it In the future I will definitely get ahold of you. I think it just needed to be played some hours from it sitting the last 3 years it ended up going away. I appreciate the return response.

[@rafacq]

Where do you sell your repaired equipment? Craiglist, eBay?

[@Shuksanaudio]

I post them on Instagram and eBay mostly. I will have a website in the next few months. Sometimes I post on craigslist or facebook marketplace for turntables or larger speakers that I don't want to ship.

[@matthewmccabe3925]

Can I plug 4 Ohm speakers into my vintage 8 ohm receiver?

[@Shuksanaudio]

Yes, as long as the receiver says that it can power 4 ohm speakers on the back. Depending on what amp it is, you also might not want to turn it up very loud as the lower impedance speakers will draw more power and make the amp run hotter. Thanks for watching!

[@johncribbs8382]

Two or a pair 8 ohm speakers creates a 4 0hm load on the amplifier. 2 4 ohm speakers amp will see a 2 0hm load. Check and see 🙈 f your amp is rated for 2 ohm. If the amp says 1 pair speaker A can handle 4-16 ohm speakers it should be ok as last ng as you do not connect more low impedance speakers to speaker B section. I would try check user manual to be safe

[@Shuksanaudio]

@@johncribbs8382 These are great tips!

[@marcvdfv8431]

the service manual does call for 50 mV of DC...

[@Shuksanaudio]

Yes, that is what I said in the video, did I not?

[@marcvdfv8431]

@@Shuksanaudio at 25:41 I thought I hear you say AC, twice?

[@Shuksanaudio]

@@marcvdfv8431 Ahh yes! That is my bad, I sometimes say the wrong thing in the video haha. Hard to keep what's in my head and what's coming out of it in line sometimes. Thanks for pointing it out!

[@Silent-Lucidity]

This is where it bugs me about people selling vintage equipment for big money. Just to fix a simple problem took 4 hours, and you still have to do the recap. Imagine what a person would pay if they didn't have the knowledge, skill, and tools to do it themselves. Now, that $200 vintage receiver just cost you $600 to $800 more to restore; and that's on the cheap. I'd charge at least $100 per hour, plus parts to do this work. If it takes 10 hours, there's a $1000 on a unit that's not worth more than $300.

[@killer257296]

People also want their stuff fixed and don't wanna pay for it, when I fix other peoples shit I really don't make more than 10-20$ an hour.

[@Shuksanaudio]

This unit just sold to someone for $450 and it should last them another 20+ years. Value is what the person places on it but I do get what you're saying to some extent. Most vintage will need work. It's not possible to buy something with the same build quality and aesthetic for the same price though, so if that is important to someone (it is to me) I'm happy to pay for that and get something that will last much longer than anything new in the same price range. Cheers.

[@Shuksanaudio]

You gotta charge more mate. Say no to people who don't want to pay you 🤷