FAILED filter cap on this MONSTER of an amp! McIntosh MC 2200
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- Опубликовано: 6 май 2023
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"Very eager to make someone go deaf" is a great way to describe a powerful amplifier - nice job, too!
Cat dancing, sparks, cool jazzy music playing, fusible links and replacing e-caps. This video has everything! I hope your
neighbors liked the music.
Good job getting that gentlemen's amp back in full working condition, it's good now for another three or four decades. Well done!
Good job for what...?
@@matrempit2885 He brought the amplifier circuit back to specifications for as little investment as possible, exactly what the owner wanted.
Nice to see I'm not the only one who makes sparks😂
I appreciate very much that you make these videos for the youtube public. I subscribed months ago and look forward to your new videos as I learn something from each of them. In addition, they are entertaining. Bravo to you!
The red ROE capasitors on the driver boards are notorious for going bad
Those brown electrolytic caps are notorious for going bad.
Nice amp and another good job. Always great to watch these videos
McIntosh is legendary. Their car audio equipment is beyond most companies top notch equipment. Harder to find these days at any reasonable price.
What is beyond top notch ???? Imaginary notch....
@@mikepxg6406 the notch is in your head. you sound like someone who can't afford the stuff.
@@mikepxg6406 Is it possible that your mid-notch stuff is superior to my top- notch stuff? Maybe even superior to most people's top-notch stuff.
For your commitment, you deserve the due Like. And I must say that your activity has contributed to making me feel confident to face situations similar to those you have presented on your channel. I can only wish you health and energy to continue.
Greetings from Portugal.
Macedo Pinto
Nice video! I don't know how you have all of this repair knowledge, but I'm glad you do.
I agree with the comment below. Overall I like your laid back approach & I think the jazz music you play during your work & at the end is just the right kind of music to fit with your style. You really brought life and value, musically & monetary to this classic powerhouse of an amplifier.
Awesome video! You are a great engineer! Very modest to!
When you first measured the amp I was thinking, you REALLY don't want to see DC at the outputs of a McIntosh, because that would mean the output transformer is damaged. Luckily you saw no DC. I have a McIntosh 250 (2X50W) from the late '60's. It is a beast. I can only imagine how much this 2200 amp weighs! McInstosh solid state amps from this era were transformer coupled, just like tube amps. Those transformers would let the amp drive almost any kind of speaker, just by choosing the right output windings for the load.
Can you elaborate on this? My MC2205 has 5mv and 6mv at the terminals. Fresh caps, bias set, everything works and sounds great. But your comment has me questioning that…
@@tylerhackman6832 I think you're OK with 5 or 6mV. I had a quick look at the MC2205 service manual, and your amp uses a non isolated "autoformer" rather than a fully isolated transformer. The amplifier stage is designed to be 0V DC at idle, but it could have maybe a few 10's of mV of DC offset (not adjustable), and you would see some of that on the terminals as it flows to ground through the single winding of the autoforrmer. Not a concern unless it's getting hot or having vastly different readings from R to L channel. You might want to try switching the speakers ON and OFF to see if the 5 or 6mV goes away in the OFF state, just for a meter sanity check. Enjoy your nice amp!
Solid state Mcintosh have autotransformers not conventional output transformers. An autotransformer has only one coil which performs the functions of both the primary and secondary windings by loading the output transistors and providing output taps at different points for each impedance. It does not provide complete DC isolation.
Mick Jagger & Kieth Richards are not happy with you sitting on their record..😂....Love the videos , keep up the great work 👍
Yeah, I've never seen anyone sit on a stack of vinyls!
That is a nice amp. Glad to see everything working nice job . There is a amp that can feed the current hungry subs and not break a sweat .
I’m really enjoying watching your trouble shooting👍
Great to watch you work, being an old engineer
Love The Channel!!! Sitting on a throne of vinyl and subwoofer. Wow! Might catch more attention than the dancing cat.
Thank you very much. Very informative.
Nice catch on the power supply for the indicator lights.
I just completely reworked a Marantz 2238B for a Guy. Ive done quite a few Receivers, Preamps, and Power Amps
. This Marantz was not much fun. Very difficult to access components. But got er done. Nice work on that Monster McIntosh. I mainly only work on tube Macs.
Very cool. Love mine
Bravo for your videos and your repairs that are always pleasant to watch.
You should inspected on both cards (16min on the video), the Bakelite Capacitors from the ROE brand (red/brown).
They derive strongly over time, their tolerances are 20%
Greetings from France
What a beautiful chunk of metal❤
FINALLY! A channel that uses proper fader cleaner in pots and not just regular contact cleaner designed to eat carbon.
Great amp. Long time ago when I worked in live music a friend and a band mate worked as the sound guy for a couple of bands and had a JBL double four way PA with a rack of four Phase Linear 700 power amps. I worked with him sometimes as a roadie and those amps sounded great but that rack sure was heavy.
This is very good..logical troubleshooting with a dmm and a very helpful lesson! You are building your channel and helping others it's a win-win !! Thank you. Nice that you showed the reality of it too and not edit out. Appreciated. Keeps us on our toes!
Great video. Thanks
Very cool, thank you.
Great video and job on this amp. Only thing I would add is to measure the resistance of the protection relay. The contacts will oxidize over time and most need cleaning with age. Contact resistance should be milliohms and have seen many old relays with 10s of ohms before cleaning. Can have issues when relay is in line with the speakers. Good luck!
Fusible links? Every circuit trace is a "fusible link" under high current conditions. But putting a 1A fuse in to bridge the burned lanyard is First Class. Another excellent job.
THANK-YOU VERY MUCH SIR, STAY AWESOME.....KITTY CAT TOO !!
Love the color of the new caps....😂
I liked the fireworks; hope they didn't hurt you or your cat! Also...I realise I'd make MUCH more boring videos than you, because my nose would constantly be in a schematic the whole time, lol! Finally...I LOVE your genius-level triggering by seeming to sit on those LPs. Of course...those sleeves were empty, right? Right? Hello? You don't mean to say...
Very good.. Can you talk about solder de-solderers? I see the brand you use.. but I do see some different models of that brand. What's best? Thanks.
In my whole career I found once filter cap failed. Especially at high end machines...
Awesome cat!
Nicely done Aidan👍👍 Having boards with connectors is a nice feature for repair or replacement for sure. Good job fixing this monster amp. I watched the 10 sec "Ooops" video and it looks like another McIntosh is in for a repair, sweet. See ya next time.
If your tech loves cats, you got a good tech
Why didt you change the 10uF 63V Roederstein caps on the driver board “they are red”
Did you really sit on a stack of records? I died inside.
My exact reaction!
That kinda grabbed me too. i've heard of new pressings, but dang
He’s just plain careless
@@nelsondog100 One can only hope he had removed the vinyl and was doing the ultimate troll-job.
Come on man!
Those are some CHONKY bois!
I used to have a barrel full of Sprague's the size of tennis ball cans. 😅
"Used to have" ? that's a shame hey are worth a bomb !
Do you repair receivers if sent to you? If so I’ve got a 60 watt Yamaha CR 840. Bought it back in 1977.
Bias is set with ccw on both . But turn up each only to get 6w on first mark spot turn it bk dn ccw and then on second do same. You said in verbal u turned second up to 35? Both should be set to spec. I’ve been doing Mac amps for 34 yrs. Manual says repeat steps for each channel independently . It’s last line in notes. Your going to get a pop turning off out of speaker if speaker switch is on. Any may see an offset diff at speaker terminals. He’s a neighbor so perhaps recheck?
I happen to have a mid 70s Marantz 240D power amp. no sound, hasn't been played in years. Should I bother having somebody check it?
Nice!
Hopefully, he will shelve it somewhere so it can get adequate ventilation.
I love it. Genius. So interesting. Wish you were my neighbor so I could learn a thing or two. Nice turntable too. Old Sony PS-X5? I live not 40 miles from McIntosh.
Yup! ruclips.net/video/6PFk7cuMjfU/видео.html
I haven't heard Holy Moly for awhile (maybe at a camping skit in Wisconsin). Is the schematic really that important? Nice job again being transparent, sharing your mistakes as well as successes.
Yeah a schematic can avoid 'shotgun replacement' of good parts, you learn a lot and save time. If you get into this hobby you should cherish you schematics !
Do you repair viewer's equipment? How do I get in touch with you?
nice vintage amp
Can I send you my 2285B it works but there’s all kinds of little issues I think it just needs to be cleaned and the deoxted but I don’t know ?
All my lights just went out at first it was only left channel now both channels lights are out😩
Amazing work.. Question: Were you sitting on vinyl records, at the end?!? 🤣
I would not like to see the Speaker Cable you use on the Maggie's to hook up the Amp you worked. On
You sat on your records?
Noooooo, the vinyl records !!!! Don't sit on them !!!!
Lets just see if you change the nasty power cable. Maybe a detached
Power cable. Let's see what happens.
Nasty binding post
Nice fuze upgrade. Would be nice
GreaT STUFF
If you bring that back to Macintosh in NY they will refurb it to like new condition.
3:10 Transformer coupled output cannot have any dc in case of a fault
Hey Adin! I've got a question. I am trying to work on my first reciever my mom and dads old SX-750 but here are the problems I have encountered. First of all there is no relay click and second it isn't getting any sound from the turntable. I suspect the sound problem has to do with the relay click, Anyway I haven't really found any ideas online of what could be causing this issue so I thought what the hell might aswell go to my favourite channel and ask for some help. What do you think right off the bat might cause this? Is this a normal issue for the SX-750? Do you have any ideas that could help me that I could try?
Thanks in advance Adin, Daniel.
Either the relay has failed, the protection circuit has failed, or both of these are working and they are protecting your speakers from DC voltage out of the power amplifier. You will get no sound out of anything without the relay click. Time to get out the multimeter and look around!
I have two McIntosh amps an MC7100 that I've owned since 2000 and an MC7108 that I bought for parts off of eBay last year. The MC7108 just needed a new fuse and capacitor in the power switch circuit and it works perfectly and it is a beast of an amp. McIntosh is the real deal. Their listed specs are the MINIMUM that their equipment will perform at. Instead of some farcical rating that other manufacturers like to use in their marketing. Both of my amps are 30 years old and work like new.
You have hard time fitting ps board straight with pin slit with in those 2200 non axil caps
This power amp made in Kelantan Sdn Bhd Malaysi🇲🇾....
👍👍👍👍👍👍👍
Not sure why he left in those pesky ROE / ERO ones but okay. I guess they are pretty old type ones
The four brown ones in the pre amps. He probably did not recognized them as electrolytes, lacking experience.
Another problem in repair was that after the filter cap(s) showed bad, it is best to check the bridge rectifier diodes too. If bad, you could destroy your new caps.
it´s very important replacing the ERO Caps. They are known tend to Fail that age
@@radiologe9271 the ones in my old Quad 303 did..
@@erikdenhouter yes, I meant the brown ones. I have very bad experience with the ROE (ERO) and FRAKO caps. Some of the golden ones even short out. I always remove them.
@@stefanegger Well, your comment is valid, but I have never seen him reacting on a negative comment, although it is positive feedback.
Maggies are sponges for sure so this is a good test.
Those are some chunky and expensive caps.
You didn’t replace the brown caps that are always bad
What does the lamp bulb do in your debugging ? Serial ? Noooo
Where did you find 39,000 capacitors.? My mc 2105 has the same, I could only find 42,000 in that profile ..
Go back in the video, I think the Mouser part# was on screen for a sec
@11:22
That Mouser number comes up as 41,000 uf (which, of course) is acceptable in place of 39,000 uf. BTW, those caps cost $63.98 (USD). Wow.
@@JohnMason8183 Your right, I could not remember the value.. The caps in my amp were replaced 10 years ago..
The sound of the amp remained excellent..
Desperate looking for a knob from a mac4100
Dude, sitting on a stack of vinyls?
you forgot the Bp Capacitors
McIntosh is the best. But not providing manufacturing part numbers is a doosh move for sure
I would guess that Mac amp is biased more toward the class B side, than the Class A side......... considering it's a Class AB. The closer into B it's biased, the less idle current draw.
It's class-A up to about 12 watts output, then AB for the rest of the range.
The fact that you can easily pull this amp out, I would consider this amp not massive or heavy. 🙂
I had one. It's 85lbs.
DC Ripppppppppple.
Nice fix! Don't sit on your albums!
I know you will put a Proper power cord on her. & some nice
Binding Post
Be the Man
Dude, take it easy on the handheld shaky cam.
You'd think the price of those it would be made of military grade components and be indestructible.
Electrolytics are on borrowed time from the day they're manufactured.
The amp is over 40 years old. Now that it's fixed it will run for another 40 plus years.
The cat thing was a bit weird…..
120Hz hum...faulty filter cap.
You do know that its time to replace the thermal paste on the output transistors.
It has output transformers. There will never be DC current.
Why do people not clean dust in homes.
We can chip in and buy him a can of pledge! I saw that also!
I'd hate having to move that tank around to try and dust. That sucker weighed a ton.
Your neighbor needs to be educated as to why putting a big power amp in a tight cabinet with poor ventilation is why you are going to be recapping it. Oh BTW the auto transformers are a very low ohm DC path to ground .
The first electrolytics could have been -20 +50% tolerance. But if you were actually experienced, you’d know this.
I find this channel quite frustrating because you barely know what you’re doing.
Agree. And I'm not sure why he doesn't replace axial caps with axial, looks sloppy using radials. I've seen him do this on point-to-point wiring in a MAC1500 hybrid receiver. Frustrating: do it right or not at all.
When you say your neighbor used to run a sound company in the 70's. are you specifically referring to "The Sound Company" in Springfield Mass?
Probably not. They were in New Haven, CT