Marantz 2252B Receiver Restoration Part 1 

Damn.....I have one of the silver US model ones. That black looks AWESOME.

I did a 2230 restoration with black push buttons and black knobs ,with the black faceplate. Looks even more amazing.

Thats an amazing Bday gift you gave yourself! Sometimes thats the only way we get want we want...

It is so nice to hear the joy in your voice! We all know you love this 2252B :-) It is my first time here and already such a good and informative video!

Watching the video brought back memories of my 1976 Pioneer SX1250 thats sitting in the living room untouched for years. I'd take it to the parks and people a mile away came because they heard it. Amazing its worth about $2000.00 now. Great restoration Jan!

Just caught myself trying to tilt my head to get a better look on the values written on the caps, then realizing I'm watching a video XD I fix consumer electrinocs for a living and I guess it happens to fall into certain habits when you do stuff like this for work everyday. :) I like your videos, keep up the good work!

Looks actually pretty good in black

Very nice video. II own a 2230 since 1974 and must change the fusebulb lights who have been brooken for decades. Cheers Claes

I have the pleasure of owning one of these. Picked it up for less than $300 AUD about 8 years ago. Still going strong.

Amazing job, well done! I have a Marantz 2226 myself which needed a little tweaking too.

Great job Jan!

fixing Your own birthday present - the best what u can get if U love electronics

Your videos are never boring. Great job!

Always a pleasure watching your videos Jan.

Nice to see you doing restoration in your socks!

Nice video and happy birthday for last year. Good to treat yourself to a dream machine. A nice 8 track would partner up well with this.

Great video Jan, Sometimes you just cant beat vintage gear for performance or a better original sound. It is true that they do not make things like they used to, cheaper components and sloppy ( to a price point ) design. This is actually visible more in the audio space as we see with vintage synthesizers that still command a hefty price 2nd / 3rd hand, aswell as speaker systems.

I do enjoy these vintage receiver/other hi-fi component repairs you do. I think the automatic rule for any piece of electronics with electrolytic capacitors more than 10 years old should be "replace all the electrolytic caps more than 10 years old.' Looking forward to Part 2.

That's a sweet receiver. I'm jealous.

Wow! This takes me way back. As a kid in the 60s and 70s, Marantz was considered the Cadillac of home stereo equipment with Pioneer being like the Porsche, Kenwood like the BMW and Alpine (yeah I know they were made more for Car sound systems) Mercedes Benz. What's weirder to think is that the higher end Radio Shack Realistic/Optimus brand equipment was pretty darn good to boot.

I got the 2225 which looks almost identical (it doesn't have the 'dubbing' jacks). It has a fantastic phono preamp and for a long time I used it just like a preamp for my active speakers which produces a really warm and rich tone. The Dark Side of the Moon sounds absolutely stunning through this amp. I do have a bit of a problem with the speaker selector buttons which causes the sound to distort sometimes. Not a problem when just using it as a preamp of course.

thats an amazing Receiver, i have the next model along but both are just great

outstanding video and great job on the repair

Had to take a brake from this long video, but i had to find out, how and if, you got the hummm removed. Lovely work!

I am doing an installation of a new Marantz SR6012 today for a customer. Marantz still makes a good product. They do tend to get super hot, though!

I used to write on my C128 and listen to my four channel system! Great sound!

If you are doing this kind of work, you definitely need to build a DBT (dim bulb tester). It can protect the receiver in case of a short and keeps the magic smoke from escaping!

"Engage safety squints", LOL that's classic, don't mind if I use that one. Great video as usual.

I have an old 2220b that a friend gave me several years ago. it works, but everything in it is old, so I'm nervous about actually using it for any period of time. Seemed like it might be a good starter project for me to kinda practice future-proofing something.

jan, that speaker switch spring i reckon a c64 keyboard key spring would work well there. also the broken plastic bit, 3d print the bit you need to replace it :)

I look forward to this serie!

„Back in the 70s, stuff was made to last or to be repaired.“ True that. Being a bit of a camera nerd, two of my favorite cameras (a Mamiya RB67 and a 645) also fall in the category called „built like a tank“ (and just about as heavy). Built in the late 70s, all they ever needed was new light seals. Otherwise they are still going strong. They literally don’t make ´em like they used to anymore. It’s a shame really.

Omg i didnt know it was valuable i have 1 in my living room sittin idle for 30 years, and yes it still works

Remember to discharge the caps across their terminals! Those are often push-pull so one positive terminal is at zero volts and it might still have full negative charge.

Brushed aluminum baby! Time for some Viking metal.

Tell us how you really feel about the unit.... lol. Awesome job and glad that you were able to track down a decent unit!

Nice job.

Jan love this stuff! I have my receiver from 1972 needs a go through! 4 channel lol

hammer , ich hatte auch mal einen Marantz , der diente mal als Kino Verstärker bevor er den weg in meinen Besitz fand :) , freue mich schon auf den 2ten teil .Tolles Video.

I remember looking through catalogs for audio equipment years ago and found many retailers artificially inflating power ratings by simply not showing which rating system they refer to. As such you always had to find the system advertised with RMS power ratings, you could then tell that another seller was using MPO or PMPO. 52W RMS = 104MPO = 208PMPO @Okurka I didn't say that's how the power is calculated. I said that's how SELLERS reported it. The SELLER would advertise a system as (100w) but would not show what (RMS, MPO, PMPO). So you could find the EXACT same hifi system advertised by a different Seller that rated it as (25w). The 25w rating was RMS and the 100w rating was PMPO, Which was a rounded GUESS at the peak power. I still have a system here that is (130w RMS 5 Speakers @ 130w each) that shows in the blurb as a (1000w system). Next time I suggest you read and understand comments before you reply

It would really be cool to somehow replace the giant transformer with something modern and tiny.

🤔 When the Marantz 2252B Receiver Restoration Part 2 ? Thank you very much for your contributions..., greetings from Monterrey Mexico...

Ooh, vintage audio hardware restoration... For when you're in the mood for something a little kinkier than a normal retro computer video.

not just measured from 20Hz to 20KHz rather than at 1KHz (or 100Hz rather than 40Hz on powered "subwoofer" outputs) but also old amplifiers' power ratings are at much lower distortion levels than those of modern amps, and they assumed use of 8 ohm rated speakers rather than 4 ohm rated speakers. that 52 watts (per channel into 8 ohms I'm assuming) is probably at something like 0.002% THD (total harmonic distortion for those who don't know) which is equivalent to something more along the lines of 73 watts per channel at 1% THD at 50Hz into 8 ohms (more at 1KHz) and 105 watts per channel at 1% THD at 50Hz into 4 ohms (again, more at 1KHz) so if it was a modern amp it would be rated not at 52 watts per channel but at 210w RMS both channels combined which is 410w peak! but of course that's still at 50Hz rather than 1KHz so it would be a ZOMG 500 WATT AMP!!! of course, in any case the resistive loads stated are most relevant to sealed enclosure speakers, as ported enclosure speakers like those Control 1s may be rated 4 ohms due to the drivers themselves, but the ports create impedance rise to e.g. 10 ohms at the lowest

All computers are broken Haha funny sticker Jan. Good job to , happy birthday ;)

Another nice video 😎

attention drinking game friends: if you sip on your drink every time he says "i guess" you will end up wasted in your piss and puke on the floor.

I have a 2216. Picked it up at a thrift shop for $11. Needs a new bulb for the VU meters but works great otherwise.

Ooh, pretty! I like that! Did you know that the caps in your audio path do make quite a difference? Panasonic has really nice ones..

250 euro! we had one in the warehouse playing for years and years.

Awesome

Would solid state caps be a better replacement in amplifiers? Electrolytic caps are pretty much guaranteed not to last 30 years, but I've not heard of modern dry capacitors failing or suffering from similar life-expectancy issues

Not gonna lie, that FM Tuning gauge looks awfully pissed (and confused) why you're pointing at it.

great receiver,,i have one

Found it 👌👍

yay more hi-fi!

Would've liked to have seen the new caps and where you got them from, but I still subbed, have a ax 550 yamaha with some noisey switches that's waiting for my attention, nice video.

Hi Jan, great to see some Maranz "Hardware" ;-) I've a Maranz 2245 from my Granddad. Round about 25 Jears ago the power switch stoped working and it w as replaced by a flip switch. Do you have any idea where i can get a proper power switch replacement? I've replaced all the lights in the front panel and it looks awesome. Only the power switch looks ugly...

Nice music on this episode, i thought.

You know what Hi-Fi component i always wanted? Telefunken MA-1. If anyone has a dud one that they aren't sure they can get working again, gimme plz! Problem is, they are fairly solid little shits.

Bad main filter caps will cause hum in old receivers. Watch out when replacing those orange colored small capacitors. They are 'low-leakage' caps and should be replaced with similar specification caps. Nichicon UKL is a modern low-leakage cap.

bringing my 2252B out from it's long sleep in my attic. Are there general videos for starting it up and getting it going for the first time?

What a lovely piece of kit Jan, i love vintage hifi and they really built these to last. How do you work out which capacitors to replace?

Why didn't you just screw The speaker terminals and then connect the wires? Nice video :)

"if you don't have the patience for this..." Yeah, that might be me/ Then again, while I'm watching this, I'm going through my daughter's laptop, trying to figure why WiFi doesn't connect anymore (and already had to do a modification for broken hinge mounts) Need to figure out how much is failing, to see if I should try fixing it further, or if there's just too much wrong with it (hey, it was a free machine to start with, so why not spend a few bucks for parts, right?). I guess it's more that I just don't have the work space to do any level of soldering and board level repair. Was much easier 11 years ago when I worked in the zSeries test lab and could borrow their repair room.

Gut gemacht, Jan. Ich sollte mal versuchen, meine zu reparieren. Es ist aber nicht so gut. Ich habe hier zwei Fragen. Eine Frage, wie lange dauert es, irgendetwas mit Ihrem provisorischen Entlader zu entladen. Eine andere Frage, gibt es noch andere Dinge, die bei etwas jüngeren Empfängern ein Brummen verursachen können? Danke Jan.

Gibts denn irgendwann den zweiten Teil? Die Spannung zerreißt mich förmlich. ^^

Did you happen to locate the missing spring on the speaker selector switch? The whole time I'm watching the video my mind kept thinking ahead to the day when you are all done and you install it and that little spring slips from it's hiding spot and shorts something out :)

Are you Jurgen Klopp? You sound exactly like him.

My experience with Marantz it's never the large caps it's always the small caps that have gone bad that's why you have the hum yes you are smart and replacing all the caps some people say don't other people say yes it changed the sound I've heard both we've only change the bad ones unless you were a complete and utter I know how to say it nutcase there's very very very little difference I haven't heard it I find the best thing to do if it's the original cap that's in there and it's still working leave it alone but if there's a bed cap replacing find a Bed cap replace it but if the ESR is hired and it still working replace it if the ESR is higher than its supposed to be replace the cap because that caps going to go bad and you better off replacing it and then waiting for it to go bad down the line and I have to have it take it all apart again when you are already working on it so you're better off doing it now and getting it over with before it goes bad completely that's the way I do it and every receiver that I have put away I can take it out plug it in and I work all the time and that's how much confidence I have in my repairs

How about that, my brother just resurrected his old Marantz 2265b from the basement and decided to bring it back into his life. Back in the early or mid eighties he paid a few thousand for this, with speakers etc , perhaps. He learned a new term for him:recap

I know this is an old video sometimes you're like me it takes a long time for you to get back to your own personal property and you repair other people's stuff before your own hopefully you haven't dug into the tuner little warning sometimes when you change capacitors in the Marantz tuners it can throw them off and you may have to retune them I suggest that you just test at the capacitors and if they don't have it high ESR put them back in and leave them alone because you can open up a whole can of that pain in the ass with this tuner on that particular receiver because you can throw that whole thing out of alignment especially in the multiplex section so watch what you're doing

Hey mate, What happened with this project?

The thing I don't understand is you're there already why don't you just put banana connectors on there that much better for you they're easier to connect the connection is even better for Better Sound and it's easier for connection and disconnection and you don't have any more Springs in to worry about and those connectors Eddie replacing back with it are so flimsy that they can break all over again and they sell banana connectors just like that on a bridge that you can replace those with and it's so much nicer looking and if I'm not mistaken that Marantz used to put them on their units until they started getting cheaper on the B units which that one is need to look up your Marantz history I happen to have a half a dozen Marantz receivers and I happen to be a fan of Marantz I also like Macintosh and I'm at I guess that's a bit of an audio file so I also like tube receiver so I have about three or four can't remember the last count that have been stored away Fisher receivers I think one of them is an amplifier I don't remember I have them in storage and one or two Scott receivers I've been doing this for quite a few years I have picked them up from garage sales and really bad shape and I completely restore them from top to bottom I even have somebody who can reproduce the print on the front perfectly that even the experts can't tell the difference so I like to keep them in pristine condition and I have one that is set up in my office and I have Macintosh in my living room

Wow I have 1

I'm still angry I sold mine for like 150$. Bought it for 35$.

im learning german at school as 3rd language

WTF! Where’s the floppy drive? Where’s the keyboard? How do I hook it up to a color TV, or program in BASIC on it? Where’s the C64 logo? 😆

I like your videos, especially where Marantz is involved, but shrinking heat shrink with a cigarette lighter! For someone who puts themselves out there on RU-vid and clearly has some knowledge of electronic equipment, that is a NO NO! Get a heat gun. They are cheap and usually come with an assortment of nozzles.

Part 2?

Mmmm, vintage Marantz *rubs thighs suggestively*

had to turn the sound off.................................................................