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Consoles => Magnificent Magnavox => Topic started by: NewAtMag on April 16, 2019, 07:59:27 PM

Title: Magnavox Intermezzo - Swedish Modern, Model # 1SC256 K
Post by: NewAtMag on April 16, 2019, 07:59:27 PM
Hi, all.

I recently purchased my first Magnavox console record changer. I am new at this, and learning as I go via the internet. If anyone has any thoughts, advice, or even a story or two, please feel free to share them.

Style: Intermezzo Swedish Modern
Model Number: 1SC256 K, Mahogany
Year: 1961
Amp: 8301-10 , 100W

My history with it:
I bought this from a used furniture dealer in Kernersville, NC for $50 on April 9, 2019. She said that had acquired it at an estate sale of a house that had been closed up for twenty years. It seemed to be in good condition cosmetically, and she said that while it would power up, turn the platter, and move the arm, she couldn't get those things to happen at the same time. It included all the original paperwork: Instruction manual, warranty certificate, warranty card, inspection card.

Initial inspection results:
It would play at 33 speed when set to 45, and when set to 33, the platter wouldn't spin at all. All four speakers worked, and all the vacuum tubes lit up. The drive wheel seemed to be in good shape. The idler wheel was hard and had a divet in one place. The motor mounts were squishy and falling apart. Both needles looked a bit corroded, but not awful.

Cleaning and re-greasing:
I removed the platter from the turntable, and then the turntable from the console. I also pulled the idler wheel off. I cleaned off all the old grease I could find. I used Gumout Carb Cleaner for this. Then I put 3-in-1 oil in the motor bearings and the idler wheel post. I used white lithium grease on every other moving part I could find, generally making a mess with the stuff. I also packed grease in the center post ball bearings. Oh, and I cleaned the thick layer of dust off the vacuum tubes.

Motor mounts repair:
The bad motor mounts were causing the motor to sit too low, which was causing the idler wheel to hit the wrong part of the spindle, which in turn caused the platter to spin at the wrong speed. I ordered new motor mounts (model M2) from www.thevoiceofmusic.com. The new motor mounts caused the motor to then sit a little high. I used the idler wheel adjustment screw to raise it just a bit to align with the motor spindle.

Idler wheel repair:
I ordered a refurbished (new rubber) wheel from www.thevoiceofmusic.com. Wheel #1449. I was pleased to see that it was an exact match for the old one.

Better, but still playing slightly slow:
With the cleaning, greasing, and new parts, it was much better but still a little slow. I found some black hard rubber along the inside edge of the platter. I sanded it a bit and cleaned the rest off with rubbing alcohol. I also cleaned the edge of the new idler wheel with rubbing alcohol. I printed out a stroboscopic test record onto cardstock, and downloaded Strobily, which is an Android app. It has a nice feature to set the strobe to calibrate turntables. Using the stroboscopic test record and Strobily, I confirmed that I'm really close to the correct speed now.

New needles:
I bought new needles from www.thevoiceofmusic.com. Parts 352-D7 and 352-S3.

External cleaning:
The wood is in really good condition. I cleaned it with soap and water, paper towels, and a toothbrush.

After all that:
I really love it. It's playing reliably, the changer function and the return function work. It's just a neat old record player. When I was growing up, it seemed like every house had a console record player, but I don't ever remember seeing any that looked this cool.

Upcoming repairs:
It seems like there's more sound coming from the right speakers than from the left. The treble cuts out sometimes as the treble control is being turned. All this points to electrical problems, so I need to pull out the wires, clean the speaker and amp terminals, clean the potentiometers, and re-cap the amp. I know that the amp could be destroyed if I allow one of those old caps to blow, so I should re-cap it sooner rather than later.






Title: Re: Magnavox Intermezzo - Swedish Modern, Model # 1SC256 K
Post by: NewAtMag on April 16, 2019, 08:02:28 PM
Some scans of the paperwork that came with this record changer.
Title: Re: Magnavox Intermezzo - Swedish Modern, Model # 1SC256 K
Post by: NewAtMag on April 16, 2019, 08:05:46 PM
Some more labels and number photos.
Title: Re: Magnavox Intermezzo - Swedish Modern, Model # 1SC256 K
Post by: NewAtMag on April 16, 2019, 08:08:12 PM
A few more photos.
Title: Re: Magnavox Intermezzo - Swedish Modern, Model # 1SC256 K
Post by: Bill on April 16, 2019, 08:22:36 PM
All I can say is WOW!  You have done everything correctly so far with the changer.  Now it's time for the amp, and if I may give you some advise...don't wait!!  One day it is working fine, the next day poof.  First install a fuse.  Then replace all the caps, both electrolytic and paper, using the brands you prefer.  You can re-stuff the electrolytic can, or hide your new electrolytic caps under the chassis.  Your choice.  Again, axial or radial caps, your choice.  Clean all controls, contacts, switches, and anything else you can see that needs cleaning.   :)  Don't forget to check your resistor, and once it's all done you will have years of enjoyment.  Please keep us posted with your progress.  Good luck, and have fun.   ;D

Bill
Title: Re: Magnavox Intermezzo - Swedish Modern, Model # 1SC256 K
Post by: NewAtMag on April 16, 2019, 08:39:49 PM
All I can say is WOW!  You have done everything correctly so far with the changer.  Now it's time for the amp, and if I may give you some advise...don't wait!!  One day it is working fine, the next day poof.  First install a fuse.  Then replace all the caps, both electrolytic and paper, using the brands you prefer.  You can re-stuff the electrolytic can, or hide your new electrolytic caps under the chassis.  Your choice.  Again, axial or radial caps, your choice.  Clean all controls, contacts, switches, and anything else you can see that needs cleaning.   :)  Don't forget to check your resistor, and once it's all done you will have years of enjoyment.  Please keep us posted with your progress.  Good luck, and have fun.   ;D

Bill

Wow, Bill. Thank you for that! Honestly, I'm a bit daunted by the re-capping. I have a college degree in electronics, and I've done a fair amount of tinkering, but this thing has so many caps. It seems like a big job. Maybe I'll devote a Saturday to it. I wasn't sure what was in that can. Will I be able to pull the existing cap out of that can to see what size it is?
Title: Re: Magnavox Intermezzo - Swedish Modern, Model # 1SC256 K
Post by: NewAtMag on April 16, 2019, 08:59:39 PM
Oh, and should I look forward to hearing a sound improvement once the recapping is done? Or am I just doing this for the sake of safety?
Title: Re: Magnavox Intermezzo - Swedish Modern, Model # 1SC256 K
Post by: electra225 on April 16, 2019, 10:05:00 PM
What Bill said.  Be sure to put in a fuse.  And don't forget the capacitors in the crossover network.  You may not hear a lot of change in the way it sounds.  Safety is the predominant reason for doing a good tune-up before something unpleasant happens.  Nice job and good luck.  Welcome to the forum!   :) :)
Title: Re: Magnavox Intermezzo - Swedish Modern, Model # 1SC256 K
Post by: TC Chris on April 16, 2019, 10:33:30 PM
And one more comment.  I remember reading somewhere that rubbing alcohol often contains a lubricant to make it more rub-able, so it's not the best choice for cleaning friction devices.  I haven't verified that claim.  Your hardware store will have shellac thinner alcohol.  It's cheap and useful to have around anyway.  I just looked online and it's usually denatured (poisoned) ethanol, or can be methanol, and maybe even isopropyl alcohol.  The ame source pointed out that rubing alcohol s 30% water so it isn't useful for thinning shellac.  I've always got a can of hardware-store alcohol in my paint and solvent cabinet.

Chris Campbell
Title: Re: Magnavox Intermezzo - Swedish Modern, Model # 1SC256 K
Post by: electra225 on April 16, 2019, 10:51:35 PM
There was a guy in the store the other day who bought a bottle of Everclear.  He said he was going to use it to thin shellac.  Did you ever hear of anybody using Everclear to thin shellac? 
Title: Re: Magnavox Intermezzo - Swedish Modern, Model # 1SC256 K
Post by: TC Chris on April 17, 2019, 12:09:28 AM
You can't buy it in Michigan.  I tried.  Even the pharmacy couldn't get it.  I suspect it's pricey, and anybody who claimed to be thinning with it was referring to changing the viscosity of his blood, not his shellac.  I needed grain alcohol for an old compass.  The instructions said refill with 50/50 alcohol & water.  Somebody pointed out that the solution is to buy cheap 100 proof vodka--clear, and half alcohol.  So I did, and there's a pint bottle of cheap vodka in my cabinet as compass fluid.  Really.  Not for increasing blood alcohol % or for thinning shellac.

Chris Campbell
Title: Re: Magnavox Intermezzo - Swedish Modern, Model # 1SC256 K
Post by: Bill on April 17, 2019, 07:33:17 AM
First let me say, don't be afraid!  If I can do it, so can you.  :)  Next, you will need a schematic/service info.  I did I quick look in the downloads but did not see your amp listed.  :(  Check on line, and you can ask here on the forum.  There is a wealth of information/documentation available from the members just for the asking. 

As far as recapping, the only electrolytic I see is the can cap.  The values are written on the side and pretty easy to read.  The only other caps I see that should be replaced are the two white ones on the bottom side of the chassis.  There maybe something hiding that I can not see in your photo.  The schematic will show and tell all, and important to have before you start.

As far as re-stuffing the can cap goes, there are several ways you can do it, and several opinions on the correct way.  It really boils down to what you are comfortable with.  Greg/Electra 225 has a pretty simple way to re-stuff, and there are several examples on line.  Or, you can just bypass the can cap and install your electrolytic caps under the chassis.  Again, it's yours, and your preference. 

Both Chris and Greg had good points, and things that I have a tendency to forget.  Referring to the crossover caps, and using something that won't leave an oily residue on the changer tire. 

This hobby brings lots of enjoyment to most of us, I know it does me.  I enjoy the hunt, looking for something unique, cheap, and then making it work.  And, if you have not read or noticed, this hobby is addicting.  I think this saying has become the forum motto:   "There is always room for one more."   ::) ;)

Ask question if you need too and someone will usually jump in and give a helping hand.  Good luck, and most of all have fun.  :)

Bill
Title: Re: Magnavox Intermezzo - Swedish Modern, Model # 1SC256 K
Post by: NewAtMag on April 17, 2019, 08:01:47 AM
Hi, guys.

Thanks for the tips. The alcohol I'm using is 90% Isopropyl and 10% purified water. Hopefully that's good enough.

Bill, Chris, and Greg, thanks for the fuse and cap advice. Bill I especially appreciate you telling me about which caps you notice need to be replaced. Sounds like there are just a few in the amp. And then I do have one paper cap on each of the 2 small speakers. I'll replace those also. I'm definitely less scared now. In fact, I'm excited about it.  :)

I'll look at a video or two about re-stuffing a can, but really, I'll probably just tuck the cap into the amp with all the other circuitry.

And there are schematics floating around for this amp. I'll hunt those down again and share them here.

And as for "There is always room for more," um, no, I'm pretty sure there's not. Just ask my wife.  :)
Title: Re: Magnavox Intermezzo - Swedish Modern, Model # 1SC256 K
Post by: NewAtMag on April 17, 2019, 08:07:44 AM
Oh, a question:

Should the paper caps be replaced with film caps? And the electrolytic caps replaced with new electrolyte caps?

Thanks.
Title: Re: Magnavox Intermezzo - Swedish Modern, Model # 1SC256 K
Post by: electra225 on April 17, 2019, 09:53:21 AM
Yes and yes.  Happy to help.
Title: Re: Magnavox Intermezzo - Swedish Modern, Model # 1SC256 K
Post by: Bill on April 17, 2019, 12:45:44 PM
Like Greg said, yes and yes.  The paper caps get film, and the electrolytic get electrolytic.  But, the electrolytic can cap has different chambers.  There maybe three or four caps you will need to make up what's contained within the can cap.  Then you will either re-stuff or hide under the chassis.   :)

As far as "There is always room for one more",  let your wife pick out the cabinet of her choice.   ;)

Bill
Title: Re: Magnavox Intermezzo - Swedish Modern, Model # 1SC256 K
Post by: NewAtMag on April 17, 2019, 01:08:01 PM

As far as "There is always room for one more",  let your wife pick out the cabinet of her choice.   ;)


Now that you mention it, when this one was just a photo on the internet, we were trying to figure out what dark corner of the house we'd hide it in. But when she saw it in person, she wanted in the living room! But the cats would scratch it up there, so now we're looking for a dark corner again. Point is that she sees the beauty of it now.  :)
Title: Re: Magnavox Intermezzo - Swedish Modern, Model # 1SC256 K
Post by: 1959MagnificentMagnavox on April 17, 2019, 01:21:42 PM
I like the handles style on the front. very nice find and for 50.00 thats a heck of a deal
Title: Re: Magnavox Intermezzo - Swedish Modern, Model # 1SC256 K
Post by: NewAtMag on April 17, 2019, 01:28:18 PM
Yes, I agree that it looks good and that it was a great deal. And there's nothing fundamentally wrong with it either. Normal wear and tear from age. For $50, I'm very pleased.

And to think that it cost almost $200 back in 1961. That was a ton of money back then! It makes me even happier about the $50 price that I paid.
Title: Re: Magnavox Intermezzo - Swedish Modern, Model # 1SC256 K
Post by: NewAtMag on April 17, 2019, 07:08:10 PM
Hey, guys.

Can you give me some pointers regarding the installation of a fuse? Is that fuse just inline with the hot side of the power cord?

Thanks.
Title: Re: Magnavox Intermezzo - Swedish Modern, Model # 1SC256 K
Post by: NewAtMag on April 17, 2019, 10:26:47 PM
Hey, guys.

Can you give me some pointers regarding the installation of a fuse? Is that fuse just inline with the hot side of the power cord?

Thanks.

And what rating fuse would you use? I'm guessing 1A, as this is a 100W device on a 120V supply. 100 divided by 120 is 0.83Watts. What about the voltage rating? Looking at arrow.com, I'm confused with all the fuses and fuse holders. What would you all use?

Title: Re: Magnavox Intermezzo - Swedish Modern, Model # 1SC256 K
Post by: Bill on April 18, 2019, 07:41:08 AM
If you go to Digikey's website and look for their fuse number F1498ND, that's the style I use.  It does not need to be from them,  but that's the style, with a single hole in the middle to mount it with.  I just drill a hole in the chassis, use a bolt, lock washer, and nut, and bolt it in place.  It is in line with the hot side of the power cord, and your formula is also correct to pick the size of the fuse for amps. At least that's the formula I use.  As far as voltage goes, I think you are safe up to 250 volts.  I would also recommend a time delay or slow blow.  I have purchased my fuse holders at automotive store, Radio Shack, or any store that might deal with electronics. 

I hope this helps!

Bill
Title: Re: Magnavox Intermezzo - Swedish Modern, Model # 1SC256 K
Post by: NewAtMag on April 18, 2019, 08:04:45 AM
Thanks, Bill. That's very helpful. A quick Digikey search and Google search doesn't find F1498ND, but I'll keep looking for it.
Title: Re: Magnavox Intermezzo - Swedish Modern, Model # 1SC256 K
Post by: NewAtMag on April 18, 2019, 08:19:38 AM
Searching Arrow.com for  F1498ND yields one result, and it looks like what you described:

https://www.arrow.com/en/products/03540101zxgy/littelfuse
Title: Re: Magnavox Intermezzo - Swedish Modern, Model # 1SC256 K
Post by: Bill on April 18, 2019, 12:21:31 PM
That's it!  It's just an example, they are available most anywhere.  Have you looked at Sal's website?  A lot of us use Sal.

Here's his site:

http://www.tuberadios.com/capacitors/

Bill
Title: Re: Magnavox Intermezzo - Swedish Modern, Model # 1SC256 K
Post by: NewAtMag on April 18, 2019, 12:47:50 PM
Great.

I ordered one of those, and I ordered a different style also https://www.arrow.com/en/products/03420038h/littelfuse

I'm not sure which one I will use. The second one seems beneficial in that its electrical connections could be inside the chassis while you'd still have access to replace the fuse from the outside of the chassis.

I didn't look at Sal's website. Maybe next time. I had already picked out all my capacitors on Arrow, and they have free overnight shipping on all orders, so it's tough to beat. I should receive the parts tomorrow, so i can get the work done Saturday morning. And then by Saturday afternoon, I can be enjoying the Magnavox once again.

Thanks for all your help and advice.
Title: Re: Magnavox Intermezzo - Swedish Modern, Model # 1SC256 K
Post by: danrclem on April 18, 2019, 02:56:03 PM
Here are some fuses that look like a bargain but sometimes cheap doesn't mean a bargain.  Anybody ever use these.  I might have to order me some.

https://www.ebay.com/itm/10-x-Panel-Mount-Screw-Cap-Fuse-Holder-Case-for-Glass-Tube-Fuses-1-4x1-25/332180479272?hash=item4d577fdd28:g:~kwAAOSw3gJZFI41:sc:USPSFirstClass!40047!US!-1

Those above are rated for 125V but these are rated for 250V but they ship from China.

https://www.ebay.com/itm/4PCS-SCI-R3-14C-Panel-Mount-Chassis-Fuse-Holder-For-6x30mm-Glass-Fuses-10A-250V/372620268100?_trkparms=aid%3D555018%26algo%3DPL.SIM%26ao%3D1%26asc%3D20131003132420%26meid%3D353f932cf8234794aa72ed0646104f23%26pid%3D100005%26rk%3D1%26rkt%3D12%26sd%3D312439741497%26itm%3D372620268100&_trksid=p2047675.c100005.m1851
Title: Re: Magnavox Intermezzo - Swedish Modern, Model # 1SC256 K
Post by: Bill on April 18, 2019, 08:00:09 PM
Either will work, it's your choice, and what you feel comfortable with.  Let us know how everything comes out.  Music is just around the corner.   ;)

Bill
Title: Re: Magnavox Intermezzo - Swedish Modern, Model # 1SC256 K
Post by: electra225 on April 18, 2019, 10:25:48 PM
AES has fuse holders for $2.


https://www.tubesandmore.com/products/fuse-holder-3ag-type-high-quality (https://www.tubesandmore.com/products/fuse-holder-3ag-type-high-quality)
Title: Re: Magnavox Intermezzo - Swedish Modern, Model # 1SC256 K
Post by: NewAtMag on April 19, 2019, 09:04:08 AM
Thanks, guys. This is all great.

FedEx tracking shows that the package has arrived at my house. It's got caps, fuse holders, and fuses in it. I hope to get this work done tonight. I also plan to replace the power cord. The old cord seems to be fine, but just for grins, I pulled a modern cord off a broken DVD player. Better safe than sorry.

I'll post my results here. Hopefully soon!

Thanks again.
Title: Re: Magnavox Intermezzo - Swedish Modern, Model # 1SC256 K
Post by: Bill on April 19, 2019, 11:40:54 AM
Thanks for keeping us in the loop.  ;)

Bill
Title: Re: Magnavox Intermezzo - Swedish Modern, Model # 1SC256 K
Post by: NewAtMag on April 19, 2019, 08:41:10 PM
Ok, the cap replacement is done, along with a new power cord and fuse.

I did not double check the resistance values. I'll save that for a different day (meaning I'll probably never do it).

I also did not clean the pots. Now I wish I had. As I'm playing with the Magnavox tonight, I'm seeing that the volume knob and the treble knob cause static and don't always work in all positions. I saw that a couple squirts of electronics cleaner can help with that. Maybe tomorrow.

One heartbreaking moment during the electronics work today. The amp chassis hole where the power cord used to be was almost big enough to fit my new fuse holder in. I just needed to drill it out a little bigger. I had no idea that my drill bit was going to go through the metal so quickly. It plowed right through the circuit, breaking a terminal strip in half (super-glued back now), and breaking a 100 ohm resistor that's part of the pilot light circuitry. Fortunately, it didn't damage any of the cloth wires or the vacuum tube jacks. I replaced the resistor, and all seems to be functional.

I left the cap can in place, fully stuffed with the old caps. I just cut the terminals and stuck a chuck of epoxy over it to prevent anything from accidentally shorting to the remnants of the terminals. you can see the new electrolytic caps sprinkled throughout the circuit.

All in all, it was successful. No smoke, no flames, not popped fuses. Should be many good years of music left in this old player.
Title: Re: Magnavox Intermezzo - Swedish Modern, Model # 1SC256 K
Post by: Bill on April 20, 2019, 06:26:16 AM
From what I can see from your photos, you did a great job.  It's neat, and you covered all the bases.  The electrolytic caps are well placed and you replaced the two white caps with the two red/orange caps.  Don't feel bad about the drill thing, we are human and we make mistakes.  I'm walking proof!  :)  The other thing you need to know, it takes at least one time of removing the chassis after you get it all back together, bolted into place, and think you are done.  Please take the time to clean all pots/controls, and clean all connectors.  You won't be sorry, you just need to take the time and do it.  It will make things a whole lot better, both now, and down the road.  ;D 

See how easy it was, and fun too.  Now, it's time to apply:  "there is always room for one more."   :) :) ;) ;) ::)

Bill
Title: Re: Magnavox Intermezzo - Swedish Modern, Model # 1SC256 K
Post by: NewAtMag on April 20, 2019, 03:13:36 PM
Thank you, Bill! Yes it was fun! All my recent electronics projects involved circuit boards. Soldering in a point-to-point circuit is like a breath of fresh air. Everything was so easy to get to.

I went to the auto parts store this morning and bought some CRC QD Electronic Cleaner, as I had seen that some people have used it to clean their turntable pots.

I just finished cleaning it thoroughly. I cleaned the pots, the terminals, the speaker leads. I even sanded and cleaned the vacuum tube leads. They went from 100% black to 30% black, 70% silver. I was afraid of working them too much, so I quit before I bent any pins.

The results? I'm stunned. Not only do the controls work flawlessly, but this Magnavox is louder with a booming bass. I had previously turned the bass all the way up. Now the bass knob is at the 75% mark, and it's plenty. And the treble knob makes a very significant difference, whereas before, it really didn't kick in until it was almost maxed out. I'm really surprised by the sound quality and control. A good cleaning was all it took. Thanks for persuading me to take it apart again and clean it up. Lesson learned!

I think I'm done with this restoration. The only remaining problem, that I hadn't mentioned before, and that the pot cleaning didn't take care of, is that the "BAL" control on the back of the amp doesn't completely switch the sound from left to right or vice versa. Maybe it's not supposed to. You can definitely hear more of the sound on one side or the other when you work that control, but not complete isolation. Doesn't matter. It sounds pretty sweet right in the middle, which is where I'll keep it all the time anyway.

I think this restoration is done. Thank you guys for all your help and encouragement! It's good to have a place to go where people are friendly and so dog-gone helpful.

And no, we still don't have room for another.  :) ;)
Title: Re: Magnavox Intermezzo - Swedish Modern, Model # 1SC256 K
Post by: Bill on April 20, 2019, 04:11:23 PM
If you ever want to tackle the balance control just let us know.  And, darn, for not having enough room for "just one more."   ;) ;)

Bill
Title: Re: Magnavox Intermezzo - Swedish Modern, Model # 1SC256 K
Post by: robbo on April 22, 2019, 08:16:32 PM
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Title: Re: Magnavox Intermezzo - Swedish Modern, Model # 1SC256 K
Post by: NewAtMag on April 23, 2019, 07:30:19 AM
.

Whoa! Robbo, thank you! I had not seen this before. I had seen a Sam's sheet for the amp, but never for the entire player. Thank you so much for this!