webcor model 1138-1 Concerto

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webcor model 1138-1 Concerto

Post by fixinmyphono on Thu Sep 29, 2011 6:28 pm

Anyone have any info on a webcor model 1138-1? Thanks Doug


Last edited by fixinmyphono on Sat Oct 08, 2011 9:53 pm; edited 1 time in total
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Re: webcor model 1138-1 Concerto

Post by fixinmyphono on Tue Oct 04, 2011 11:16 pm

the next patient
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Re: webcor model 1138-1 Concerto

Post by fixinmyphono on Sat Oct 08, 2011 9:59 pm

Looked at the amplifier on it today should be an ok fix with caps and resistors.Has 3 speakers so Im thinkin its stereo. I've never heard of the concerto model.Cant find anything on it no adds or photos at all.The wood is ok but has some flaws inside.Should be able to fix it up in time. More pics tomorrow....Doug
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Re: webcor model 1138-1 Concerto

Post by Resistance is Futile on Sat Oct 08, 2011 10:46 pm

Newspaper of 1955 says model is Hi Fi (so its not a stereo) the turntable tone arm is to heavy also. Two or three Speakers were a selling point for HI FI sets.


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Re: webcor model 1138-1 Concerto

Post by fixinmyphono on Sat Oct 08, 2011 10:50 pm

Ah ok thanks for the info I cant even find a picture of it. Doug
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Re: webcor model 1138-1 Concerto

Post by Resistance is Futile on Sat Oct 08, 2011 11:13 pm

Sams schematic set 356 folder 17
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Re: webcor model 1138-1 Concerto

Post by fixinmyphono on Sat Oct 08, 2011 11:16 pm

wow cool ty
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Re: webcor model 1138-1 Concerto

Post by fixinmyphono on Sun Oct 09, 2011 2:44 pm

Ok question time this big capacitor reads.4mfd 25 wdc Is it paper or electro? Thanks Doug
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Re: webcor model 1138-1 Concerto

Post by fixinmyphono on Sun Oct 09, 2011 2:51 pm

Another question Im not sure what this one is the colors are silver yellow yellow red blue or the reverse? What olms is it and it is a resistor right? Forgive my not knowing ty Doug


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Re: webcor model 1138-1 Concerto

Post by fixinmyphono on Sun Oct 09, 2011 2:55 pm

Yet another question this one though hard to see I think is a .05 400 volt cap but im not sure just at the end of the blue wire and beneath it Ty Doug
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Re: webcor model 1138-1 Concerto

Post by Resistance is Futile on Sun Oct 09, 2011 3:16 pm

Posting the schematic would help to reference things.
Setting that aside, Top Picture-usually low voltage caps are paper as they are used in the signal paths. If it is paper then the line around the cap indicates the outer foil side and usually is for shielding from noise, otherwise if its a electrolytic it indicates polarity. What does it connect to?

The bottom picture - looks like what is called a bumble bee cap, they are notorious for going bad and should be replaced.

The one in the second picture looks like a cap, but could be a dog-bone cap. Remove one lead from circuit and measure, if no reading on the ohms scales, its a cap, (or an open resistor.)

Usually Caps of that type are hollow while resistors are solid.
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Re: webcor model 1138-1 Concerto

Post by fixinmyphono on Sun Oct 09, 2011 4:20 pm

The one in the top photo goes between speakers and is hard to read could only make out .4 mfd 25 wdc
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Re: webcor model 1138-1 Concerto

Post by fixinmyphono on Sun Oct 09, 2011 7:25 pm

fixinmyphono wrote:Ok question time this big capacitor reads.4mfd 25 wdc Is it paper or electro?It also says outside capacitor and has a black band around the one end. Thanks Doug
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Re: webcor model 1138-1 Concerto

Post by Bill Cahill on Mon Oct 10, 2011 10:19 am

That's a paper tone cap on speakers. I'd replace it. .39, or, .47 at 200volts is fine for this use.
Bill Cahill

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Re: webcor model 1138-1 Concerto

Post by willy3486 on Mon Oct 10, 2011 10:57 am

There is a good article on the color codes of caps and resistors at
http://www.vcomp.co.uk/components/components.htm

I printed it off to have on my workbench. I can do the resistors but I forget how to do the caps.

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Re: webcor model 1138-1 Concerto

Post by fixinmyphono on Mon Oct 10, 2011 6:08 pm

the paper cap isnt an electro?Could I use a 47 uf at 250 volt electro cap?Or a .47 630 volt paper cap?
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caps

Post by fixinmyphono on Mon Oct 10, 2011 6:09 pm

willy3486 wrote:There is a good article on the color codes of caps and resistors at
http://www.vcomp.co.uk/components/components.htm

I printed it off to have on my workbench. I can do the resistors but I forget how to do the caps.
Cool ty site saved!
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Re: webcor model 1138-1 Concerto

Post by Resistance is Futile on Mon Oct 10, 2011 6:14 pm

Somthings wrong here, looking at SAMS FOLDER the diagram of tube and components everything is on the tube side of the board, is this all handwired? Or printed circuit? On the actual phonograph?
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Re: webcor model 1138-1 Concerto

Post by fixinmyphono on Mon Oct 10, 2011 6:17 pm

Resistance is Futile wrote:Somthings wrong here, looking at SAMS FOLDER the diagram of tube and components everything is on the tube side of the board, is this all handwired? Or printed circuit? On the actual phonograph?

Hand wired but its supposed to be right and it seems to match up for the most part
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Re: webcor model 1138-1 Concerto

Post by fixinmyphono on Tue Oct 11, 2011 8:56 pm

Put new wires in the tone arm tonight.
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Re: webcor model 1138-1 Concerto

Post by fixinmyphono on Tue Oct 11, 2011 9:04 pm

Making a new rubber bumper to go on the velocity trip using a piece of wire casing with a piece of heat shrink tubing on the outside of it to get the right diameter.
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Re: webcor model 1138-1 Concerto

Post by fixinmyphono on Tue Oct 11, 2011 9:10 pm

The actuating pawls tip is worn off, wont catch the velocity trip anymore I need to take it out and grind the tip to make a new edge once more.
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Re: webcor model 1138-1 Concerto

Post by fixinmyphono on Tue Oct 11, 2011 10:26 pm

Just found the part im looking for to fix this at the voice of music .com how cool is that!!!

http://www.thevoiceofmusic.com/catalog/part_detail.asp?PNumberBase=1413




fixinmyphono wrote:Making a new rubber bumper to go on the velocity trip using a piece of wire casing with a piece of heat shrink tubing on the outside of it to get the right diameter.
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Re: webcor model 1138-1 Concerto

Post by fixinmyphono on Thu Oct 13, 2011 9:38 pm

Worked on the actuating pawls tip hopefully it will work re-assembly has begun. Doug
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Re: webcor model 1138-1 Concerto

Post by fixinmyphono on Sat Oct 15, 2011 2:14 pm

Ordered the caps and resistors.Ordered the rubber bumper for the velocity trip, rubber feet for the base,some wire to replace some exposed wires,So when it comes Ill be a busy bee for sure....
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Re: webcor model 1138-1 Concerto

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