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 Post subject: Re: 1935 Crosley 555 Restoration Question
PostPosted: Apr Fri 13, 2012 10:10 pm 
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Thanks Curtis,
I also removed the extra can on top,found out its from a Philco!! The original can has white powder coming out of it!!

John


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 Post subject: Re: 1935 Crosley 555 Restoration Question
PostPosted: Apr Fri 13, 2012 11:03 pm 
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radiojohn wrote:
The original can has white powder coming out of it!!
Oh no! You've let out the secret white powder! :shock:

Just kidding. Heaven only knows what that stuff might be. :)

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 Post subject: Re: 1935 Crosley 555 Restoration Question
PostPosted: Apr Fri 13, 2012 11:46 pm 
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Lol!! I think its just the wet substance that used to be inside the can!! The Radio is coming along I have both The can Electrolytics changed and most of the regular caps!! Ill post pictures soon.

John


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 Post subject: Re: 1935 Crosley 555 Restoration Question
PostPosted: Apr Sun 15, 2012 2:24 am 
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Is it Ok to use terminal blocks rather than terminal strips to hook wires and caps to ground?


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 Post subject: Re: 1935 Crosley 555 Restoration Question
PostPosted: Apr Sun 15, 2012 2:28 am 
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radiojohn wrote:
Is it Ok to use terminal blocks rather than terminal strips to hook wires and caps to ground?
If they are supposed to go to ground and end up going to ground when you are done there should be no difference.

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 Post subject: Re: 1935 Crosley 555 Restoration Question
PostPosted: Apr Sun 15, 2012 2:49 am 
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Thanks again Curtis!! :lol:


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 Post subject: Re: 1935 Crosley 555 Restoration Question
PostPosted: Apr Sun 22, 2012 3:28 pm 
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Almost ready to fire up this Crosley, but I noticed a little copper wire is sticking out of the top plate of the transformer!!
Should I be worried about this? I am getting good reading from the transformer also!!

John


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 Post subject: Re: 1935 Crosley 555 Restoration Question
PostPosted: Apr Sun 22, 2012 5:14 pm 
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radiojohn wrote:
Should I be worried about this? I am getting good reading from the transformer also!!
Which transformer (power, IF, audio?). Until you know what it is I believe it is a concern.

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 Post subject: Re: 1935 Crosley 555 Restoration Question
PostPosted: Apr Sun 22, 2012 5:31 pm 
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Its the power Transformer!! the Heavy one!! Sorry for the blurry pic. The gold dot I have circled is what im talking about!! Do I need to get a new Transformer?


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 Post subject: Re: 1935 Crosley 555 Restoration Question
PostPosted: Apr Sun 22, 2012 5:35 pm 
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radiojohn wrote:
Its the power Transformer!! the Heavy one
It is a little hard to tell because the picture is blurry, but that would definitely be a concern and good catch on your part. It may be nothing, but if I was you I would take loose the bolts that hold that top cover in place and pop that top cover off to see what is going on.

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 Post subject: Re: 1935 Crosley 555 Restoration Question
PostPosted: Apr Sun 22, 2012 5:38 pm 
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Will do, thanks Curtis


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 Post subject: Re: 1935 Crosley 555 Restoration Question
PostPosted: Apr Sun 22, 2012 7:08 pm 
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Hard to tell from picture, but you can remove all the tubes, check carefully if AC on each plate connection of rectifier is about equal, filament voltage exists, and the transformer does not get hot after a half hour or so. Some transformers do have a center tap from filament attached to the core, don't know without transformer, but easy enough to measure from any windings. I doubt if it would be connected where you spotted it though. But 1935 was long long ago. If you need to, as suggested, remove the bells gently and look further. Use WD40 or whatever to ease the removal of the nuts, and soak the nuts and bolts in oil before re-assembly. You can use appropriate shrink wrap to firm up the insulation of the leads should you deem it needed. If everything checks out, great time to strip and repaint the bells!

Best of luck!


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 Post subject: Re: 1935 Crosley 555 Restoration Question
PostPosted: Apr Mon 23, 2012 4:12 am 
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This is what I found in the transformer!! I think its ok!! Maybe just a center tap!! I did not smell any burnt smell from the transformer!! Any opinions?? Sorry for the blurry pic my camera is not that good!!


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 Post subject: Re: 1935 Crosley 555 Restoration Question
PostPosted: Apr Mon 23, 2012 5:30 am 
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radiojohn wrote:
This is what I found in the transformer!! I think its ok!! Maybe just a center tap!! I did not smell any burnt smell from the transformer!! Any opinions?? Sorry for the blurry pic my camera is not that good!!
Sorry, I really can't tell what is what, but I get the impression it really is a wire connected to the windings in some way. If so, I would tape it up and tuck it back up against the windings where it won't get pinched under the bell housing when you reinstall it and won't short to anything else. It may still be nothing or just some stray unconnected wire, but pinched under the bell housing just isn't normal.

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 Post subject: Re: 1935 Crosley 555 Restoration Question
PostPosted: Apr Mon 23, 2012 11:39 am 
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That wire is for the "sheild" wrap in the tranformer, does not connect to anything other than that, I have one on this stancor here, and there was one on the truetone D 699 original transformer I installed. I read it somewhere, got to find it. :?

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 Post subject: Re: 1935 Crosley 555 Restoration Question
PostPosted: Apr Mon 23, 2012 12:54 pm 
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glasdave wrote:
That wire is for the "sheild" wrap in the tranformer, does not connect to anything other than that, I have one on this stancor here, and there was one on the truetone D 699 original transformer I installed. I read it somewhere, got to find it. :?
So is it supposed to connect to the case? I've seen some with that sort of thing but I think they all had a big copper strap they connected to. I had not seen a wire just hanging out of the bell housing.

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 Post subject: Re: 1935 Crosley 555 Restoration Question
PostPosted: Apr Mon 23, 2012 1:38 pm 
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It is indeed to ground the internal shield.

Make sure the grounds of the new electrolytic capacitors go to where the can cap was grounded in order to prevent a ground loop from occouring. Easiest way to do that is if the original can cap is still installed just solder the grounds (or a single wire if capacitors are soldered to terminal strips) of the capacitors to one of the ground tabs on the can capacitor.


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 Post subject: Re: 1935 Crosley 555 Restoration Question
PostPosted: Apr Mon 23, 2012 2:40 pm 
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This is the kind of transformer case connection I am used to seeing.
Attachment:
Transformer_with_strap.JPG
Transformer_with_strap.JPG [ 60.38 KiB | Viewed 336 times ]
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 Post subject: Re: 1935 Crosley 555 Restoration Question
PostPosted: Apr Mon 23, 2012 3:07 pm 
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Thanks for all the replys!! You guys are the best!! :D I am just about to finish up on this radio I am pretty sure that this transformer on the radio is good!! I will post more pics when it is finished!!

Thanks again,
John


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 Post subject: Re: 1935 Crosley 555 Restoration Question
PostPosted: Apr Mon 23, 2012 3:41 pm 
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Here is an electrostatic shield connection where they did something a little more reliable than pinching a wire. This was under the bell housing.
Attachment:
Transformer_Electrostatic_Shield_Connection.JPG
Transformer_Electrostatic_Shield_Connection.JPG [ 20.86 KiB | Viewed 332 times ]
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