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 Post subject: Re: Philco Seventeener II
PostPosted: Jul Fri 07, 2017 12:42 am 
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Joined: Jan Sun 18, 2015 5:01 am
Posts: 796
Location: Waxahachie Texas
Somebody mentioned a diode dropper that might try. It does look like the 25W 60 ohm resistor is too small. Might go with a 50W if the diode doesn't work.

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 Post subject: Re: Philco Seventeener II
PostPosted: Jul Fri 07, 2017 5:54 am 
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Joined: Jan Sun 18, 2015 5:01 am
Posts: 796
Location: Waxahachie Texas
OK, tonight I pulled the main board and removed L14. Sure enough I found a wire broken. It came from the top of the coil down the side and to the terminal lug. It was broken in the middle. I unwound 1 coil and soldered it to the terminal. I then coated the coil with super Corona dope to secure the windings. Then I re-wrapped the coil with some yellow tape.

While I had the main board out, I checked all the other coils and they were good. The yellow tape had fallen off the other 2 so they got the dope and tape treatment.

I then pulled L15 again because I couldn't adjust the slugs. I think they were glued in place. I used the heat gun and applied just enough heat to loosen the slugs. After it cooled off the slugs could still be adjusted. I reinstalled it and the main board.

I also removed the filament dropping resistor and installed a 1N5408 diode in its place.

I reassembled it and turned it on. I got a picture but still no audio.

I then just started to twiddle the slugs on some of the audio coils. Viola! Real good clear audio. The picture and audio on this set is amazing. It's the best TV I've had so far!


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 Post subject: Re: Philco Seventeener II
PostPosted: Jul Fri 07, 2017 6:02 pm 
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Joined: May Thu 14, 2015 4:15 pm
Posts: 328
Location: Dallas, TX
Great progress on this!

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 Post subject: Re: Philco Seventeener II
PostPosted: Jul Mon 10, 2017 3:48 am 
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Joined: Jan Sun 18, 2015 5:01 am
Posts: 796
Location: Waxahachie Texas
Thanks. I'm watching Kolchak right now.

I've been working on the cabinet this weekend. Pictures to follow tomorrow.

Here are a couple. The first one is of the HV cage. I coated the fly back with several heavy coats of Super Corona dope to seal the cracks and to keep the wax from breaking off.

And a picture of the 2A Slo-Blo fuse I added.


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 Post subject: Re: Philco Seventeener II
PostPosted: Jul Wed 12, 2017 11:16 pm 
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Joined: Jan Sun 18, 2015 5:01 am
Posts: 796
Location: Waxahachie Texas
The yoke cover is in sad shape. The back face is completely crumbled. The centering ring and holder is separated.

My buddy thinks he might have a good one for me but it won't be till the weekend for him to see. So I decided to make one. I was going to use the plastic approach like Bob Andersen did but couldn't find the right plastic. So I made one with the materials I had at hand. I had some 1/16 thick phenolic, some 1/64 plywood, some 1/32 plywood, and some PVC sprinkler pipe that I use when re-stuffing E-caps.

I first drew it out using my CAD program. Then printed out the parts and tacked them onto the phenolic. I cut them out and filed and sanded them to shape. Once the rings were made I decided that 2 layers of 1/64 plywood would work as the "rims" with the butt joints 180 degrees apart.

For the "clamping" part I used some PVC sprinkler pipe but the O.D. was just a little too big and it has a wall thickness of 1/16 inch. I thought that that might be too thick and it needed to be 1/32 wall thickness. I rotated a 1 inch long piece up against my disc sander and sanded down the pipe to 1/32 wall. It is easier than you think. Just have to keep checking your progress.

I then used some super glue to glue on the large rim, then the other rim on top of the first. I soaked the super glue down the joint between the two pieces. I then sanded it down to the correct height and drew a 1/8 line along the edge for the tabs. The tabs are 3/8 wide 90 degrees apart. I used my Dremel with a 1/2 sanding drum to sand away that 1/8 inch between the tabs. A small hand file was used to get the corners of the tabs. I then used some 15 minute epoxy to form a fillet along the inside edge for strength.

I did the same for the centering ring holder portion.

I drilled 1/8 holes in the sprinkler pipe every 3/8 inch to from the fingers. I then used a #11 blade in my hobby knife to cut the slots. This was then epoxied in place.

The wooden parts were given a soaking of super glue to seal them, a light sanding and then some primer. Again some light sanding and some gloss black will complete the assembly. The black is drying as I type.


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 Post subject: Re: Philco Seventeener II
PostPosted: Jul Wed 12, 2017 11:20 pm 
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Location: Waxahachie Texas
The rest of the photos.


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 Post subject: Re: Philco Seventeener II
PostPosted: Jul Fri 14, 2017 3:00 am 
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Joined: Jan Sun 18, 2015 5:01 am
Posts: 796
Location: Waxahachie Texas
The paint is dry and then I installed the centering ring assembly. There are 2 small tabs on the brass parts that fit into the square cutouts. The cutouts are positioned so that the tabs are inserted into those slots they maintain some pressure on the centering rings. While this worked I installed an "O" ring to apply some more pressure. Worked well.

I then installed the chassis into the cabinet and installed the front panel. Next up is to do an alignment.


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 Post subject: Re: Philco Seventeener II
PostPosted: Jul Sun 16, 2017 3:54 am 
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Joined: Jan Sun 18, 2015 5:01 am
Posts: 796
Location: Waxahachie Texas
I finished with the 4.5MC and audio alignment.
I installed the back and all that's left is to do is refurb the top knobs.


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 Post subject: Re: Philco Seventeener II
PostPosted: Jul Sun 16, 2017 4:40 pm 
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Joined: Jan Sat 16, 2016 10:03 pm
Posts: 304
That's a nice piece of history. You did an amazing job.


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 Post subject: Re: Philco Seventeener II
PostPosted: Jul Sun 16, 2017 8:32 pm 
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Joined: Jan Sun 18, 2015 5:01 am
Posts: 796
Location: Waxahachie Texas
clsoca wrote:
That's a nice piece of history. You did an amazing job.


Thank you.

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 Post subject: Re: Philco Seventeener II
PostPosted: Jul Thu 20, 2017 5:50 pm 
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Joined: Jan Sun 18, 2015 5:01 am
Posts: 796
Location: Waxahachie Texas
Well, it is finished. Well almost. My buddy is looking for an antenna that goes into the handle. One of them has been pulled out. The other thing is I want to put some felt under the knobs on the top of the TV. Some before and after pictures.


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 Post subject: Re: Philco Seventeener II
PostPosted: Jul Thu 20, 2017 5:52 pm 
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Joined: Jan Sun 18, 2015 5:01 am
Posts: 796
Location: Waxahachie Texas
More.


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