Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12) x

Thread Closed
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Philco 47-1230 restoration
#16

codefox1 Wrote:I usually replace all the paper and electrolytic caps before I replace the power cord. That way I'm not tempted to power it up or lose track of what I am doing when several sets are being worked on.
Hi,
That might be fine for those experienced in working with a set. But for new restorers replacing all the caps at once might invite trouble.

The bakelite block that the cord is attached to has capacitors inside that must be replaced. You can still do that job with the cord attached at this point. Next time though it may be easier on this block to replace the cord second.

Also for the new restorer, I would suggest that the filters be changed first, then a quick test. At that point you will usually hear some kind of reception. That shows all the circuits on the receiving ends are working. (Colis, tuning capacitor, etc.)

Once you hear it is receiving, power the det down, and begin to rebuild the bakelite blocks, and the free standing caps one, or two at a time. Then briefly test again.

The reason for doing it that way is that sometimes a wiring mistake is made, and rarely a bad part is installed. Changing one or 2 caps at a time makes it easier to see where you made a mistake if the radio sudenly doesn't work. Changing all at once (which some of us with more experience do) is harder to track down where the mistake was made.
Replacing 20 caps, then have a non working set, where do you start looking? It can be done but takes more time to locate the mistake.

Chuck's site has a good tutorial on how to rebuild the bakelite blocks, and data on what is inside them. Each person has their own way to do those. Some completely remove the block for rebuilding. It really isn't necessary in most cases. Removing the hold down bolt to the chassis, and flipping the block on it's side you can rebuild like that. Saves you from removing a lot of wires and components, then reinstalling.

I use a small embossing heat gun that has a 3/8" nozzle, to warm the casing just enough so the tar block comes out in one piece. (Along with the old caps). Don't get it so hot the tar starts to melt. Reinstall new caps, solder them onto the lugs and reinstall the block bolt. NO need to refill the block with tar, glue or anything.

Sorry for long post, let us know how you come along.

PS: That output trans can be saved. When you strip off wires like that, don't use the grab and pull method to strip. It can pull the wire right out of the transformer. Icon_eek
Carefully, cut the insulation off, without pulling on the wire. Now, add a wire to the bare and and solder it. Slip a piece of shrink tubing around your new lead, and shrink it over the solder joint.


Messages In This Thread
Philco 47-1230 restoration - by robertwsimpson - 02-11-2011, 09:09 AM
Re: Philco 47-1230 restoration - by gary rabbitt - 02-11-2011, 02:14 PM
Re: Philco 47-1230 restoration - by TA Forbes - 02-11-2011, 02:37 PM
Re: Philco 47-1230 restoration - by Ron Ramirez - 02-11-2011, 11:11 PM
Re: Philco 47-1230 restoration - by marcapra - 02-12-2011, 12:16 AM
Re: Philco 47-1230 restoration - by Jayce - 02-12-2011, 02:05 PM
Re: Philco 47-1230 restoration - by Ron Ramirez - 02-12-2011, 09:31 PM
Re: Philco 47-1230 restoration - by DeckApe - 02-14-2011, 11:04 AM
Re: Philco 47-1230 restoration - by gary rabbitt - 02-15-2011, 09:08 PM
Re: Philco 47-1230 restoration - by codefox1 - 02-18-2011, 06:01 PM
Re: Philco 47-1230 restoration - by codefox1 - 02-21-2011, 01:37 PM
Re: Philco 47-1230 restoration - by gary rabbitt - 04-22-2011, 01:37 PM
Re: Philco 47-1230 restoration - by Marsupial - 04-22-2011, 02:27 PM
Re: Philco 47-1230 restoration - by Marsupial - 04-22-2011, 02:34 PM
Re: Philco 47-1230 restoration - by gary rabbitt - 04-22-2011, 11:32 PM
Re: Philco 47-1230 restoration - by Marsupial - 04-22-2011, 11:58 PM
Re: Philco 47-1230 restoration - by Marsupial - 04-23-2011, 10:32 AM
Re: Philco 47-1230 restoration - by ipwizard - 04-28-2011, 06:08 PM
Re: Philco 47-1230 restoration - by Marsupial - 04-29-2011, 09:54 AM
Re: Philco 47-1230 restoration - by gary rabbitt - 04-29-2011, 04:07 PM
Re: Philco 47-1230 restoration - by Marsupial - 04-29-2011, 05:58 PM
Re: Philco 47-1230 restoration - by gary rabbitt - 04-30-2011, 01:22 AM
Re: Philco 47-1230 restoration - by Marsupial - 04-30-2011, 11:45 AM
Re: Philco 47-1230 restoration - by ipwizard - 05-01-2011, 12:03 AM
Re: Philco 47-1230 restoration - by Marsupial - 05-01-2011, 12:48 AM
Re: Philco 47-1230 restoration - by Ron Ramirez - 05-01-2011, 07:54 AM
Re: Philco 47-1230 restoration - by ipwizard - 05-01-2011, 10:55 PM
Re: Philco 47-1230 restoration - by Ron Ramirez - 05-05-2011, 09:04 AM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Model 70 Cabinet Trim
musar , Well if you have any more questions feel free to post away . Sincerely Richardradiorich — 08:56 PM
Model 70 Cabinet Trim
Although I have not made any cabinets or cabinet parts for a couple of years, I still have some parts left over, includi...Steve Davis — 06:26 PM
philcorepairbench.com - shadow-meter
Thanks Ron.fenbach — 02:43 PM
Model 70 Cabinet Trim
Thank you, Gary. Before making my original post, I had clicked on "Steve Davis Cabinets" only to find that it...musar — 02:25 PM
philco predicta
Welcome to the Phorum, cgl18! I am not your resource for television repair, but lots of friendly help is available here...GarySP — 02:12 PM
Model 70 Cabinet Trim
Welcome to the Phorum, musar! You can send Steve Davis a private message (PM). The site is at the top of the Home page...GarySP — 02:09 PM
Model 70 Cabinet Trim
How do I contact him? The only contact information for him I could find when searching online was a telephone number th...musar — 10:38 AM
philco predicta
Hello, good afternoon, I would like to ask what the possible problem could be if I don't have an image on the screen. I ...cgl18 — 10:19 AM
Philco model 38 code 121 not receiving signal.
So one last question before I finish this radio. Regarding the speaker and output transformer. I salvaged the original o...Stormlord5500 — 09:31 AM
462ron
It’s on the bottom of the homepage of our Philcoradio.com homepage! Ron462ron — 07:20 AM

[-]
Who's Online
There are currently no members online.

>