Posts: 909
Threads: 117
Joined: Jun 2007
Congrats on your fine purchase! Unplug it !!, dont take any chances until new filter caps have been installed!! Playing "russian-roulette" with a vintage original Philco power transformer in that radio could win you the 2008 "duh- award" real fast!! No disrespect intended! That would be a real shame since new filter-caps are easily replaced. A good ol 1 amp fuse inline on one side of the ac cord is also highly recommended. Enjoy your new Philco!!!
Posts: 4,865
Threads: 54
Joined: Sep 2008
City: Sandwick, BC, CA
Ron Ramirez Wrote:Miquelonbrad Wrote:I "reformed" the caps by slowly ramping up the voltage over several hours, and the radio does work, but it will require a tune-up. But that should be easy, as I don't think the chassis has been messed with. Very clean! Tubes still have the dealer decals on them, that match the dealer decal pasted on the back.
That radio did not use electrolytics, all of the caps in the large metal filter can are paper. Paper caps cannot be reformed.
Watch out! Paper caps can and will fail, also, with equally disastrous results. I once had a 96 that still worked, and so I played it...until one day I turned it on, I heard a loud hum and then smoke. Yup...shorted filter which took out the power transformer.
You really, really should replace ALL of the paper caps in that radio if you plan on using it. That is a fine piece of furniture and deserves no less.
I also plan on no less for my somewhat less Grand Philco 96 lowboy, I don't trust condensers that border on 80 years of age, nor resistors either. I had the same thing happen with a Radiola 44, worked but very weakly, tried it a year later and took out the rectifier tube, transformer and chokes are still alright fortunately.
Happy Christmas
Happy New Year
Arran
Texasrocker Wrote:Congrats on your fine purchase! Unplug it !!, dont take any chances until new filter caps have been installed!! Playing "russian-roulette" with a vintage original Philco power transformer in that radio could win you the 2008 "duh- award" real fast!! No disrespect intended! That would be a real shame since new filter-caps are easily replaced. A good ol 1 amp fuse inline on one side of the ac cord is also highly recommended. Enjoy your new Philco!!! 
I don't plan on winning that award! I don't usually play my radios until I have gone through them. I do like to put them on a variac and ramp up the voltage slowly when I first get them, mainly to check to see what works, and what doesn't. If the chassis is in bad shape, then I don't plug it in at all. The Concert Grand will get a going-through, but I first have to finish projects that are already lined up in my work shop. NO starting any new ones, as much as I'd like to!!
As a side note regarding inline fuses, my Philco 37-690 has a large end on the power cord, which has not one, but TWO fuses contained inside. It looks original, but is it?
Brad
Posts: 13,776
Threads: 580
Joined: Sep 2005
City: Ferdinand
State, Province, Country: Indiana
Yes, that AC plug is apparently original. Most 37-116 sets I have seen also have that plug.
--
Ron Ramirez
Ferdinand IN
Posts: 4,865
Threads: 54
Joined: Sep 2008
City: Sandwick, BC, CA
Brad;
That sounds like an after market TV plug from the 1950s or 60s, those were sort of flat, wide, and square shaped, maybe Philco was ahead of their time?
Happy Christmas
Happy New Year
Users browsing this thread: 1 Guest(s)
|
Recent Posts
|
My Philco 37-116 Restore
|
Hello MrFixr55,
Thank you for taking the time to explain. I measured 50 volts where you say. Today the 370 volts at ...dconant — 12:51 PM |
462ron
|
Oh that sucks. It’s something easily overlooked. Hopefully it’s nothing more than a resistor!
Ron462ron — 08:08 AM |
Philco 46-480 Electronic Restoration
|
Just confirmed that you are correct. It’s the function generator. I connected the signal output probe to one of the inpu...jrblasde — 07:52 AM |
Philco 46-480 Electronic Restoration
|
Ouch, you may be right. Yes, it is solid state. It’s the signal output of my oscilloscope.
May be time to crack that ...jrblasde — 07:27 AM |
462ron
|
If you didn’t put a DC blocking cap between the signal generator probe and the plate of the 1st IF it’s possible you ble...462ron — 07:07 AM |
My Philco 37-116 Restore
|
Hi DConnant,
The reason why C127 is isolated from ground is because sets of this vintage did not have the center tap...MrFixr55 — 01:07 AM |
Philco 46-480 Electronic Restoration
|
The shield is on the 6H6.
It was, in fact, a missing jumper to connect the main chassis ground to the RF chassis grou...jrblasde — 10:58 PM |
Zenith H725
|
When dealing with noise on power lines, time to get my Jackery 240 out. Talk about clean can hold a portable am radio ne...David — 08:52 PM |
Zenith H725
|
Arran - I bet you're right probably vinyl, there was no rubber smell when desoldering it, which you often get with the o...EdHolland — 08:23 PM |
Zenith H725
|
Ed;
It was very likely vinyl covered wire given the vintage of the set, there was some rubber/gutta percha wire used ...Arran — 06:34 PM |
Who's Online
|
There are currently no members online. |
|

|