Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12, 2025) x

Thread Closed

Parts
#12

Hi Nooch,

When you did power it up and received "snow" did you hear a "rushing waterfall" sound through the speaker?
Do you hear any hum? Was the screen completely lit with the "Snow" with good brightness?

If this set has been used recently, continue using it. It would have been a good idea to "form" the electrolytic filter capacitors by slowly applying power through a "variac" (a variable output transformer), slowy increasing power from about 20 volts to full 20 Volts over a period of time. However, you already powered it up. If no smoke, good.

Barring the ability to service this yourself, you can try to run it, but do not leave the unit unsupervised. If the picture starts shrinking, especially horizontally, turn it OFF IMMEDIATELY

There are 4 possible signal sources that will allow you to actually watch this TV:

1. Your Cable Box should have an "RF Output". This This RF Output is for the old analog NTSC Standard which was replaced with the new digital ATSC Standard. To use this, you just need a length of Coas with "F Connectors and a "matching transformer that accepts the coax on one end and has 2 spade lugs to connect to the 2 "ANT" screws on the TV.
2. If you still have a working VCR and tapes, you can connect it to the TV using its RF Output
3. A "Digital Convertor" is available that will allow you to receive "over the air" Digital TV on an analog TV. They currently go for about $50 - $60. When the nation switched to digital TV, this obsoleted millions of analog TV sets amid much public outcry. The government issued cupons for free digital convertors to resolve this.
4. an RF convertor that will allow connection to a DVD Player. Very few if any free standing DVD players had RF outputs.

Give it a try. The set should still be serviced. you can get a vintage book on TV Servicing for the amateur from eBay. Some warnings (and forgive me for being repetitive):

Dangerous voltages- The TV employs voltages that can give you a dangerous or deadly shock, even after being off for a period of time. Capacitors are like little rechargeable batteries. Even if the shock is not deadly, your pulling away from the shock could cause to bang a hand or fall, causing further injury.

Several tubes in the set get extremely hot, such as the Horizontal Output tube, the damper and if a transformer powered set, the rectifier.

One of the biggest dangers is if the CRT (Picture Tube) is struck or falls out of the mount (that happened to me once) Older TVs that have a "window" in front of the tube have no integral implosion protection. If the bell or face of the tube is struck, it will shatter into many pieces. The bigger the tube, the bigger the danger. When I was a kid, I was working on our 1953 DuMont. This had a 21" 5 degree Picture tube. The thing was massive. I had the window out of the TV and for some reason, the tube fell out of its mount and imploded. There was glass from one end of the basement to the other (and this was a big house). I was standing at the side of the set. If I was standing in front or behind the set, I would not be typing this. I would be wearing dark glasses selling pencils on the street corner.

This is not stated to discourage you but a healthy respect for these things is necessary.

If you find it, please list the complete model and chassis number. The Schematic may be on the web somewhere. Take pictures of the set from the front, with the back on and with the back off. This will be helpful.

I have a list of TVs that I must tackle:
My Late Mom In Law's (a wonderful person) 1965 RCA CTC24 Color TV from my wife's childhood (last of the RCA "roundies")
A 1947 Admiral 24A125 10" TV Street Find (I took this but could not fit the RCA CTC7 color roundie that they were also throwing out
A 1947 RCA 721 given by a friend
My Grandparent's 1951 DuMont RA113
A 1956 RCA 14" Potable.
2 1958 17" RCA Portables.

And my bucket list project, a 1964 Lincoln Continental convertible, 4 Doors!

"Do Justly, love Mercy and walk humbly with your God"- Micah 6:8
"Let us begin to do good"- St. Francis

Best Regards, 

MrFixr55


Messages In This Thread
Parts - by Nooch - 01-22-2023, 02:11 PM
RE: Parts - by morzh - 01-22-2023, 03:31 PM
RE: Parts - by Nooch - 01-22-2023, 06:40 PM
RE: Parts - by morzh - 01-22-2023, 07:18 PM
RE: Parts - by MrFixr55 - 01-22-2023, 07:28 PM
RE: Parts - by Nooch - 01-22-2023, 08:09 PM
RE: Parts - by David - 01-22-2023, 08:25 PM
RE: Parts - by morzh - 01-22-2023, 08:43 PM
RE: Parts - by Nooch - 01-22-2023, 09:28 PM
RE: Parts - by MrFixr55 - 01-22-2023, 09:56 PM
RE: Parts - by Nooch - 01-23-2023, 02:00 PM
RE: Parts - by MrFixr55 - 01-23-2023, 05:28 PM



Users browsing this thread: 2 Guest(s)
[-]
Recent Posts
Philco 71 Code 125
Technically, that's C-. B- is chassis ground. The resistor between chassis ground and the HV center tap makes the HV c...MrFixr55 — 11:24 PM
54C Cabinet Refinish
hello Roy, I’d follow Arran’s suggestion and use automotive gasket material, which I keep around for situations like th...radiorich — 10:22 PM
Philco 71 Code 125
This might be one of those cases where it's a ground to an AC voltage and B- to DC.RodB — 08:22 PM
Philco 71 Code 125
Really Rod? I know you would not steer me wrong but AI say this is a short circuit? What if I moved the 6 volt center ta...dconant — 06:40 PM
54C Cabinet Refinish
Roy; Personally I would have left the asbestos alone if it were my set, but you can find a modern substitute that som...Arran — 04:51 PM
Philco 71 Code 125
Looks like that might be the B- buss, so that would be correct.RodB — 01:32 PM
Philco 71 Code 125
I noticed on the code 121 schematic the center tap for the 6 volt winding and hv winding are tied together. Is this corr...dconant — 12:16 PM
Philco 45-6365 Universal IFT Instruction Manual
The Philco Parts Catalog for 1942 shows it as usable for 175 kHz, 260 kHz, and 465 kHz. The instructions will show how t...DaleHCook — 11:19 AM
Stromberg Carlson 1500 Squeal
Hello Rob, I agree with you—I have one here at my house that I need to check out. It’s way over-engineered just to make...radiorich — 11:05 AM
My Atwater Kent 84
Well getting around to restoring my AK84. Mike was a big part in me being able to snatch this one a few years ago. I won...462ron — 10:57 AM

[-]
Who's Online
There are currently 1778 online users. [Complete List]
» 1 Member(s) | 1777 Guest(s)
Avatar

>