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

RCA 10K Restoration Journal
#15

I must admit I'm a bit lost reading the schematic around the cap pac that ties in with the volume control. The schematic and wiring diagram - even after printing on 11 x 17 paper - are difficult to read and I'm unsure about the voltage at the volume control. The cap pack looks like a tone control to me and I'm not sure how to size the resistors. [I think this is wrong. I've gone over other schematics and checked a reference book. Tone controls are frequently off the audio tubes. So, this is most likely part of the volume control that also filters 9/14/09] 166 volts and 3 milliamps makes 1/2 watt. I guessing that 1 watt resistors would be in order. I can't see how that part of the circuit could draw that much power but I'm a little short of confidence. With 2.5 M total and 970k max where the circuit taps in I'm looking at 65V and 1/4 watt resistors.

Back to the radio servicing book. I haven't had enough experience with the various parts of the circuit to know what to expect for typical voltage and current at the volume control and I'm starting to question what I'm calculating. It's getting late.


Messages In This Thread
RCA 10K Restoration Journal - by g8wayg8r - 07-26-2009, 11:28 PM
Re: RCA 10K Restoration Journal - by jayoungs - 07-27-2009, 10:24 AM
Re: RCA 10K Restoration Journal - by exray - 07-27-2009, 07:02 PM
Re: RCA 10K Restoration Journal - by Dave D - 07-27-2009, 11:58 PM
Re: RCA 10K Restoration Journal - by g8wayg8r - 08-04-2009, 01:27 AM
Re: RCA 10K Restoration Journal - by g8wayg8r - 08-22-2009, 12:56 AM
Re: RCA 10K Restoration Journal - by g8wayg8r - 08-23-2009, 12:51 PM
Re: RCA 10K Restoration Journal - by exray - 08-23-2009, 01:29 PM
Re: RCA 10K Restoration Journal - by g8wayg8r - 08-30-2009, 06:10 PM
Re: RCA 10K Restoration Journal - by codefox1 - 08-30-2009, 06:54 PM
Re: RCA 10K Restoration Journal - by exray - 08-30-2009, 08:50 PM
Re: RCA 10K Restoration Journal - by g8wayg8r - 08-30-2009, 09:31 PM
Re: RCA 10K Restoration Journal - by exray - 08-30-2009, 10:44 PM
Re: RCA 10K Restoration Journal - by g8wayg8r - 09-13-2009, 06:05 PM
Re: RCA 10K Restoration Journal - by g8wayg8r - 09-13-2009, 10:50 PM
Re: RCA 10K Restoration Journal - by g8wayg8r - 09-20-2009, 11:38 PM
Re: RCA 10K Restoration Journal - by g8wayg8r - 09-30-2009, 11:52 PM
Re: RCA 10K Restoration Journal - by g8wayg8r - 11-19-2009, 02:06 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.

>