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

Replacing Beam of Light changer - wiring
#1

I've sent my Beam of Light changer from my 42-1010 to the local repair shop to have the motor, idler wheels and bearings serviced. In the mean time, I'd like to substitute a changer with a ceramic cartridge. Can the audio output of the substitute changer be plugged into the jack on the 42-1010's phono transformer without any other circuitry changes?
#2

Jon in some case Philco used magnetic cartridges and in other cases ceramic cartridges. Most of the ones that had the magnetic cartridges had a step up transformer to boost the signal output. You can find these on the 46-1209. 47-1230 etc. On my BOL changers they also have a step up transformer. I think most ceramic cartridges did not require the step up transformer so you should be able to bypass the step up transformer and connect directly to the radio chassis. Someone that could really answer this question would be a guy up in Canada named Syl. Here is a link from Chucks site, http://www.philcorepairbench.com/links.htm it is called Old Radioz .
#3

Syl Vanier has apparently shut down his website. However, West-Tech Services recently announced that they are now offering Beam of Light repair.

Jon - who do you send your Beam of Light changers to for repair? Just curious. I was not aware of anyone else who was willing to tackle those beasts.

But to answer the question...the Beam of Light models include a one-tube phono preamp. If your substitute changer has a ceramic cartridge, this could cause the audio to be too loud/distorted. However, the output of a magnetic cartridge will work just fine. I know this from firsthand experience - a client once asked me to replace the Beam of Light changer in her 1942 Philco 42-1008 to a more modern changer, so I used a 3-speed BSR changer with a magnetic cartridge, and retained the input transformer. It worked very well.

49Stude - good to see you back on here. Icon_smile

--
Ron Ramirez
Ferdinand IN
#4

Syl could rattle off the mv output of magnetic vs ceramic so on that area I was not sure. On my second 41-611P model, it has a Garrad turntable to replace the BOL http://home-and-garden.webshots.com/albu...5367xIGYeT and they tapped into the step up transformer (has a shure cartridge, magnetic type) but on my RCA V301 they replaced the old phono (ceramic cartridge) and put a Collaro phono unit with the GE magnetic catridge and had to put a 1 tube pre-amp unit unit then plugged the output of the pre-amp into the chassis phono input. I am also curious on the BOL repair since some of my models have BOLs and I know some of them have some pot metal that makes it tough to repair. I had just planned on converting them to modern Collaro units and keeping the BOL's and putting them in storage.
#5

My changer is at For Your Listening Pleasure in Binghamton, NY. I'm having them do the mechanical resotration of the changer. As for the electronics, I get good sound reproduction from the original setup, although the photocell output is a little weak. Sometime at a later date, I'll replace the photocell.




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
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
Model 70 Cabinet Trim
Steve might have some trim left. Not sure he is making anything.morzh — 06:12 AM
Model 70 Cabinet Trim
Hello musar, First all welcome to the forum and yes that is true that steve stopped making trim . Sincerely Richar...radiorich — 12:13 AM
Model 70 Cabinet Trim
I have recently come into possession of a Model 70.  The trim around the base needs to be replaced.  If this were years ...musar — 12:07 AM
philcorepairbench.com - shadow-meter
Anyone know of a way to recover these files from the repair bench? Thanks. fenbach — 11:16 PM
Philco model 38 code 121 not receiving signal.
That's true. Of course If I were to get a vtvm I'd probably have to sink money in to it to get it working right. Probabl...Stormlord5500 — 08:44 PM
Philco model 38 code 121 not receiving signal.
A DMM is good enough. One rarely has to measure indictance, but if you do, short of getting a serious LCR meter (I hav...morzh — 07:35 PM
Testing a speaker and output transformer Trutone A2-G
You guy's are right on. I found a broken wire on the speaker plug that I replaced and all is well now. Have better volu...murf — 03:43 PM
Philco model 38 code 121 not receiving signal.
I need to get a vtvm. I think that little component tester is just more accurate. Plus it shows the inductance which is ...Stormlord5500 — 03:07 PM

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

>