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

Restoration of Marconi 549. There are problems with the turntable ...
#1

Hello everybody . I am engaged in the restoration of a very rare English radio console Marconi 549 1937. I came across her by chance at a Ukrainian auction, I was very surprised, because I can't understand how she could get here. ) Bought and is now restoring. I restored the radio and I enjoy the quality of reception, but there was a problem with the player - the motor does not work.
       
The motor windings do not heat up, there is no odor, breaks or short circuits, but the motor rotor rotates jerkily and unevenly and stops at the lowest load. And this when connected to a network of 220 volts. And when connected to a voltage of 130 volts (since it was connected) does not work at all. I have never dealt with engines of this type and therefore a little embarrassed by this situation. Replaced the starting capacitor - the same, no changes in operation.
           
Does anyone have experience in repairing engines of this type with Foucault currents and does anyone have a wiring diagram for such engines? I will be especially good for a hint where you can go to the schemes of English radios and Marconi 549 model. Thanks .

Old Tube Radio Online Museum / Музей ретро радіо
https://www.youtube.com/user/RadioSvit?d...lymer=true

Sincerely Peter
З повагою Петро




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Cannot Adjust an IF Transformer’s cores
Outstanding work indeed. I wish I could come up with solutions like this.slford310 — 11:16 PM
Cannot Adjust an IF Transformer’s cores
The abilities of our 'Phorum Pholks" never ceases to amaze me! Fantastic fabrication, Joseph! I'm waiting now for...GarySP — 08:27 PM
PT-6 antenna connections
Thanks. I never realized that was a notch noted in the schematic as described. I’ll recheck my wiring.bridkarl — 08:13 PM
Cannot Adjust an IF Transformer’s cores
Thank you! I was quite new to the Phorum when I started this post, so I feel like it might be advantageous to publish a ...jrblasde — 08:07 PM
PT-6 antenna connections
Notice in the schematic the notch at the bottom of the antenna coil is between pins 3 & 4. Yes, pin 6 of the 7C6 is...RodB — 07:34 PM
bridkarl
I have two PT-6 chassis. On both there is a blue wire that runs from the above chassis transformer to pin 6 of 7C6. So t...bridkarl — 07:23 PM
Cannot Adjust an IF Transformer’s cores
Joseph, now you are an engineer!!RodB — 06:37 PM
PT-6 antenna connections
Hi, reading your explanation I can see the confusion. If you take it one connection at a time it should result in a desi...RodB — 06:34 PM
Cannot Adjust an IF Transformer’s cores
It works! I received the PCBs this morning in the mail, and put everything together. I reused the base from the original...jrblasde — 04:32 PM
PT-6 antenna connections
I seem to have lost my way on this PT-6. I see the antenna aerial transformer schematic - I’m reading pins 1 through ...bridkarl — 12:30 PM

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

>