Repairing and Restoring Tube Radios - part 3

Posted by admin
October 30, 2007

This is for the electronics geeks out there. I am repairing and restoring an old Marconi model 220 tube radio and I thought I would make kind of a do-it-yourself documentary to share my little hobby with everyone. In part 3, we do a little electronics theory as we learn about rectifiers and filter capacitors, then we replace several capacitors and listen to the cleaned up sound.

Duration : 0:9:33


Electrics

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Comments
Comment by Grantiose on November 2, 2007 @ 6:43 pm

Great series!..I am …
Great series!..I am just starting out in this hobby..a real greenhorn..Your instruction is excellent!……from a fellow Canuck on the West Side!

Comment by mrgnomeman on November 5, 2007 @ 10:40 pm

I’m looking forward …
I’m looking forward to seeing part 4

I’ve past old radios in second hand stores and wondered what is would take to see (hear) these old boys in action once more.

Thanks for these videos.

Comment by BillBlaze on November 26, 2007 @ 2:03 am

Pretty good. I …
Pretty good. I have been tinkering with restoring tube radios for a few years with mixed results. (Usually just replace the paper caps!) When you get a complete series, you should sell them in DVD form. Let me know when you do!
BillBlaze

Comment by vinniecorbit on December 18, 2007 @ 2:45 am

Your newly …
Your newly capacitorized radio is cristened with Daydream Believer and Love Isn’t Always On Time! :O) It’s a good idea to spray the pins of your tubes with contact cleaner and insert them a few times in the socket, regardless of how clean they look.

Comment by biggestdigger on April 8, 2008 @ 9:39 pm

Great series!

…
Great series!

This is the first time I’ve heard only replacing the bad capacitors. Most just replace all the old C’s.

That lightbulb test in the previous lesson was excellent. Is a 60 watt bulb always correct?

Thanks much.

Comment by aliendaddy32 on April 9, 2008 @ 4:30 am

No, a 60 watt bulb …
No, a 60 watt bulb isn’t always correct. It should be about the same power as your radio uses to work properly. Go back to about 3:50 in video #2 for a way to guesstimate what bulb you need.

Comment by panstar1 on June 6, 2008 @ 6:38 pm

you don’t want to …
you don’t want to brake any of those tubes ,the
last time I seen them for sale they were $50 and up they were brand new ,it is funny tubes back in the 50’s were just a few cents now they are 50 and up ! but I too love those tube radios I was even lucky enough to come across a marcony service manual too bad I don’t have any radios to really put it to use !!

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