Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Mar 30, 2023 20:00:07 GMT -5
Hello all. I'm hoping to get some help with an old tube radio... a Zenith No. 2-103 AM radio . So far, looking online for a service manual has only returned results for a few sites that charge for them. Initially, I was looking for a mIRC-style chatroom, but I'm not even sure those style of chatrooms are still used. So far, I knowo the power cord is good (continuity test), and the tubes are seated fine, and there is nothing obviously fried on the underside, and no visually loose solder joints; the symptom is when plugged in, no lights (on the front panel) come on, none of the tubes glow, and no sound at all from speaker. The radio belongs to my bosses girlfriend, and I know my way around computers and electronics and such, but little experience with fixing tube radios. I'm hoping to find a service manual or at least where to test for whatever that might help diagnose the issue. The pictures of it are located at: My Google Drive Tube folderAny help would be appreciated
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Mar 30, 2023 20:48:34 GMT -5
Okay... with the front of the radio racing away from me, which puts the tuning capacitor on my left, starting towards the left front then going to the tube closest to me on the left (and continuing across it like that), these are the tube numbers: 1407 below that it says E2B (Delco), next is 1407 (could be 14C7) (zenith), next is the speaker magnet with a transformer on top, below that is a grey box 95 960ET 455 KC 244 614, right of speaker is 12SQ7 GT (hytron 6-52), below that 14A7 17B (no maker name), another grey box B-95 95(might be 0 or 8) 455 KC 244 634, 35L6 GT (raytron), next to that row it starts with a black cardboard (?) tube marked Zenith 22-1519F, and finally an RCA tube marked only KV.
Hope that helps some.
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Mar 30, 2023 22:23:28 GMT -5
Slight update: after some digging around (the key was to search for a Zenith 'boomerang dial' on Google, and I ended up finding pics of the same model, and got a model number (wonder where they found it on this thing) of 6D029. Found a schematic, and it seems right, but nothing about troubleshooting it or an actual service manual. ((Edit to add: would never think a model number would just be stamped in a random location on the backplate, and on the antenna... I wish I had money to get into old radios in a big way))
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Apr 1, 2023 1:28:57 GMT -5
Slight update: after some digging around (the key was to search for a Zenith 'boomerang dial' on Google, and I ended up finding pics of the same model, and got a model number of 6D029. Found a schematic, and it seems right, but nothing about troubleshooting it beyond some mention of "indicated test points" or an actual service manual. I printed off a 2x2 copy of that one and another I found... I'm not sure where to begin... the schematic says to test between the common return and various points (among the tube pins and a few other points (it says "points indicated", though nothing really jumps out at me), but I don't want to just jump in blind, and there's no point trying to measure voltage if there's no power going through the system. Any thoughts? (if anyone sees this)
|
|
air1
Ratchet Jaw
Posts: 70
|
Post by air1 on Apr 1, 2023 8:45:11 GMT -5
This site is mostly for CB equipment. You may get help at the "Antique Radios Forum" or one of the many Facebook groups that are for antique radios.
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Apr 29, 2023 14:28:30 GMT -5
Thanks. I moved out of there... hostile work environment and the housing situation was getting hairy, so I left. Left the radio like it was in the pics, it's someone else's project now.
|
|