|
#1
|
||||
|
||||
WTB: 1964 Zenith cloverleaf roundie convergence coils
Hope I didn't miss the right place to post.
Anyone familiar with the early Zenith roundies will recognize the reason for this want ad - the convergence magnet assembly "cloverleaf" on my '64 "coffin" combo is really brittle - cracked in two places and held together with tape and tie wraps. Any more age and stress and it probably is gone forever. Afraid to tighten it down at this point. Actually I have another one in a restorable set that is just as bad, but would settle for one not so bad for now. So, looking for one in better shape to buy. Any parts out there? While we're on the subject, looking at these things makes me wonder if a 3-D printed replacement is feasible. Last edited by old_tv_nut; 08-31-2015 at 08:49 PM. Reason: fix title |
#2
|
||||
|
||||
Quote:
I'm gonna ask - and no, I have no Zenith cloverleaf, or knowledge of where to find one.
__________________
Brian USN RET (Avionics / Cal) CET- Consumer Repair and Avionics ('88) "Capacitor Cosmetologist since '79" When fuses go to work, they quit! |
#3
|
||||
|
||||
Quote:
A few of us were thinking about reproducing this and many other parts like RCA yoke covers with a 3D printer
__________________
"When resistors increase in value, they're worthless" -Dave G |
#4
|
|||
|
|||
Quote:
Just the magnet assembly, not the convergence control panel. The magnet coils must be about the same or close. IIRC, I have two of the last Zenith roundies and they have the same style coils as Magnavox and others. You know, the ones with the color-coded coils. The replacements, I bought ages ago, were made of a different color plastic. The Zenith distributor in Milwaukee, had just about everything you ever needed for the repair of Zenith products. |
#5
|
||||
|
||||
Quote:
|
Audiokarma |
#6
|
||||
|
||||
Question: I always hear about these things breaking apart on people, is it not possible to use the assembly off an RCA or other set? None of the ones on any of my sets are breaking down, seems like a more permanent fix is in order.
__________________
Evolution... |
#7
|
||||
|
||||
Quote:
Doug may have one in the RGB style, seen in his video for his 25MC30 set: https://www.youtube.com/watch?v=Mo8n3jLoM_U At 1:46 in Doug's video you see the RGB Convergence Assembly, what Zenith used in later years, when they abandoned the white cloverleaf and coils. Interchangeability is assured if the plugs on the assemblies are the same - the chassis are wired alike (per Telematic jig lit). I don't have one, but do have a line on a Zenith roundie combo of undetermined vintage - it's an estate sale regret a buddy purchased and stored in his uncles place. That's my only dog in this hunt. Cheers,
__________________
Brian USN RET (Avionics / Cal) CET- Consumer Repair and Avionics ('88) "Capacitor Cosmetologist since '79" When fuses go to work, they quit! |
#8
|
||||
|
||||
I don't know if different makers had different coils / inductances driven to different currents with different driving voltages. Eventually, the magnetic fields in the tube should be the same, but you might get the fields with lower current / more turns or higher current / fewer turns.
|
#9
|
|||
|
|||
I found 2 from Moyer last month
|
#10
|
||||
|
||||
what search terms do you use?
|
Audiokarma |
#11
|
|||
|
|||
Moyer electronics in P.A. They have 3 stores ask for Bill he knows his old tvs
|
#12
|
||||
|
||||
Quote:
Currently in the throes of closing on a house, haven't had time to even touch the set since Doug was here to plug it all back together. |
#13
|
||||
|
||||
Wayne,
I have a NOS cloverleaf I'm saving for that "yet to find Zenith". You are more than welcome to use it as a model for making reproductions. PM me if interested. Phil |
#14
|
|||
|
|||
What color is it? IIRC, the replacements were a different color than the originals.
|
#15
|
||||
|
||||
Nope, same color.
|
Audiokarma |
Thread Tools | |
Display Modes | |
|
|