Emerson tv but what model is it.philco picure tube in it

[fumplet]

Testing the picture tube as a 10 bp4 assuming it is a 10bp4 but not sure of model of tv. It has a philco picture tube that I thought was dead no filament light but as I fiddled with the tube socket pins it came on after a good while of me spraying deoxit on pins. Good cutoff and emissions so 50 bucks was worth it. Does say emerson on the chassis sticker and has a few emerson tubes in it so been searching to find one that looks like it so far no go. Allll i seem to find is the emerson 639

[bandersen]

Looks like a 571

[bandersen]

Here's mine. Just restored another for a client. Weird design but they work really well.

[fumplet]

is there supposed to be a cover on top of the high voltage cage? Mine doesnt have a top to it.
Also I noticed that when I measured the filament voltage on the philco picture tube in it, my sencore cr 70 has the red mark for the proper filament voltage of Im guessing 6.3 volts (a/c normally in the set , Not d.c. voltage) I measure 6.14 volts the sencore is supplying so I cranked up the measured with dmm voltage to acutall 6.3 volts although d.c. volts. Is my tester a little low on volts or is it because the measurement is correct because a/c volts is slightly lower for a d.c. equivalent voltage?

[fumplet]

already seeing the weird design, theres two can ohm resistors on the high voltage cage along with the big horizontal linearity resistor on the inside. Also the 10bp4 tube has a strange dual ion trap magnet which I assume is still a dual trap one.
Now I really get why you call the circuit design weird. Somebody loved rectifiers a lot. Question is: when one of the 25z5 or was it 6 went out, did that make the other 2 tubes work harder and burn out?
[img]http://www.videokarma.org/attachment.php?
attachmentid=206870&d=1726666420[/img]

[bandersen]

Here's a recent video series I made while restoring one. Emerson 571 restorations: https://www.youtube.com/playlist?lis...GgvlCTnETIpOJK

6.3 volts RMS or 6.3 volts DC. It's not critical. +/- 10% is fine. Don't expect your Sencore analog meter to be perfect unless you've recently calibrated it

[fumplet]

Thats the thing id like to open my sencore tester up to see what needs refreshing and or calibrating but i dont even see how it comes apart

[fumplet]

Oh ok i see the hv cover in your video oh welll mines missing