Yoke G07 vs WG K4900

Bee423

Well-known member

Donor 2020
Joined
May 23, 2020
Messages
1,577
Reaction score
552
Location
Church Hill, Tennessee
Is a yoke that works on a WG K4900 compatible with a G07 chassis? I measured the ohms and it seems reasonable (H: 2.2 / V: 56.9).
 
Thanks guys, so how can you tell a yoke is compatible with a chassis? I had always thought it was the pin out and the ohms.
Just trying to learn, I have several monitors (most with burnt tubes) but I think I could swap a few here and there to get a few nice ones up and running.
 
Thanks guys, so how can you tell a yoke is compatible with a chassis? I had always thought it was the pin out and the ohms.
Just trying to learn, I have several monitors (most with burnt tubes) but I think I could swap a few here and there to get a few nice ones up and running.
Generally speaking, by measuring the Ohms you will get an idea of whether it will work or not [as a "drop-in replacement"]. Otherwise you need to make sure the Neck pins are the same for each tube and then swap out the yoke [convergence work will need to be done to get it to look right]. I've compiled a list of Yoke readings I've encountered for tube swaps. I've done a couple videos on this documenting the process (Ohm list below is listed in the descriptions as well).

Monitor 19" tube yoke ohm list:
- G07 - H: 2.2 OHMS V: 52.8 OHMS CR-23
- K4900 - H: 2.8 OHMS V: 37.2 OHMS CR-23
- K4600 - H: 2.8 OHMS V: 8.4 OHMS CR-23
- 20EZ - H: 2.2 OHMS V: 28.1 OHMS CR-23 *(2.5 ohms and 52.2 ohms could work)
- K7000 - H: 3.4 OHMS V: 15.0 OHMS (max) CR-31
- VisionPro MTG-1901CN - H: 2.0 OHMS V: 14.2 OHMS CR-23
- Kortek KT-1420A - H: 2.9 OHMS V: 48.1 OHMS CR-31


Del
 
I'm going to respectgully disagree with the discussion here saying it cannot be done. A local collector has swapped the tube and yoke between these two monitors multiple times. The requirement is to snap the yoke connector in half, so it's installed correctly.

Scott C.
 
Last edited:
Thanks for all the info! It's a shame the tube swap isn't an option, maybe I will run across a nicer tube at some point.
 
Just curious, if a chassis is paired with a yoke that is not compatible....does it result in just a bad image or does it damage the chassis?
 
Thanks, I really appreciate that. I believe I have both but I have an oddball chassis that I'm not sure about. Just wish there was a better way to tell if a yoke/chassis is a match
 
Here it is, if you cannot tell much about it I can take a few more.
 

Attachments

  • IMG_3726 (2).jpeg
    IMG_3726 (2).jpeg
    496.3 KB · Views: 16
Just curious, if a chassis is paired with a yoke that is not compatible....does it result in just a bad image or does it damage the chassis?
From what I understand, if it's close you may just have an image that is too small/big etc. However, it's WAY off, it could damage the deflection circuit and/or put strain on the chassis for sure.

Del
 
Last edited:
Back
Top Bottom